What are X spec lacrosse heads. How do they differ from other types. Are X spec lacrosse heads legal for high school and college play. What are the key features of the Warrior Blade OG X lacrosse head. How do stick regulations impact player performance and equipment choices.
Understanding X Spec Lacrosse Heads
X spec lacrosse heads have become increasingly popular among players at various levels of the sport. But what exactly are they? X spec heads, also known as collegiate spec heads, are designed to meet the regulations set by the NCAA for college-level play. These heads are typically wider than their high school counterparts, offering a different feel and performance on the field.
The introduction of X spec heads came as a result of a significant rule change in the 2009/2010 season, which required all college players to use wider heads. This shift had a profound impact on the lacrosse community, forcing manufacturers to quickly adapt and release new models to meet the updated specifications.
Key Differences Between X Spec and High School Spec Heads
- Width: X spec heads are generally wider, especially at the throat
- Face shape: Often more rounded or U-shaped
- Stringing patterns: May require different techniques to achieve desired pocket characteristics
- Legal status: Approved for both college and high school play
The Warrior Blade OG X Lacrosse Head
Among the various X spec lacrosse heads available, the Warrior Blade OG X stands out as a popular choice. This head combines the classic design of the original Blade with modern features to meet current regulations and player demands.
Notable Features of the Warrior Blade OG X
- X spec dimensions for collegiate-level play
- Maintains the iconic Blade face shape
- Improved scoop design for ground ball pickup
- Reinforced sidewalls for increased durability
- Multiple stringing holes for versatile pocket options
The Warrior Blade OG X offers players a blend of nostalgia and modern performance, making it a compelling option for those seeking an X spec head.
Lacrosse Stick Legality and Regulations
Understanding the legality of your lacrosse stick is crucial for players at all levels. Stick checks are a regular part of the game, typically performed twice per match in high school competitions. But what exactly are officials looking for during these checks?
Key Aspects of Stick Legality
- Head dimensions
- Pocket depth
- Shooting string configuration
- Ball retention (hold)
Let’s delve deeper into each of these aspects to ensure your stick meets the required standards.
Head Dimensions and Specifications
The dimensions of a lacrosse head are critical for determining its legality. Both X spec and U spec heads are designed to meet these requirements, making them suitable for high school and college play. But what are the specific measurements officials are looking for?
While the exact measurements can vary slightly between different levels of play, the general guidelines ensure that the head is neither too narrow nor too wide. This helps maintain fairness and consistency across the sport.
Pocket Depth Regulations
The depth of the pocket is another crucial factor in stick legality. How is pocket depth measured during a stick check? Officials use a simple yet effective method:
- The stick is held horizontally
- A ball is dropped into the pocket
- The top of the ball must not be visible when looking directly under the sidewall
This ensures that the pocket is not too deep, which could provide an unfair advantage in ball control and retention.
Shooting String Configurations
Recent rule changes have impacted the allowable shooting string configurations on lacrosse heads. What are these changes, and how do they affect players?
The most significant change was the banning of the “U” string design pattern. This alteration aimed to reduce the excessive hold and whip that some players were achieving with their stick setups. Players and stringers have had to adapt their techniques to comply with these new regulations while still achieving desirable pocket characteristics.
Legal Shooting String Setups
- Straight across patterns
- V-shaped configurations
- Limited number of shooting strings (typically 2-3)
- Proper spacing between strings
Ball Retention and Hold Tests
The “hold” of a lacrosse stick is a critical factor in its legality and performance. But how do officials test for proper hold during a stick check?
The hold test is designed to ensure that the pocket doesn’t retain the ball excessively, which could provide an unfair advantage. Here’s how it’s conducted:
- The player holds the stick horizontally, gripping the butt end
- A ball is placed in the pocket
- The stick is slowly rotated towards a vertical position
- The ball must fall out before the stick reaches vertical
If the ball remains in the pocket when the stick is vertical or beyond 90 degrees, the stick is deemed to have too much hold and is illegal.
The Impact of Regulations on Player Performance
How do these stick regulations affect player performance and equipment choices? The rules surrounding lacrosse sticks aim to create a level playing field and promote skill over equipment advantages. However, they also influence how players approach their stick setups and on-field techniques.
Adaptation and Innovation
As regulations evolve, players and equipment manufacturers must adapt. This has led to innovations in head design and stringing techniques. Players often experiment with different setups to find the perfect balance between legality and performance.
Some key areas where regulations have driven innovation include:
- Head shapes optimized for both control and quick release
- New stringing materials and patterns
- Pocket designs that maximize hold while remaining legal
- Shaft technologies that complement head performance
Transitioning from High School to College Play
For high school players aspiring to compete at the collegiate level, understanding and adapting to X spec heads can be crucial. How can players prepare for this transition?
Many high school players, especially those in upper grades, are proactively switching to X spec heads. This strategy allows them to acclimate to the feel and performance characteristics of collegiate-legal equipment before reaching the next level of competition.
Benefits of Early Adoption
- Familiarity with wider head shape
- Experience with different stringing techniques
- Adjustment to altered throwing and catching dynamics
- Confidence in using regulation equipment
By making the switch early, players can focus on skill development rather than equipment adjustment when they reach college level play.
Popular X Spec Lacrosse Heads
For players looking to make the switch to X spec heads, there are numerous options available. What are some of the most popular choices among collegiate and advanced high school players?
Several manufacturers offer high-quality X spec heads designed for various playing styles and positions. Some standout models include:
- STX Stallion U500
- Maverik Optik U
- Warrior Rabil 2X
- Nike Lakota U
- Brine RP3 X
These heads are particularly well-suited for offensive players, offering a balance of control, accuracy, and quick release. Many of these models also have high school legal versions, allowing players to maintain consistency in their equipment as they progress.
Choosing the Right X Spec Head
When selecting an X spec head, players should consider several factors:
- Playing position and style
- Personal preference for face shape and width
- Stringing options and pocket preferences
- Durability and material quality
- Brand reputation and player reviews
It’s often beneficial to test different heads, if possible, before making a final decision. Many players find that the transition to X spec heads requires some adjustment in their playing style and stick handling techniques.
The Future of Lacrosse Head Regulations
As the sport of lacrosse continues to evolve, so too may the regulations surrounding equipment. What potential changes might we see in the future regarding lacrosse heads?
