Entries Tagged 'sport science' ↓

GYMNASTICS Handbook of Sports Medicine & Science

To be published October 2013.

UPDATE – Available for preorder now $59.95 in the USA.

The Handbook of Sports Medicine is an ongoing series of specialist reference volumes sponsored by the International Olympic Committee (IOC) and designed specifically for the use of professionals working directly with competitive athletes.

The target groups for whom this handbook is written includes (1) interested medical doctors who have little or no training in sports medicine, as well as sports medicine professionals; (2) physiotherapists and other health-related professionals; (3) team coaches who have academic preparation in the basic sciences; and (4) knowledgeable gymnasts.

The purpose of this volume is to present a comprehensive, state-of-the-art description of the medical and scientific aspects of Olympic gymnastics sports.

Gymnastics Caine Russell Lim

Dennis Caine, Professor and Interim Dean College of Education and Human Development, University of North Dakota

Keith Russell, President Scientific Commission (FIG)

Liesbeth Lim, Former National Sports Physician of the Royal Dutch Gymnastics Federation, 1997–2012

Science of Gymnastics Journal

New edition just posted. Vol.5., num.1, 2013.

Ivan Cuk
Editorial
Myrian Nunomura, Mauricio Santos Oliveira
PARENTS SUPPORT IN THE SPORTS CAREER OF YOUNG GYMNASTS

Thomas Heinen, Stefanie Mandry, Pia M. Vinken, Marc Nicolaus
MOTOR SKILL ACQUISITION INFLUENCES LEARNERS VISUAL PERCEPTION IN GYMNASTICS

Bojan Leskošek, Ivan Cuk, Maja Bujar Pajek
TRENDS IN E AND D SCORES AND THEIR INFLUENCE ON FINAL RESULTS OF MALE GYMNASTS AT EUROPEAN CHAMPIONSHIPS 2005–2011

Antonio Pineda-Espejel, Jeanette López-Walle, José Tristán Rodríguez, Mireya Medina Villanueva, Oswaldo Ceballos Gurrola
PRE-COMPETITIVE ANXIETY AND SELF-CONFIDENCE IN PAN AMERICAN GYMNASTS

Karmen Šibanc
HOW P.E. STUDENTS EVALUATE THEIR INTEREST AND POPLARITY OF ARTISTIC GYMNASTICS

Mavrovouniotis Fotios, Proios Miltiadis, Argiriadou Eirini, Soidou Andromahi
DYNAMIC BALANCE IN GIRLS PRACTICING RECREATIONAL RHYTHMIC GYMNASTICS AND GREEK TRADITIONAL DANCES

Kizzy Fernandes Antualpa, Roberto Rodrigues Paes
STRUCTURE OF RHYTHMIC GYMNASTICS TRAININGS CENTER IN BRAZIL

SIGARC
SIGARC 2012 REPORT

Click through to the Current Issue page to download any of those PDFs. Or the entire journal as one PDF.

Journal

Our Body

One of the touring human anatomy exhibitions was visiting San Salvador. A few gymnastics coaches took in the show.

Our Body

Always memorable and informative, this version (called “Our Body”) was smaller than the other two I’d seen in the past.

No gymnastics poses.

We took special notice of the width of the Achilles tendon. Very narrow on the corpses we saw.

USAG has appointed a new Medical Task Force. I’m sure Achilles injury will be on their agenda.

Dr. Jay Binder
Dr. George Drew
Dr. David Kruse
Dr. Larry Nassar
Ralph Reiff
Alicia Sacramone

The areas the task force will review for best practices include:
“At risk” injuries and treatment, such as concussions, major long bone fractures and dislocations, major reconstructive surgeries, etc.

Medical team members’ responsibilities, including communicating with coaches and USA Gymnastics, obtaining appropriate referrals and follow-up care, and ethical obligations for addressing or reporting significant issues.

quit ice baths?

During the London TV coverage, we saw plenty of Olympians in ice baths for once reason or another.

