The Weller spring claims to reduce the impact force.
In Stride – Sports Medicine
By Jordana Bieze Foster
When three gymnasts from three different countries suffered torn Achilles tendons while practicing or competing in floor exercise at the 2003 World Championships in Anaheim, CA, gymnastics experts had to wonder whether the floor itself had contributed to the injuries.
As the International Gymnastics Federation’s scoring code has evolved to reward gymnasts for difficult aerial maneuvers, so has the surface on which floor exercises are performed become less stiff, incorporating spring coils to afford gymnasts more air time in which to twist and turn. But the injuries to American Courtney Kupets, Belarusian Dmitri Kasparovich, and Russian Evgeni Krylov on the world stage in 2003, followed by another Achilles tear suffered by Tabitha Yim at the U.S. Olympic team selection camp the following year, suggest that there is a biomechanical price to be paid for that competitive advantage.
“Sadly, we believe that the floor and vault board are major contributors to Achilles tendon and other injuries,” said William A. Sands, PhD, head of sport biomechanics and engineering for the U.S. Olympic Committee in Colorado Springs, CO. “In my view, there is a problem with apparatus design that has its genesis in a lack of understanding of the nature of impact, vibration, and energy return of the apparatus.”
… Sands and his colleagues are working to create a more detailed picture of the athlete/apparatus interaction, using EMG, high-speed video, accelerometers, and Tekscan and Polhemus systems.
“There are a number of subtle nuances that haven’t been addressed and should be,” Sands said. “These include gymnasts’ age, weight, strength, experience, periodization of training, and bone, ligament, and tendon health. This is a very complex problem with a lot of tentacles going in different directions.”
Bryan Milonja edits the excellent Trampoline Canada blog.
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Here’s a video on Charles Thibault that Julien Roberge and I worked on together.
Thibault, who trains at ITECQ in Quebec City, is currently ranked as the second best male trampolinist in the country.
The video includes parts of an interview I conducted with Thibault after he won the 2nd Quebec Cup on February 28th in Saint-Hyacinthe. The compulsory routine shown in the video is from this same meet and the optional work is from some of his previous training sessions.
Olympic silver medallist Jason Burnett of Toronto won the gold medal in menâ€™s trampoline Saturday to close out the Elite Canada trampoline and tumbling competition in Kelowna, B.C.
Burnett totalled a score of 109.60 points for the win. Charles Thibault of Quebec City was second at 104.10 and Carl-Rom Colthoff of Toronto third at 102.70.
In womenâ€™s trampoline, Rosannagh MacLennan of Toronto took the title with 102.70 points.
Kailey McLeod of Toronto was second at 98.55 and Brenna Casey of Ottawa third at 96.40.
Veteran Karen Cockburn of Toronto, who hasnâ€™t competed since winning her third consecutive Olympic medal last summer in Beijing, is skipping the meet and will focus on World Cups and the world championships later this year.
Other winners Saturday include Andrew Egyed of Calgary in menâ€™s tumbling, Ashley Speed of Etobicoke, Ont., in womenâ€™s tumbling, Luke Friesen of Kelowna in menâ€™s double mini trampoline and Gillian Bruce of Calgary in womenâ€™s double mini trampoline.
In youth competition, Keegan Soehn of Red Deer and Mariah Madigan of Toronto in topped the menâ€™s and womenâ€™s trampoline, respectively, while Amiel Clarke of Calgary and Megan Mereniuk of Coquitlam, B.C., were first in menâ€™s and womenâ€™s tumbling.
The event was the first of three qualifying meets for the national team.
The 26th Trampoline Gymnastics World Championships are set for St Petersburg (RUS), November 11 – 14, 2009. This competition falls just prior to the 18th World Age Group Competitions for the 11 â€“ 18 year category, which will be subject to difficulty limitations. A first of its kind, the FIG and its Technical Committee engineered the competition to safeguard gymnast safety in high-level sport and to give even more precedence to execution over trendier risk taking. The Code of Points provides for this by making execution considerably more advantageous than difficulty.
The decision was guided by the political mindset championed by the Federation and its President, Prof. Bruno Grandi, who recently declared: â€œGymnastics in any form is most importantly a means of body expression through which athlete and coach alike must give preference to execution, artistic expression, over reckless and dangerous risk taking.â€ The Presidentâ€™s message was clear, and the judges and experts present in St Petersburg will make it their priority to respect this order.
Isn’t this the same Prof. Bruno Grandi who championed the open-ended code after 2004, leaving girls on Floor and Beam no time for any kind of artistry?
… In 2004-2005 the FIG and its president Grandi developed a new scoring system, in which an open ended scoring will be used, so that the marks are theoretically limitless. The majority of the FIG did vote in favour of the new Code. This was a controversial move: many fans and athletes alike campaigned against it, speaking out in opposition …
That’s 16.7 start, 16.9 if he does whip -> 2.5 twist as he originally intended. Right?
NICK calculates only 16.6â€¦.F(6)-F(6)-[C+D](3+1+4)-B(2)-C(3)-[D+C](4+1+3)-C(3)-E(5)=4.1+2.5+10=16.6
UPDATE: From Geoffrey Taucer:
Actually, Nickâ€™s off by one tenth; according to the latest NGJA interperetations release, the value theyâ€™ve given the DLO 5/2 is a G, not an F. Otherwise, his calculations appear to be accurate (assuming the final pass is an arabian double pike and not an arabian double lay; which is probably an accurate assumption).
This would put the start value of this routine at 16.7.
Don Eckert posts by far the most interesting gymnastics videos on the internet. And now he’s sponsored by Gibson (Mats, Beam, Bars, Grips, …)
The first training camp is scheduled for February 19-22 at The Matrix in Huntsville, TN.
The USA is not nearly as strong in Trampoline and Tumbling as I would expect for a sports superpower. JumpStart is their talent identification program for kids ages 7-12. A high priority is providing coach education for these athletes as they advance.