While it’s impossible to predict with certainty, some speculate that high school regulations may eventually align more closely with collegiate standards. This could potentially lead to the phasing out of current high school spec heads in favor of universal X spec requirements.
Potential Implications of Regulation Changes
- Equipment manufacturers adapting product lines
- Retailers adjusting inventory and sales strategies
- Players at all levels needing to update their equipment
- Changes in playing styles and techniques across age groups
While such a dramatic shift has not occurred, the trend towards X spec heads among serious high school players suggests a gradual movement in this direction.
Stringing Techniques for X Spec Heads
One of the most significant challenges players face when transitioning to X spec heads is adapting their stringing techniques. How do stringing methods differ between high school and X spec heads?
The wider shape of X spec heads often requires different stringing patterns to achieve similar pocket characteristics. Stringers and players have had to innovate and experiment to find effective solutions.
Key Considerations for Stringing X Spec Heads
- Adjusting the number and placement of sidewall strings
- Modifying knot placement to control pocket depth and shape
- Experimenting with different mesh types and tensions
- Balancing hold and release to meet regulations and performance needs
Many players find that achieving their ideal pocket in an X spec head requires some trial and error. It’s often helpful to consult with experienced stringers or watch tutorials specific to X spec heads when first making the transition.
Performance Comparison: X Spec vs. High School Spec Heads
A common question among players transitioning to X spec heads is how they compare in performance to high school spec models. Are there significant differences in play, and can players achieve similar results with both types?
While the wider shape of X spec heads can initially feel different, many players find that with proper stringing and practice, they can achieve comparable or even improved performance. The key lies in understanding how to work with the head’s characteristics rather than against them.
Potential Advantages of X Spec Heads
- Larger catching surface area
- Potentially more consistent release point
- Greater versatility in pocket placement
- Improved ball retention during checks (within legal limits)
Ultimately, the performance of any lacrosse head depends on a combination of factors, including player skill, stringing quality, and individual preference. Many top players demonstrate that exceptional performance is possible with both X spec and high school spec heads.
Maintenance and Care for X Spec Lacrosse Heads
Proper maintenance of your X spec lacrosse head is crucial for ensuring consistent performance and longevity. How can players best care for their equipment?
X spec heads, like all lacrosse equipment, require regular attention to maintain their shape, stringing integrity, and overall condition. Here are some key maintenance tips:
- Regularly check and tighten screws connecting the head to the shaft
- Inspect sidewall strings and shooting strings for wear or loosening
- Clean the head and mesh after use, especially in muddy or wet conditions
- Store the stick properly to maintain head shape (avoid extreme temperatures)
- Periodically re-string or adjust the pocket to maintain optimal performance
By following these maintenance practices, players can ensure their X spec heads remain game-ready and continue to perform at their best.
When to Replace Your X Spec Head
Even with proper care, lacrosse heads eventually wear out or become damaged. Signs that it may be time to replace your X spec head include:
- Visible cracks or stress marks in the plastic
- Significant warping or loss of original shape
- Inability to maintain a legal pocket
- Decreased performance despite proper stringing and maintenance
Investing in a new head when necessary can help maintain optimal performance and ensure compliance with regulations.
Is My Lacrosse Stick Legal?
We’re going to keep this short but if you want more information you can check out the website cited at the bottom of this post.
In high school a stick check is usually performed twice per game. And, as the name suggests the officials are checking your stick to ensure it is “legal.” So what are they looking at?
The crosse: There are specific measurements that must be met regarding the size of the head. We won’t bore you with the details, but as long as your head is “X” spec or “U” spec you will be fine. (All heads for sale by Rocket Sports meet these requirements and therefore are legal for both high school and college play).
The pocket: When the official lifts the stick horizontally he will drop a ball in the pocket. The top of the ball must not be visible when looking directly under the sidewall. In other words the pocket should be shallow enough so that the top of the ball is covered by the sidewall and you should not be able to see the inside of the opposite sidewall.
The shooting strings: Recently, regulations were changed to ban the “U” string design pattern on lacrosse heads so ensure you have removed that configuration from your setup.
Hold: To check for “hold” hold your stick out horizontally with one hand holding on to the butt end of the stick. Drop a ball in the pocket. Slowly rotate the stick 90 degrees so the head is getting closer to the ground. The ball must fall out of the stick before the stick is vertical. If the ball stays in the pocket when the stick is vertical or even past the 90 degrees the stick has too much hold and this gives you an unfair advantage.
All stick violations will result in a non-releasable penalty ranging from 1-3 minutes.
The head coach has the power to request a stick check on a specific player on the opposing team.
Citation: Hite, Greg. “Good, Close or Dang! How to Conduct a Stick Check.” Georgia Lacrosse Officials Association, 1 June 2019, galaxref.
com/conducting-a-stick-check/
High School and College Heads
Back in the 2009/2010 season there was a MAJOR rule change that affected College Lacrosse across the board. All players were now required to use a new, wider shaped head making all of the previous models illegal to use for any NCAA game.
Since we have all come to be used to this now it doesn’t seem like that big of a deal, but back then it had everyone’s head spinning. Luckily manufacturers acted quickly and released college legal versions of heads so that players would be able to gear up in time for the season. Back then that switch wasn’t as easy as you might think. Stringers had to adjust to learn how to get the same pocket results but with much wider heads.
Now that some of these college rules are starting to trickle down into the younger play levels, a question popped into our heads here at Universal Lacrosse.
What would happen if all High School spec heads became outlawed in lacrosse? What if regardless of age, whether you’re a young gun or a rising vet, you just couldn’t use any of the HS heads?
At first I think this would cause a serious uproar in the lax community.
People would freak out! The manufacturers would basically have to stop any future production of these heads and any retailers would probably be out of luck with their current stock. As for the players themselves, every one of them would have to go out and buy a new head just be able to step on the field, no matter the age group or division.
Even though this hasn’t happened yet we are already seeing a trend in the older High School players. A good amount of them have already made the switch to Collegiate legal heads in order to get used to the feel of them and to prepare to make the next step into Collegiate level play.
I’m 150% behind this idea! If you are serious about making the next progression into College lacrosse why wouldn’t you want to get ready for it in any way possible, including the equipment you use! Trust me, it will make your transition that much easier.