But some are now questioning the risk / reward for taking the plunge:

Elite athletes are wasting their time by plunging into icy water after intense exercise and may even be putting their health at risk, according to new research.

Scientists at the University of Portsmouth have found cold water immersion is no more and no less effective in helping an athlete recover after sport than light cool-down exercise.

They also warn the practice of plunging into ice baths, common among elite athletes such as the marathon runner Paula Radcliffe and the England rugby team, might do more harm than good. …

Bathing in ice after intense exercise ‘does not work’, says new report

A quick look at that research and a few other sport science articles on the topic leads me to believe the headline overstates. There’s simply not enough research yet to determine risks / benefits conclusively.

Leave a comment if you are convinced not to ice for recovery.

Science of Gymnastics Journal

Most recent edition has just been posted.

Here are a couple of studies that may be of interest.

… sample consisted of 27 female gymnasts and 15 controls. …

… Sedentary adolescents show a higher prevalence of overweight, hypertension, osteopenia and final height prediction. In this particular group of athletes, competitive gymnastics influences body composition but does not appear to compromise nutritional status, normal progression of puberty, bone mass and genetically defined final height. …

GYMNASTICS AND THE FEMALE ATHLETE TRIAD: REALITY OR MYTH? (PDF)

Another compared take-off’s kinetic and kinematic variables of elite male gymnasts doing different kinds of standing backward saltos.

KINEMATIC AND KINETIC ANALYSIS OF COUNTER MOVEMENT JUMP VERSUS TWO DIFFERENT TYPES OF STANDING BACK SOMERSAULT (PDF)

gymnastics coaching posture

It’s interesting and sometimes amusing to watch gymnastics coaches, especially in competition.

In preparation for his role in Stick It, Jeff Bridges studied American coaches at Junior Olympic competitions. And asked gymnasts, including Isabelle Severino, how he should act in certain situations.

Scientific research contends that “power posing” actually works. That you can “fake it until you BECOME it“.

Body language affects how others see us, but it may also change how we see ourselves. Social psychologist Amy Cuddy shows how “power posing” — standing in a posture of confidence, even when we don’t feel confident — can affect testosterone and cortisol levels in the brain, and might even have an impact on our chances for success.

Click PLAY or watch her TED talke on YouTube.

Thanks Ron.

recovery – Stanford’s Cooling Glove

This technology has been around for years. It promises much for those athletes where training is limited by overheating.

I’m not sure I see any applications for acrobatic sport, though.

Click PLAY or watch it on YouTube.

(via All Things Gym)

Armstrong’s doctor could face criminal charges

Michele Ferrari … 10 July 2010 the US Anti-Doping Authority issued Ferrari a lifetime sports ban for numerous anti-doping violations including possession, trafficking, administration and assisting doping. …

… Usada said it “has found overwhelming proof that Dr Michele Ferrari facilitated doping for numerous members of the US Postal Service and Discovery.”

The report showed that Armstrong had paid more than $1m to a company controlled by the Italian and said that Armstrong had conceded he met Ferrari on a monthly basis. Riders testified that he supervised blood transfusions, EPO injections and the use of testosterone.

Ferrari centre

Ferrari was quoted as saying: “If I were a rider, I would use the products which elude doping controls if they helped to improve my performances.” …

Lance Armstrong case: The key players in the affair

If you’ve somehow avoided the Lance Armstrong scandal, catch up on Outside – LANCE ARMSTRONG AND THE LOST BOYS.

I’m happy acrobatic sports are so much “cleaner” than worst offenders, including Olympic Weight Lifting, Shotput and Cycling.

Thera-Band FlexBar

At Taiso, Saskatoon I saw this conditioning aid.

Thera-Band FlexBar $19.99

Marketed for golfers and tennis players, Taiso is using it for conditioning the wrists … in an attempt to reduce wrist pain.

Wrists pain on Pommels is the #1 overuse injury for competitive male gymnasts.

Click PLAY or watch it on YouTube.

Useful for general wrist strengthening too, of course.

