Entries Tagged 'sport science' ↓

male gymnasts better than female at landing

Male gymnasts are, as a group, far more skilled at landing.

That’s partly strength. Partly technique.

Uchimura STICK

Compare Uchimura’s soft-as-a-cat landing to this surprisingly typical WAG landing.

Aliya landing

What Aliya did on that Beam dismount was to “punch’ on landing, instead of bringing impact forces to zero. She had no controlled landing. WAG judges are far too lenient on landing deductions (aside from the stupid ‘chest low’ rule). WAG gives very little reward to excellent landings.

Dr. George advises the gymnast see the landing as soon as possible. Reduce forces to zero by absorbing over time and distance.

open on landing
Leg Impact and Landing

USA WAG has added a 0.1 “stick” bonus for 2014. Let’s see if that helps. Gummi points out that the stick bonus may also result in more injuries in competition, especially on twisting landings like Amanar.

related – Coaching Youth Gymnastics by USA Gymnastics: SAFE landings

(via wogymnastika)

___ Update:

Here is Aliya landing that dismount in the Olympics. Quite a bit better.

Aliya Beam dismount

(via wogymnastika)

World Cup skiing to try air bags

… with a radical air bag system being approved for use in World Cup and lower level races beginning in January, Alpine skiing could get a lot safer. …

The system — which entails putting an air bag in the neck area of athletes’ back protectors — was developed by Italian manufacturer Dainese in coordination with the FIS. It inflates when skiers lose control and are about to crash. …

AP

The trick is to find a system that protects on crashes, but does not limit mobility during the race.

Click PLAY or watch it on YouTube.

(via Outside)

judging artistry – neither reliable nor valid

Research study out of University of Ljubljana, Slovenia:

Due to its nature and relatively poor definitions in the Code of points, judging of artistry may suffer from serious flaws in reliability and validity.

We have used the balance beam artistry evaluation forms given by 5 execution judges at World Championship in Tokyo 2011 to analyze reliability and validity.

Data on 194 competitors was gathered. Deductions were received by a highly variable number of competitors from separate judges in the same components of artistry.

The variability of average total artistry deduction was relatively large, ranging from 0.18 to 0.39 points.

The average correlation coefficient in total artistry deductions between all judge pairs was 0.6±0.06 and average correlation coefficient in total deductions from execution score was 0.73±0.04, p < 0.001.

Vika on beamKendall’s coefficient W revealed significant systematic over- or under-rating of judges in the components of artistry of presentation, sureness of performance and variation in rhythm, but also in total artistry deductions (W values ranged from 0.05 to 0.53, p < 0.001 for all W coefficients).

We conclude that neither reliability nor validity of artistry judging was satisfactory in this analysis. Further thorough evaluations of judging performance in artistry are needed to guide accommodations and hopefully improvements in this field. …

Authors are grateful to Nelli Kim, FIG Women’s Technical Committee President who supported this study during and after the World Championship in Tokyo 2011.

Open the study as a PDF.

That was using the rules of the last quadrennial. Still, it’s my belief that different people cannot judge artistry consistently.

Instead, FIG judges should simply apply the Code as written now, deducting for errors in form, body position and rhythm. The most artistic will be rewarded. Consistently.

(via Science of Gymnastics Journal)

Gymnastics Injury Seminar

Oct 18th, 2014 in the Boston area.

Dave Tilley on Facebook:

… registration for the 1st Annual Gymnastics Injury and Performance Seminar (G.I.P.S.) is officially open!

Check out the details, list of presenters, and find the registration forms …

flyer_8.5x11

hybridperspective.com

Deadline for Registration is OCTOBER 15th.

Gymnast Care Round Table

The Gymnast Care Health Round Table

USA Gymnastics Washington Clinic on July 12, 2014.

… Dr. Bill Sands, Dr. John O’Kane and Dr. Monique Burton.

health-roundtable-1

Listen to the 45min audiocast here. 45min. Audio quality is not great.

new book – High Performance Gymnastics

Thomas Heinen from Germany is the principle editor. He’s on the FIG Sport Science Committee.

248 pages

English language

ISBN 978-3-942468-30-5

Google Translate:

The book “High Performance Gymnastics” is of a German-Brazilian cooperation …

It contains the very latest sports science work on device and Gymnastics and Rhythmic Gymnastics. The contributions revolve around sport psychology topics such as the role of the coach or the perception of assets in advance of the Olympic Games, but also movement analytical and biomechanical considerations. …

High Performance Gymnastics

authors

20 EUR

details

Gymnastics and Injury Seminar

Dr. Dave Tilley:

… Saturday October 18th I will be putting the “1st Annual Gymnastics and Injury Performance Seminar” at our gym in Beverly, MA. …

Presenters (so far) include my good friends Dr. Joshua Eldridge of Gymnast Care (Sports Chiropractor), Dave Picardy (Expert Weightlifting/Strength and Conditioning Coach), a local Orthopedic Surgeon (specializes in the athletic shoulder), and myself. More may be added …

$250 for a single spot registration, with discounts offered for group registrations …

Oct 18


Announcing the 1st Annual Gymnastics Injury and Performance Seminar (G.I.P.S. 2014)

Rick McCharles interview

Gigi Khazback Farid interviewed me on WOGymnastikA.