Some of our favorite College level heads are: STX Stallion U500, Maverik Optik U, Warrior Rabil 2X, Nike Lakota U, and the Brine RP3 X.
These heads are all perfect for an offensive player and they also have a HS version as well!
Now a big question with High School (HS) or Collegiate (X/U) heads is how it affects your performance. I’ve always believed that no matter what kind of head you use, you can get any kind of pocket you want. It doesn’t matter if it’s extremely wide or pinched, you can still produce the same results. It all comes down to stringing the head. You can’t usually use the same patterns on a College level head that you would use on a HS one. They are just too wide to get the same affect. You most definitely can get the same results but you just need to change things up!
We don’t know if HS heads will ever become illegal, but either way don’t worry to much because as long as you get ahead of the game you’ll be just fine.
IT’S ALL U
X Spec Unstrung Lacrosse Head Brine King Lacrosse Player Equipment newsmada.com
Par Taratra sur 10/08/2021
Nalai-nisaraka… Adiny efatra tsy niato ny fampisehoana nataon’ny tarika Ny Ainga, izay « Ivon’ny fankalazana ny 25 taona milay »…
Par Les Nouvelles sur 10/08/2021
Lancé sur les réseaux sociaux depuis le mois de juin, le concours musical «Talenta Contest» d’Airtel Madagascar propulse…
Par Les Nouvelles sur 10/08/2021
Initialement prévu au mois de mars, le concert de Lucas Ravoson se jouera finalement à guichet fermé ce…
Par Les Nouvelles sur 10/08/2021
Maromaitso et Veloary signent une installation collective baptisée «Les descendants de Rapeto et Rasoalao», à découvrir à La…
Par Les Nouvelles sur 10/08/2021
L’Alliance française d’Antananarivo (AFT) est actuellement en pleine préparation de la 26e édition du Salon des jeux de…
Par Taratra sur 09/08/2021
Fitoriana ny filazantsara an-kira “Fiderana sy fiankohofana” ary fitsofan-drano ho an’ireo mpanala fanadinana Bacc … Nitondra ny sanganasany…
Par Taratra sur 09/08/2021
Nanomboka ny taona 2020, nianjadian’ny tsy fanjarian-tsakafo mahery vaika ny faritra atsimon’i Madagasikara.
Nanapa-kevitra ny Bloco Malagasy fa…
Par Les Nouvelles sur 09/08/2021
Samedi, le comité d’organisation du concours 7 jours pour un film a dévoilé la liste des scénaristes finalistes…
Par Les Nouvelles sur 09/08/2021
La Fondation H à Paris abritera, du 16 septembre au 20 novembre, une exposition baptisée «Lo Sa La…
Par Les Nouvelles sur 09/08/2021
Deux candidates se sont singularisées lors de la grande finale de la 29e édition de l’événement «Japanese speech…
Par Les Nouvelles sur 09/08/2021
Initialement prévue se tenir dans la capitale du Vakinankaratra, la 15e édition de la Semaine du Kabary a…
Par Taratra sur 07/08/2021
Fantatra, omaly fa hotanterahina eny amin’ny Alliance Française Andavamamba, ny 11 aogositra ka hatramin’ny 21 aogositra izao ny…
Brine Houdini Strung Lacrosse Head Royal X-Spec Lacrosse smbs-group Team Sports
Brine Houdini Strung Lacrosse Head Royal X-Spec
Brine Houdini Strung Lacrosse Head, White, X-Spec, Heads – Canada.
Brine Houdini Strung Lacrosse Head, White, X-Spec in Heads.. Pro-Pinch combined with TruOffset provides superior ball control and increased accuracy on hard shots 。 Quad-Cross sidewall design makes for the ultimate balance between lightweight and stiffness 。 Injection molded with a permanent matte finish 。 Scoop designed specially for catching quick passes and easy ground-ball pickups 。 For Decades, has been creating the best lacrosse heads in the world. Every Head is different and every feature is tailored to support specific needs. Power, accuracy, control, stiffness, durability – no matter what your gane requires, is dedicated to finding the right head to suit the position and playing style of every lacrosse player out there. Reign On. Houdini Head Series: Dodge and escape double and triple teams for game winning goals. 。 。 。
Brine Houdini Strung Lacrosse Head Royal X-Spec
Nets #7#11 2021 Season New Jersey Sweatshirt XGMJ Durant Irving Mens Basketball Jersey Breathable Sport Vest Top Fashion Sleeveless Shirt Black 11-S.
STX Lacrosse 4Sight Focus Ti Lacrosse Goggles. Teenitor® 12 rung Agility Ladder Speed ladder Training ladder for Soccer Football Fitness Feet Training with Teenitor® Carry Bag Speed. Junior Size Brown Tachikara SGB5R Rubber Basketball. Real Carbon Thumb Attack Middie Defensemen Epoch Lacrosse Integra High Perfomance Lacrosse Gloves Phase Change Technology, Plantar Fasciitis Foot Sleeves Graduated Compression Heel Arch Ankle Sleeves Socks Brace Plantar Sock for Men and Women Reduce Ankle Swelling Ankle Spur Blood Circulation, Over The Door Mini Basketball Hoop and Ball Wall Mount Basketball Hoop Basketball Backboard Hoop Kit for Kids Boys Mini Basketball Hoop, Naturalizer Womens Jaque Fashion Sneaker, X-large Champion Sports mens 13-15 Rhino All Sport Athletic Socks, Heavy Duty Basketball Goal Net Red White Blue Basketball Net Mesh Professional Basketball Hoop Net for Standard Size Indoor or Outdoor Hoop Rims 12 Loops 4 PCS Basketball Net, SPORTLAUKEXIN Custom Personalized Your Soccer Jerseys & Shorts,Custom Any Name Number Team Sports Training Uniforms, 0.
75 kg to 2.00 kg Nelco Lo Spin Competition Discus.