The Bars get softer over time, with use.

related – Journal of Shoulder Surgery 2010 – Addition of isolated wrist extensor eccentric exercise to standard treatment for chronic lateral epicondylosis: A prospective randomized trial (PDF)

cat twist – literally

High Speed video. Cats. Physics. Weightlessness. …

Click PLAY or watch it on YouTube.

GiGi was not hurt during the making of this video. We took great care to make sure she would be safe.

… this involves some serious math. (PDF) …

(via Kottke)

Jessica Lopez, Kohei Uchimura

#london2012

Gymnasts are amazing. The general public is reminded with sport science TV shows like these.

Click PLAY or watch Jessica Lopez on YouTube.

A true sport scientist would have some quibbles, I think.

Click PLAY or watch Kohei’s triple double off H Bar on YouTube. Super slow-mo. A Japanese sport science clip.

related – NY Times – The Near Perfection of Kohei Uchimura

YouTube in slow motion

Valentin Uzunov posted on an important topic on his new Coaching Methods blog:

… when we observe movements at rates faster than 230°/s, we cannot see much detail of the motion, instead we get just a blurred view of the object tracked. …

Take the pre-flight in a Yurchenko vault. It takes 0.12 – 0.22ms from board take-off to hand contact. …

How much does the coach see?

Valentin concludes that new technology (cameras, iPad apps, etc.) are valuable for the coach (or judge) who wants to know EXACTLY what the athlete is doing.

JBS responded on the Chalk Bucket forum recommending an iPod touch with Coach’s Eye software.

JBS had a second recommendation, new to me:

Also…log into …YouTube – Broadcast Yourself.

Opt into the html 5 trial. Once opted in you can click on the gear in a youtube video and watch it in 1/4 time or 1/2 time…slow motion on youtube! …

I found YouTube videos where it didn’t work in the Chrome browser. But it does for this one, if you want to try it yourself: YouTube – Alicia Sacramone – Vault – 2008 Visa Championships – Day 1

Cool. :)

Bill Sands on Achilles


The Chinese women’s gymnastics team was dealt a major blow on Thursday morning when four-time world champion Cheng Fei tore her Achilles tendon during a training session, rendering her unable to compete in the London Olympic Games. …

Team leader Ye Zhennan criticized the Games’ preference for high-difficulty routines, saying it’s the reason competitors get hurt more often.

… Ye wrote on his micro blog on Friday. “The development of the game’s difficulty has gone beyond the female athletes’ physical limits, causing a lot of injuries that will cut their careers shorts.”

Ye said FIG (Federation Internationale de Gymnastique) should take Cheng’s injury seriously and revise its rules. …

China Daily

Not surprisingly, it was triple twist on Floor. Extreme ankle dorsiflexion.

She’s smiling. Click PLAY or watch Cheng from her hospital bed on YouTube.

Seems it takes a serious injury to a major player to get any attention from mainstream media. Gymnastics is dangerous. FIG’s new Code rewards most whomever has the highest start score. Many times that requires athletes to risk more dangerous routines.

I previously said there’s not much we can do to reduce Achilles injury. But perhaps I’m wrong. Here’s full commentary from Dr. Bill Sands on the topic:


I’m really sorry to see another ruptured Achilles tendon. Sadly, I do know the mechanism that causes these injuries …

I have a presentation that I hope to do at the USECA meeting at Congress. The research involving two types of springs is complete. One equipment company has taken the information and redesigned their floor due to the results that I shared with them some months ago.

Achilles tendon ruptures have occurred on foam and spring floors, so it’s not the spring system alone that “causes” the problem. And, herein lies much of the complexity. Again sadly, Achilles tendon ruptures are due to the interaction of “worn” connective tissues from the triceps surae group (e.g. too much training with insufficient recovery), concentration of forces in one of the bundles of connective tissues in the tendon (from Bruggemann, anatomical loading factors), foot position (increased pronation) during takeoff (athletes generally don’t take off symmetrically), and the way the spring floors recoil and move during a take off (causing sudden increased stretch of the triceps surae complex).