Topics include:

• banning the Produnova vault
• Vault landing mats
• restructuring of World Cups
• FIG Code
• FIG Sport Medicine, Sport Science, Education
• Gymnastics blogging
• Best of the Gymternet

Click through for my answers.

Catching Up With Coach Rick McCharles of Gymnastics Coaching

Rick and Amber

“Winning Gymnastics” archive

Here’s a page to bookmark. Dr. Gerald S. George’s eNewsletter archive. Just a few of the topics covered already:

Mastery of Body Shape
Body-Extension Twist
On-Ground Twisting
Somersault Rotation
A Closer Look at the Stalder
The Tangent Release Principle
Giant Swing Efficiency
Developing Handstand Tension
Shape Up Your Handstand
10 Concepts of Impact
Leg Impact and Landing
Late Sighting
Early Sighting
3 Phases of a Handspring Vault
Hurdle Trajectory
Pre-flight Trajectory
Pst-flight Trajectory
Trajectory-Rotation Relationship
Lift
Rotation
Travel

Part 4 – Gymnastics Technique – Factors Affecting Success
Sureness of Execution
Psychological Readiness–The Ultimate Domain

Part 3 – Gymnastics Technique – Factors Affecting Success
Learning vs. Performance
Skill Sequencing
Compensatory Skills–the Achilles Heel

Part 2 – Gymnastics Technique – Factors Affecting Success
Mastery of Basic Skills (continued from Part 1)
Persistent Use of Repetitions
Use of Appropriate Skill Progressions
Gymnastics Technique – Factors Affecting Success
A Long and Winding Road
All Systems GO
Mastery of Basic Skills
It All Starts in Your Mind’s Eye
The Ideal Model Concept
The Secret to McKayla Maroney’s Vaulting Success
The Staircase Effect
Concepts of Uneven Bars
Dancing with the Bars
Concepts of Vaulting
Fundamental Vaulting Concepts
Minimizing the Board Setting
Concepts of Balance Beam
In-Line Space
Mastering Skills at Ground Level
Concepts of Floor Exercise
Flight
Three Dimensional Space
Concepts of Gymnastics Training
The Gymnast’s Physical Readiness
The Mechanics of Rotation and Twisting
Three types of rotary movement

See MORE on the Archive.

winning gymnastics

Thanks again to Championships Gymnastics, the book, for advertising on this site.

Jet Lag app

Jet lag is nobody’s idea of fun. A bunch of mathematicians say they can make the adjustment less painful with a smartphone app that calculates the swiftest way to adjust.

Users plug in the time zone they’re traveling to, and the app will do the calculations before spitting out a schedule specifying when the user should stay in bright light, low light or be in the dark, says Olivia Walch, a graduate student at the University of Michigan who designed the app. …

This Jet Lag App Does The Math So You’ll Feel Better Faster

I’ve downloaded it to my iPhone. The Android version is still under development.

Great idea. Should work. But those eggheads made it far too feature rich. It’s not intuitive to use.

Click PLAY or watch it on YouTube.

Get it free via iTunes.

Janssen-Fritsen research

Check what’s happening in the Netherlands “lab” gym.

Click PLAY or watch it on YouTube.

“chest position” on landing

GymCastics has lately been including Evan Heiter @yoEv as another of their pundits on the terrific weekly audiocast. Great choice. Evan’s entertaining and knowledgeable.

On the other hand, last week’s episode 71 is titled “The Chest Position Enforcement Bureau“.

Too much deduction on landings for “chest position” is an error.

It happens a lot in WAG NCAA. Judges kill terrific vaults, ignoring multiple technical and form breaks for weaker vaults.

The goal of a landing is to bring huge impact forces to zero. Efficiency on the skill of landing will help reduce landing injuries.

tumblr_m7t0g8mY9b1rurbjwo1_500
via supermura.tumblr

Uchimura is as good as any gymnast who ever lived. Check his shoulder position.

Kohei is using every possible shock absorber, including trunk and hip flexion.

Any set of rules that deducts this performance is ethically, medically and biomechanically wrong. Indeed, young kids should be taught to land like Uchimura from a young age.

Deducting “chest low” is like deducting a gymnast for lack of foot point on the sprint for Vault.

… that said, there are SOME unsafe landings — poorly controlled — that should be deducted. This one, most likely.

Dr. Joshua Eldridge in the comments:

Love it…you are so right on with this post. Our number one goal in gymnastics needs to be protecting athletes from injury.

Increased angular joint movement (proper movement of the hips/knees on landing) is proven to reduce the load placed on the body by allowing muscles to absorb the forces and displace the energy through movement and heat.

Well said that it is unethical to deduct for athletes protecting themselves!!!! I agree fully.

According to the LESS (Landing Error Scoring System), 30 degrees is the optimal hip angle and building more core control can help our athletes maintain this hip angle and not “bow” as much. This 30 degree angle also makes sure glutes are activated which is an important mechanism to make sure the spine is protected.

Bill Sands audiocast

In Session 6 of the Gymnast Care Podcast, we sit down with Dr. Bill Sands and discuss his history in the sport of gymnastics, from the beginnings when he taught himself how to do gymnastics, through college, and the start of his coaching career at Mid America Twisters.

We then get into the meat of this podcast talking about how to protect your gymnast through proper biomechanics, strength training, and recovery.

dr-bill-sands1

Listen to Bill interviewed by Dr. Joshua Eldridge on Gymnast Care. Or download the MP3 from that page. (about 1hr 15min)