Brine Houdini Strung Lacrosse Head Royal X-Spec
Free one year warranty and easy 30-day return policy. Creative design: Amazing keychain 3 stripes for aviation lovers. Set includes hard plastic storage case with marked sizes and fits easily in your toolbox or work bag. All banners include metal grommets in each corner for easy hanging, Parcentered and parfocal objectives ensure that the image stays centered and focused when the magnification is changed. wearing arm sleeves is one of the most effective to protect them, With strong stretchy elastic to ensure a comfortable fitElastic waist, Brine Houdini Strung Lacrosse Head Royal X-Spec, Blodgett 39120 Heatsink Assembly: Industrial & Scientific, cushioned eva and rubber outsole, Deeper wire for greater coverage and support. These are simply beautiful and unique earrings that are incredibly eye catching and very well made, This soft wool cardigan will be perfect with jeans.
• 5 in x 7 in Invitation with Envelope, Brine Houdini Strung Lacrosse Head Royal X-Spec. Wraps around Invitation Package. When deciding the size bracelet you need. *****PLEASE READ CAREFULLY BEFORE PLACING YOUR ORDER, Locket and chain color black origami rabbit, Refunds will be issued to the credit card or PayPal account used to make the purchase. Good performance on removing bearing and stable property. Brine Houdini Strung Lacrosse Head Royal X-Spec, x2 Both (2) Brand New Front Stabilizer Sway Bar End Link – Driver and Passenger Side – K5255. It Is Exclusive To Our Amazon Shop Only. Senior (6 7/8 – 7 5/8) junior (6 3/8 – 7 1/8), The lamp provides 190 watts of power and an average life of 3500-5000 hours. This is the perfect addition to your closet, Custom Project: Car & Motorbike. Brine Houdini Strung Lacrosse Head Royal X-Spec. Machine Washing is Not Recommended, Pink CZ Elephant Earrings for Kids.
Rules & Requirements « Rough Riders Lax
Rough Rider Lacrosse | Rules & Requirement Guidelines
Heat Alert Policy
Each school district is responsible for monitoring the T.
H.I. (Temperature Humidity Index) and establishing their own guidelines for practices.
Thunder and Lightning Policy
If thunder or lightning is observed, all outdoor activities will be suspended immediately. Shelter should be sought in appropriate locations. Before resuming activities coaches must wait a minimum of thirty (30) minutes after the last observable lightning strike or thunder heard.
Click here to view the 2014 PAL rules
NCAA 2010 Lacrosse Head Specifications
On January 1, 2010, a new rule which applies to lacrosse head dimensions will go into effect for all men’s games officiated under NCAA rules. The rule affects NCAA Varsity, MCLA teams and select high-school teams.
In games where NCAA rules are in effect, such as NFHS (high-school) and youth lacrosse, the new head dimensions are NOT required, and heads currently on the market are legal for play.
In some parts of the country where high schools follow NCAA rules, teams will be required to adhere to these new head specifications.
To find out which head specs you will be required to follow in 2010, you should contact your coach, local official or you local US Lacrosse representative. Visit insidelacrosse.com for a downloadable spec sheet that details the new rule dimensions.
Starting this summer, Warrior and Brine will be manufacturing three distinct series of lacrosse heads: Traditional Spec, X-Spec and X6 Spec.
- ) Traditional spec heads are legal for NFHS (high school) and youth lacrosse.
- ) X specs are universal, meaning they are legal for play at all levels of lacrosse (NCAA/High School/Youth). These heads meet both the NCAA 2010 and the current NFHS width measurements.
- ) X6 spec heads are legal under NCAA rules only. These heads meet the minimum width measurements allowed by the NCAA, and are not legal under NFHS and youth lacrosse rules.
Sample of Warrior & Brine Head Offerings Equipment
- Helmet: A lacrosse helmet must be worn, not substitutions allowed.
- Mouth Guard (mouthpiece): A mouth guard protects your teeth but more importantly helps in the prevention of concussions.
- Shoulder pads: Lacrosse shoulder pads are very similar to hockey shoulder pads. It is important that the shoulder pads cover the sternum, clavicle, and shoulders properly.
- Rib Pads: Rib pads are not mandatory in lacrosse but are highly recommended at the youth level.
- Elbow Pads (arm pads): Lacrosse elbow pads are similar to hockey arm pads and should cover directly below the side deltoid all the way to the middle of the forearm. Good elbow pads have a hard shell directly over the elbow for added protection.
- Gloves: Lacrosse gloves are also similar to hockey gloves. The cuffs of the gloves should cover the wrist area and reach the bottom part of the elbow pads. The palm side of the glove is usually made of leather and has ventilated areas to give the player a more tactile sense when holding the lacrosse stick.
- Athletic Supporter and Cup: The athletic supporter should fit snugly around the waist and the cup should cover the entire genital region.
- Cleats: Cleats give you more traction on grass and dirt. Although they make lacrosse cleats, football and soccer cleats are okay to use as well.
- Goalie Stick: A goalie stick resembles a large fishing net. A goalie stick is much larger than an attack/midfield stick or defense stick.
- 3rd – 6th Grade – Midfield/Attack Stick: A midfield/attack stick can be 35″ to 42″ in length.
- 3rd – 6th Grade – Defense Stick: A defense stick can be 52″ to 60″ in length. The advantage of a defense stick is its reach. Only 4 defense sticks per team may be on the field at one time.
- 7th – 8th Grade – Midfield/Attack Stick: A midfield/attack stick can be 40″ to 42″ in length.
- 7th – 8th Grade – Defense Stick: A defense stick can be 52″ to 72″ in length. The advantage of a defense stick is its reach. Only 4 defense sticks per team may be on the field at one time.
The cuffs of the gloves should cover the wrist area and reach the bottom part of the elbow pads. The palm side of the glove is usually made of leather and has ventilated areas to give the player a more tactile sense when holding the lacrosse stick.
The advantage of a defense stick is its reach. Only 4 defense sticks per team may be on the field at one time.X Spec Unstrung Lacrosse Head Brine Clutch IV Player Equipment Sports & Outdoors kmotors.co.th
: Brine Clutch IV – X Spec Unstrung Lacrosse Head, Royal Blue : Sports & Outdoors. : Brine Clutch IV – X Spec Unstrung Lacrosse Head, Royal Blue : Sports & Outdoors. Patented vari-flex technology: stiffer materials Inserted into strategic sections of the head Control flex to Adapt to multiple playing styles and conditions 。 Vari-flex core helps the head maintain stiffness in hotter weather conditions 。 Strategic core-tech eliminates Excess weight and adds stiffness to strategic areas of the head for more accuracy and Control 。
X Spec Unstrung Lacrosse Head Brine Clutch IV
Womens High Waist Gym Sport Seamless Leggings Yoga Pants.