Interestingly, I had the first American girl to do a full-in on floor exercise (Christa Canary, I know ancient history) and she did it on two inches of ethafoam over concrete (I’m so old there were no spring floors then). In fact, with a lengthy list of excellent tumblers – I never had a single Achilles tendon rupture. However, we monitored training repetitions of skills very closely using (then) very primitive computers. In my view, there needs to be a paradigm shift in thinking to “preserve the skeleton and connective tissue while training the muscle.” Of course, there are a variety of ways to do this, but monitoring is crucial.

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1. Sands WA. National women’s tracking program pt. 2 – response. Technique. 1990;10(1):23-7.
2. Sands WA. Fragen zum training der nationalmannschaft der US-Junioren (Frauen) im kunstturnen. In: Gohner U, editor. Leistungsturnen im kindesalter. Stuttgart, Germany: Internationaler Turnerbund (FIG) und das Organisationskomitee Weltmeisterschaften im Kunstturnen Stuttgart 1989; 1990. p. 81-96.
3. Sands WA. Monitoring the elite female gymnast. National Strength and Conditioning Association Journal. 1991;13(4):66-71.
4. Sands WA. Monitoring elite gymnastics athletes via rule based computer systems. Masters of Innovation III. Northbrook, IL: Zenith Data Systems; 1991. p. 92.
5. Sands WA. AI and athletics. PC AI. 1992;6(1):52-4.
6. Sands WA. How can coaches use sport science? Track Coach. 1995;134(winter):4280-3.
7. Sands WA. Monitoring power. In: Bardy BG, Pozzo T, Nouillot P, Tordi N, Delemarche P, Ferrand C, et al., editors. Actes des 2Šmes Journ‚es Internationales d’Etude de l’AFRAGA. Univerist‚ de Rennes, Rennes, France: L’Association Fran‡aise de Recherche en Activit‚s Gymniques et Acrobatiques (A.F.R.A.G.A.); 2000. p. 102.
8. Sands WA, editor. Monitoring gymnastics training. 3èmes Journées Internationales d’Etude de l’AFRAGA; 2002 7-9 November 2002
2002; Lille, France. Lille, France: AFRAGA.
9. Sands WA, Henschen KP, Shultz BB. National women’s tracking program. Technique. 1989;9(4):14-9.
10. Sands WA, Shultz BB, Newman AP. Women’s gymnastics injuries. A 5-year study. American Journal of Sports Medicine. 1993;21(2):271-6.
11. Sands WA, Stone MH. Are you progressing and how would you know? Olympic Coach. 2006;17(4):4-10.
12. Sands WA, Stone MH. Monitoring the elite athlete. Olympic Coach. 2006;17(3):4-12.
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Interestingly, I co-hold a patent on a device to prevent extreme ankle dorsiflexion. Feel free to look it up and see if it might help your athletes. The device was required for some of my former gymnasts.

Patent Number #4,227,321. Device called the “Safe-T-Strap” designed to prevent extreme ankle dorsiflexion in gymnasts and other athletes.
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I’ve been studying the spring floor now since about 1994, and even back then the old 2 inch spring floor showed the same problems. I will be submitting the results and manuscript for publication after Olympic Trials. The work includes high-speed video (500-2000 Hz), Vicon kinematics (200 Hz), and the accumulation of work from myself and others for almost 20 years.

Certainly, considerably more research remains to be done. I believe I know the mechanism, but then comes the hard part, how to change apparatuses to reduce or eliminate this problem.

Modeling is going to be needed, and my ability to do that level of work is very limited (I’m a physiologist, although most seem to think I’m a biomechanist). I hope that Maurice Yeadon, Peter Bruggemann, and Jeroen Van der Eb, along with the FIG Scientific Committee will take up this issue. This work is long overdue, and current means and methods of certifying a spring floor are pretty good for engineering, but do nothing to look at the athlete-apparatus interactions. I’ve been preaching this for almost 20 years now. But, then again, who listens to me.

We do, Doc.

Thanks for your work ongoing.