Bike Helmet for 8-13 Years Old SKL Kids Skateboard Helmet Impact Resistance Lightweight Helmet for Skating Cycling Scooter Skateboarding Inline Skating Longboard Boys Girls Adjustable Helmet, Bell Lightup Key Cable Lock Level 3, NCAA California Golden Bears Midcap High Performance Beanie White. 2 Liter Water Reservoir JanSport Fashion Hydration Pack, Cardinal Medium Image One NCAA Arkansas Razorbacks Womens Basic Short Sleeve T-Shirt Girls Gameday Bow, Waterproof Shoe Cover Silicone Water-resistan Unisex Shoes Protectors Rain Boots Overshoes Large, Blue. Large Ita-med Cc-265 Rigid Plastic Cervical Collar with Chin Support, A-Team Apparel Green Bay Packers Girls Game Day SS Slouched Crossback Tee, Layatone 2mm 3mm Neoprene Pants Adults Wetsuit Pants Men Surfing Canoeing Swimming Scuba Diving Suit Pants Women Wet Suits Pants, DC Mens Union Action Sports Shoe. VKOTONY FC Football Club Knit Hat Team Soccer Embroidery Beanie for Football Fan, THlighting 2 Pack LED Bicycle Bike Cycling Wheel Light with USB Charging Battery Safety Light Spoke Light Lamp Lightweight Accessory Taysing.
Waterproof Replacement Dryboot for the D1 D10 Drysuits D7. Medium Olympian Blue Helly Hansen 51810 Mens Vertex Hoodie Jacket, Igloos Womens Butter-Pile Fleece Beanie. Saturnian I Fun Gripper Football 8-1/2-Foot.
Modified Drop Tower Impact Tests for American Football Helmets
Motivation
The main objective of this modified drop tower test method is to more closely represent the impact of the American football helmet system on the field of impact and to help expand safety standards. The entailed test method can provide the knowledge of systematic response helmets necessary for the effective development of a reinforced headgear to prevent concussion. The occurrence of concussions is plagued by contact sports such as American football.In the United States alone, sports-related concussions are estimated to occur 1.6 to 3.8 million times each year. 1 A soccer player can have over 1500 head impacts each season. 2, 3 While the magnitude of most exposures can be sub-Shocking, the accumulation of these exposures can lead to long-term brain damage due to exposure to an induced neurodegenerative disease known as chronic traumatic encephalopathy (CTE).
4 CTE is associated with the accumulation of tau protein in the brain, resulting in memory loss, behavior and personality changes, Parkinson’s syndrome, and speech and gait abnormalities that sometimes lead to suicide. 5 Football helmets have made several technological advances over the past 15 years, but even today the most modern helmets do not completely cushion all the falling forces on the helmet and therefore athletes still suffer concussions. A study by Barch and et al. 6 showed that in many cases supervisor exposure dose and traumatic brain injury risks, while dark vintage Leatherhead helmets were comparable to those worn widely used 21 – century helmets illustrating the need for improved development and testing standards of football helmets. In particular, the NOCSAE 7 certification does not require a large helmet to be included in a helmet drop test. The added rigidity from the tone of a large helmet attached to the helmet would drastically change the overall mechanical response.
The present study proposes a method to provide more robust helmet safety standards that will serve as a driving force to promote safer helmet design.
Background
Head Injury Metrics
The exact biological mechanisms associated with concussions remain unidentified. Although much has been done in an attempt to quantify the tolerances of head injury for various measures of injury, disagreement has arisen in the biomedical community regarding these criteria.These mechanisms of injury must relate to multiple individuals: linear acceleration, rotational acceleration, exposure duration, and impulse. 8, 9, 10, 11 Several Injury criteria were used to define contusion as a measure of linear acceleration. Wayne State Tolerance Curve (WSTC) 12, 13, 14 was designed to predict skull fracture for frontal impact car accidents by defining the threshold curve for linear acceleration versus duration of exposure.
The WSTC served as the basis for other injury criteria such as the Severity Index (SI) 11 and the Head Injury Criterion (HIC), 15 , which are the two most commonly used criteria. SI and HIC as a measure of severity impact based on weighted integrals of linear time acceleration profiles. While these criteria define threshold values for linear acceleration, other criteria have been proposed to account for rotational acceleration, such as the head impact power index. 8, 10, 16 Today’s helmet testing standards often use an injury criterion based on the Wayne State to have alerance curve (namely ICC or SI), or peak acceleration criterion, or in some cases both. While some changes are needed to add angular acceleration to the standard performance criteria, linear based acceleration criteria remain dominant.
In this study, the metrics used to assess the relative safety that each helmet provided were the apex of the resulting values for acceleration, SI, and SVD.
Of these indicators, only SI is used for evaluation in the current National Working Committee for Standards for Sports Equipment (NOCSAE) Football Helmet Standards. SI is based on the following equation,
(1)
where A is the translational acceleration of the center of gravity (CG) of the head, and T is the acceleration time. 11, 17 SI were calculated according to the standards NOCSAE 18, where the calculation is limited to 4 G thresholds according to the resulting acceleration curve.SVD values were calculated according to the following equation,
(2)
where and translational acceleration CG of the head and t 1 and t 2 represent the start and end times, respectively, of the interval at which the HIC reaches its maximum value. All values of CTG calculated in this study were MKH 36, where the duration of the time interval is limited to 36 ms.
NOCSAE Football Helmet Test Standards
NOCSAE Overview
In 1969 NOCSAE was formed to develop performance standards for American football helmets / faceguards and other sports equipment with the aim of reducing sports injuries. 1 7 The NOCSAE Football Helmet Standards were developed by Dr. Voigt Hodgson 9 Wayne State University to reduce head injuries by establishing attenuation and structural integrity requirements for football helmets / faceguards. These standards include football helmet test certification and annual recertification procedures for helmets. In 2015, NOCSAE implemented a quality assurance program requiring the use of a specific American National Standards Institute (ANSI) accredited helmet certification body.
Test Method NOCSAE
NOCSAE Football Helmet The standard does not include testing helmets with faceguards, as this requires their removal before helmet drops are carried out. NOCSAE helmet test standards 17 use a two-wire drop crusher that relies on gravity to accelerate the dummy helmet combination to the required impact speeds.
NOCSAE head model with instrumental shIth triaxial accelerometers at the center of gravity. The combination of a dummy head and helmet is then dropped at specific speeds onto a steel anvil covered with a 12.7 mm thick ebonite Modular Elastomer Programmer (MEP) pad.On impact, the instantaneous acceleration is recorded and the SI values are calculated. These SI values are compared with the pass / fail criterion for a variety of required exposure locations and speeds and temperatures, including the environment and high exposure temperatures. If the obtained SI value for any impact violates the threshold, the helmet will not pass the test.
A separate standard test method is used for the certification of the football big helmet. The NOCSAE Football Grand Slam standard includes an analysis of structural integrity, as well as an assessment of the impact of the attenuation characteristics of the big helmet and chin strap of their attachment system.Each exposure measurement must be below 1200 SI in order to pass the test, without facial contact and without intermittent failure of any component as defined by the NOCSAE standard. 19
There is a proposed optional NOCSAE (Linear Impact (LI)) test 20 , which includes a helmet with a Grand Slam, but it is not suitable for certification of a football helmet because it cannot recognize the influence of the crown. LI uses a pneumatic ram to act on the helmet, located on the NOCSAE dummy equipped with a hybrid III dummy neck mounted on a linear bearing table in order to induce angular acceleration.For this reason, the LI test is an optional test to the current two-wire NOCSAE drop test procedures and is not a replacement. 20, 21 Instead of testing LI, we suggest simply adding two more scenarios to the current two-wire drop test procedure.
The NOCSAE Standard Test Method for Certification of Football Helmets currently includes six Locations Prescribed Impact and one Random Impact Location.Prescribed exposure locations include the following: Front (F), Front Boss (FB), Side (S), Rear (R), Rear Boss (RB), and Top (T). The random exposure location test can select a region from anywhere within the helmet’s defined acceptable exposure area. Impact locations for our modified NOCSAE tower drop tests include replacing the previously identified Front and Front Boss impact locations with what has been named as Front Top (FT) and Front Top Boss impact locations (PTB).Our front-top and front Top Boss impact points are identical to the impact points and right frontal Boss of the NOCSAE standard for Lacrosse helmets, which also includes a large helmet for drop tests. 22 The helmet shell impact locations, including the replaced front and front Boss seats, are depicted in figure 1. In addition, the modified helmet test method of our present study includes two Impac Grand Slam seats, which were named FG front and FG to bottom.The two impact locations for the Grand Slam are identical to the required impact locations for the current NOCSAE Grand Slam certification procedures. The eight impact locations for the modified NOCSAE impact tests of this study are shown in Figure 2
Figure 1: Approximate impact location for football helmets. Six currently required NOCSAE impact helmet drop test seats, Front (F), Front Boss (FB), Side (S), Top (T), Rear (R), and Rear Boss (RB), plus two seats the impacts are projected, Front Top (FT) and Front Top Boss (PTB).Note: The NOCSAE Standard Test Method for Safety Helmets does not include the Front Top and Front Top Boss Impact Locations (shown in red) and for this study, they replace the Front and Front Boss Impact Locations. (Image modified from NOCSAE DOC. 001-13m15b)
Figure 2: Modified NOCSAE drop test setup , showing eight impact locations. Front Top, Front Top Boss, Side, Grand Slam (FG) Front, Back, Rear Boss, Upper and Lower Grand Slam (FB).Note: The NOCSAE standard does not include attachments and the big helmet here is the Front Top and Front Top Boss replace the standard Front and Front Boss impact spots. (Image modified from NOCSAE DOC. 002-11m12) Please click here to view a larger version of this figure.
Helmet designs have changed progressively over the past decade, while NOCSAE’s soccer helmet standards have never included a large helmet with a HELMET in evaluating the technical performance of a soccer helmet.Although, more recently, an amendment has been made to include a pass / fail value of 300 SI for low impact velocities (3.46 m / s), the total credit / fail limit of 1200 SI has not changed since 1997 17 Until 1997, NOCSAE used 1500 SI Pass / Fail criterion. Hodgson and et al. (1970) showed that SI values of over 1000 are life-threatening, while SI values of 540 produced linear skull fractures in non-cadaveric impact test helmets. 23 Most modern football helmets have shown to pass well below the 1200 SI limit, but not all below 540 SI.
Subscription Required. Please recommend JoVE to your librarian.
| Other results | ||
| We know that when black women embrace their love for their natural hair, it helps to undo generations of teaching that black in its natural state is not beautiful, or something to be hidden or covered up. | We know that when African American women are willing to accept and love their hair, it helps them forget that they have been taught for generations that their hair is naturally ugly and that it should be hidden or covered up. | |
| They are lovely little kids with curly hair and dark blue eyes. | These are lovely babies with curly hair and blue eyes. | |
| Lovely Mary Pickford and her lovely blonde hair lying in her sunken bathtub like a glorious mermaid. | Lovely Mary Pickford and her luxurious blonde hair that is sprawled around the edges of the bathtub like a mermaid. | |
| She looked across the table at the lovely face and the red-gold crown of hair, and then she gave a tiny start. | She looked at her pretty face in a halo of golden-red hair and suddenly shuddered slightly. | |
| A lovely face hovered over him, framed with flaming hair. | A beautiful face hovered above him, framed by fiery hair. | |
| The hair on his legs tickled her toes, and she loved that feeling too. | The hairs on his legs tickled her fingers, and that was wonderful too. | |
| A girl with corn-colored hair who will fall desperately in love with me. | With such golden hair, and who would fall in love with me without memory. | |
| Michelle had lovely red hair, long red hair. | Michelle had long red hair. | |
| Your dad loves my long soft hair. | Your dad always loved my long soft hair so much. | |
| Who’s in love with the girl with the pink ribbon in her hair. | Who is in love with a girl with a pink ribbon in her hair. | |
| He’s got a comb-over, so don’t mess with his hair, and I hope you brought your pom-poms because he loves himself a cheerleader. | He has a combed bald spot so don’t mess with his hair and I hope you brought your pom-poms because he loves being the cheerleader. | |
| I see you across the hall, leaning against your locker in that jacket that you love so much and the way you tuck your hair back behind your ears. | I see you in the corridor, standing near the locker in that vest that you love so much the way you pull your hair behind your ears. | |
| And as I ripped it open, my father tousled my hair and forever his love and the chocolate were tied together. | When I opened it, my father ruffled my hair, and forever his love and chocolate were intertwined. | |
| § Do you love a laddie with curly brown hair? | § Do you love a kid with curly dark hair? | |
| He loved me when I had frizzy hair, sewing like a maniac in my parents’ basement in Queens. | He loved me when I had curly hair and sewed like a maniac in my parents’ basement in Queens. | |
| She had such lovely smooth arms, a full, luxuriously tapering throat and neck; her golden-red hair floated like an aureole about her head, and her large eyes sparkled. | She had such lovely, delicate hands, such a slender and white neck; reddish-golden hair surrounded the head with a bright halo, and large eyes sparkled. | |
| I will attire my Jane in satin and lace, and she shall have roses in her hair; and I will cover the head I love best with a priceless veil. | I will dress my Jen in lace and silk and decorate her hair with roses. And I will cover the head that I love with a priceless veil. | |
| “Duddy’s got to make himself smart for his auntie,” said Aunt Petunia, smoothing Dudley’s thick blond hair. “Mummy’s bought him a lovely new bow-tie.” | Dudlik needs to dress up for aunty, Aunt Petunia purred as she smoothed Dudley’s thick blonde hair. – Mom bought him a pretty new tie. | |
| She must have heard him, but kept on working, back bent, the lovely golden hair gone to silver. | Fia must have heard footsteps, but she continued to write, bending over the table, her wonderful golden hair thickly silvered with gray. | |
| I love your mousy hair. Like a beautiful mouse. | I love your mouse-colored hair, like a beautiful mouse. | |
| I’d love to be able to tell the lady who cuts my hair that I don’t like bangs. | I would like to tell the hairdresser that I hate bangs. | |
| Oh, darling, I love you too, she said.Then, right in the same damn breath, she said, Promise me you’ll let your hair grow. | Ah, honey, I love you too! – she says and immediately adds in one breath: – Just promise that you will let your hair go. | |
| Harry couldn’t see the point of trying to make his hair lie flat. Aunt Marge loved criticizing him, so the untidier he looked, the happier she would be. | Harry couldn’t understand why. Aunt Margie loved to criticize him, so the more unkempt he looked, the better for her. | |
| Loves horses, hates poseurs, and will only date cute boys with blonde hair and great abs who are at least 6 feet tall and play either lacrosse or water polo. | Loves horses, hates poseurs and only dates cute boys with blond hair and muscular muscles who are at least 6 feet tall and also play lacrosse or water polo. | |
| It’s a ride of love, the wind ruffles your hair. | It’s a love journey, the wind blows your hair. | |
| With the sun shining on her hair, tawny as wheat, and on her gold-brown smooth-lovely face and on the curve of her throat he bent her head back and held her to him and kissed her. | The sun was shining on her hair the color of ripe wheat, on her golden-dark tender face, on the crook of her neck, and he threw back her head, pulled her to him and kissed her. | |
| Very lovely she looked, too, in her rose-chiffon draperies, with the curling gold of her hair. | In her pink chiffon clothes, with golden curls spilling over her shoulders, she looked extremely charming. | |
| I love the way your hair frames your face. | I love the way your hairstyle frames your face. | |
| Madame Walter stood motionless, gazing fixedly at the face of her lover beside the face of Christ, and had become as white as her hair. | Madame Walter, frozen in place, intensely peered at the features of her lover, then at the features of Christ.And her face became as white as her hair. | |
| He had brown eyes, like Charles’s, a firm chin, a fringe of white hair, and Tracy loved him instantly. He was the perfect grandfather for their child. | Tracey instantly fell in love with those Charles-like brown eyes, a firm chin, a crown of white hair. He was the perfect grandfather for a child. | |
| As muchas I love the speech about not needingmaterial things from a guy who hasthat much product in his hair, this party is about excess, not exposition. | No matter how much I love the talk about non-material things from a guy who has so many waste products of these non-material things in his hair, this is, after all, a party of success, not an exhibition. | |
| Crew cuts are getting corny. And your hair’s so lovely. | Now hedgehogs are going out of fashion, and you have such wonderful hair! | |
| His hair was like two black ropes, and round his arm was a lovely silver bracelet with blue stones in it. | The scary’s hair is braided like two black ropes, and on the arm is a silver bracelet with blue pebbles. | |
| And I love the way you wear your hair. | And I love the way you style your hair. | |
| Your lovely hair slips through my fingers like dry grass. | Your beautiful hair slides through my fingers like dry grass. | |
| ‘and Carl – we daren’t let him grow his hair’ cos it stands on end and makes him look like Toyah and nits love it. | and Karl – we don’t let him grow his hair, because he doesn’t stick out like the Scarecrow, and the lice adore them. | |
| Okay, here’s that lock of Bubblegum’s hair you love so much. | So. Here’s your favorite curl of Bubblegum Hair! | |
| No, but Mr Brookes from the Chronicle is very much in love with Hector’s hair. | No, but Mr. Brooks of the Chronicle is crazy about Hector’s hair. | |
| Your beautiful wife, Melody, with her beautiful hair and her lovely legs and her exquisitely proportioned… | Duroy, leaning forward as she looked out of the open window, printed a long kiss, a lover’s kiss, among the hair on her neck. | Madeleine was still looking out the open window when Duroy suddenly bent down and pressed his lips to her neck – it was a long kiss from a lover. |
| She moved well, and had lovely gleaming chestnut brown hair. | She was graceful and slender, her wonderful brown hair, shining in the sun, gave her a special charm. | |
| I love her to death, and she’s great at things like straightening her hair and dental hygiene, but this is a whole different thing. | I love her to death and she’s good at things like hair straightening or oral hygiene, but that’s something completely different. | |
| The silver hair and benevolent countenance of the aged cottager won my reverence, while the gentle manners of the girl enticed my love. | The silvery gray hair and the benevolent look of the old man aroused respect in me, and the girl’s meekness – tender love. | |
| And she’d cut all her lovely long hair off. | She cut her lovely hair. | |
| Her hair was gold and lovely; wide-set hazel eyes with upper lids that drooped made her look mysteriously sleepy. | She had wonderful golden hair and wide-set light brown eyes; the slightly closed eyelids gave her appearance a mysterious languor. | |
| So, Michael, are you saying that you would not love me … if I didn’t have a luscious, full-bodied head of hair? | Michael, will you still love me, even without a luxurious shock of beautiful hair? | |
| They were the same statues, rich in form, in attraction, and poesy, with eyes of fascination, smiles of love, and bright and flowing hair. | Those were the same statues, with curvaceous forms, voluptuous and at the same time full of poetry, with a magnetic gaze, with a seductive smile, with magnificent curls. | |
| Such a lovely head of hair she had just like her Ladyship’s. | had such wonderful hair, just like her ladyship. | |
| Lovely blind Ally with her shiny hair, she smells of roses. | Sweet blind Ellie with shiny hair, smelling like a rose. | |
| Love potions, x-ray specs, sniffing their hair, kissing girls when they tell you not to. | Love potions, X-ray glasses, sniffing hair… You kiss the girls, even if they told you no. | |
| I’d lose all my lovely thick hair. Can’t wait for later. | I’m going to lose all my beautiful thick hair and I can’t wait to see what’s next. | |
| I love a fully made up, long hair, almost feminine-looking Johnny Depp. | I like Johnny Chains in makeup, long hair, almost feminine. | |
| I cut my own hair till the day when an angel of love and kindness… But I do not want to anticipate the state of things that I shall reach later. | I cut my hair short until the angel of love or kindness … But I will not speak ahead of time about the events to which we will soon reach. | |
| I love the way … your sandy hair … floats in the air. | I love the way … your sandy hair … flutters in the wind. | |
| I love your hair. | I like your haircut. | |
| I love your hair short. | I like your short haircut. | |
| And last was Mollie, who was a little beauty with lovely blond hair and violet eyes. | And finally there was Molly, a little beauty, fair-haired beauty with violet-colored eyes. | |
| It was very pale, very lovely, framed in a cloud of dark hair. | Very pale, very beautiful, with a halo of dark hair. The face in the mirror was looking straight at me. | |
| Will you, Ms.Girl swear not to hit him in any circumstances, and love him with all your heart until his hair turns gray? | What about you, Girl? Do you swear not to beat him at every opportunity and love him with all your heart until he turns gray? | |
| Okay, maybe not the pulling hair, jungle love of it all. | Okay, well, maybe we don’t carry bugs out of our heads and we don’t jump on branches .. | |
2017 Buick LaCrosse Essence 1SL specifications, colors, 0-60, 0-100, quarter mile drag and top speed review
The 2018 Buick lacrosse avenir is a deluxe version of Standard Lacrosse with unique styling cues, additional standard features and premium materials.The third-generation Buick lacrosse landed in 2016 after debuting at the 2015 auto show.
Before becoming a trademark of luxury automotive and innovative mechanical engineering, Buick was more interested in plumbing inventions. David Dunbar Buick was born in Arbroath, Scotland and experienced a second coming to life in the mid-30s, when he became particularly interested in gasoline engines. He soon gave up his plumbing business and by the 1900s had already built an impressive number of engines for agriculture and boating.Buick’s passion for engines led him to create his own company called auto-vim and power co.
, however, this choice of name lacked the powerful resonance of its founder’s name, which quickly changed by 1903 – when the company affixed a new name tag to its chest: Buick Manufacturing Co. in the same year, company executives decided to further simplify the name by removing the word “production” from the label.
Once the styling and appearance issues were resolved, Buick focused on developing engines for automobiles.Buick’s attention to its work will soon pay off as the introduction of the OHV engine has earned the company a lot of acclaim.
This was largely due to the valve arrangement that allowed Buick engines to be installed in narrower spaces, giving drivers easy access to service – unlike most car engines of the time (which had angle-mounted valves). although Buick and its chief engineering duo, Eugene Richard and Walter L.marr, managed to avoid some of the complexities associated with the engine, the brand entered the stage of the slow sales paradox.
such financial difficulties arose that by September 1903 David Buick and his financial patron Benjamin Briscoe Jr. sold the firm to a group of railcar manufacturers in Flint, Michigan, 60 miles from Detroit (formerly the headquarters of the Buick plant). Fortunately, the Buick factory was completely flint, which allowed David Buick, the remaining manager, to focus more on his work.
Despite the 1904 construction of the first flint Buick, Model b, the one-year-old flint-Buick fusion was inches away from striking the main body of the metaphorical harassing gentleman. financial difficulties. and it happened. the blow left the company no choice but to seek help.
James H. Whiting, Flint Car Factory Manager, approached William S. “Billy Durant, Flint Car King and Future GM Boss, on the status of the company.”Durant’s business sense, as well as his supernatural intuition and advertising skills, later pulled Buick out of the tar pits he fell into, straight into the flamboyant glamor of the auto show, colorful glamor on the front pages and racing dominance.
Although Durant was not a big fan of cars, he immediately realized the commercial potential of these cars. it was the torque and stiffness of the cars that Buick has built so far that convinced Durant that he had achieved the golden result.
Due to its lightness and strength, proven to be reliable in climbing hills and in muddy terrain, Duran ordered a staggering 1,000 units before the company hit the 40-unit mark.Despite a series of measures to boost production, such as the construction of a new flint plant and a partnership with Charles Stuart Mott (axle supplier and future GM head), Durant saved Buick from near extinction.
Durant was not content with simply ensuring the success of the Buick brand, but went further and conquered the racetrack. his team, consisting of Louis Chevrolet and Wild Bob Boorman (among others), grabbed a total of 500 trophies between 1908 and 1910 alone.The reason Buick had such a success was because by 1908 it had become the leading car manufacturer in the country with 8,820 cars produced. As if that weren’t enough, the new Model 10 surpassed the sales of all other companies by producing 4,002 copies. The success registered with the Buick name grew so much that Durant had the foundation to create a large holding company. This is how General Motors was born.
As the 1920s rolled around, Buick was literally bathed in refreshing popularity as it became the world’s premier automotive brand.in between winning the accolades, Buick was busy crossing the finish lines and drinking champagne from the top of the podiums around the world.
In fact, Buick actually conquered the world, with cars taking part in major expeditions and relocations, such as the first motorized trip to Afghanistan under Lowell Thomas in 1923.
