2013年6月25日星期二

Tightrope over gorge at Grand Canyon: Nik Wallenda's 'tricks' are incredible balance and arm muscle endurance

Tightrope over gorge at Grand Canyon: Nik Wallenda's 'tricks' are incredible balance and arm muscle endurance

June 24, 2013 — Nik Wallenda, who completed a 1,400-foot tightrope walk over a river gorge near the Grand Canyon on live television Sunday, is not super-human despite his successful feat, according to Ajit Chaudhari (AH-jit CHOW-dree), an assistant professor of orthopaedics at The Ohio State University.






The Discovery Channel invited Chaudhari to serve as a biomechanics consultant for the program that aired Sunday night.

Chaudhari might even call Wallenda an "average guy" except for two specific qualities: better balance than 99 percent of other humans and significant endurance in his arm muscles, enabling him to carry a 43-pound pole for 45 minutes without experiencing fatigue.

Wallenda also has excellent control over his heart rate variability, which indicates his ability to remain calm on the wire, noted Chaudhari, who is co-director of the Movement Analysis & Performance Program in Sports Medicine at Ohio State's Wexner Medical Center.

"I can't say whether it's genetics or practice, but from what I observed, it comes down to the mental fortitude to be able to not think about fear or falling and to focus on the task at hand," Chaudhari said. "I'm sure it doesn't hurt that he has been practicing for essentially his entire life."

Chaudhari made an appearance on the Sunday program; he collected data about Wallenda during practice walks in Sarasota, Fla., earlier in June. Under study: Wallenda's balance with shoes and barefoot, with eyes open and closed, and with and without the balancing pole; grip strength; and heart rate. Chaudhari also used electromyography to detect the muscle activity in Wallenda's arms.

Even after watching Wallenda practice without safety gear, Chaudhari said he was nervous while watching the live broadcast on TV.

Chaudhari's research focuses on the role of core stability and balance in the prevention and treatment of injuries across the entire body and the mechanisms behind overuse running injuries, ACL injuries and throwing injuries, all with the goal of answering a basic question: Can we better understand how athletic injuries happen by studying the human body as a mechanical system?



Welcome to SUV System Ltd!

SUV System Ltd is ISO 90012008 Certified electronics distributor with 10 years of experiences.

We have built up long term business relationship with about many companies which are stockers and authorized agents. we have a steady and reliable supply to meet customer's demands to the greatest extent .Confidently, we are able to lower your cost and support your business with our years of professional service.

SUV System Ltd is Electronic Components Distributor Supplies,Find Quality Electronic Components Supplies Products IC(Integrated Circuits),Connectors,Capacitor,Resistors,Diodes,Transistors,LED at Suvsystem.com. Sourcing Other Energy, Environment, Excess Inventory Products from Manufacturers and Suppliers at Suvsystem.com

Electronic Components distributor:http://www.suvsystem.com

Connectors Distributor:http://www.suvsystem.com/l/Connectors-1.html

IC Distributor:http://www.suvsystem.com/l/IC(Integrated-Circuits)-1.html

LED Distributor:http://www.suvsystem.com/l/LED-1.html

Capacitor Distributor:http://www.suvsystem.com/l/Capacitor-1.html

Transistor Distributor:http://www.suvsystem.com/l/Transistors-1.html

Resistor Distributor:http://www.suvsystem.com/l/Resistors-1.html

Diode Distributor:http://www.suvsystem.com/l/Diodes-1.html

SUV System Ltd insists on the managing faith ofsincereness,speciality,foresight, win-win,so we build up stable-relationship customers located all over the world, including the States, Europe, Argentina, UAE, Malaysia, Australia,and India etc

we are focus on the following fields,and hope we can help you.


B41252C7688M000 B41303A9687M000 B41303A9687M B41303A8158M7 B41303A8158M2 B41303A8158M007 B41303A8158M002 B41303A8158M000 B41303A8158M B41303A7688M7 B41303A7688M2 B41303A7688M007 B41303A7688M002 B41303A7688M000 B41303A7688M B41303A7338M7 B41303A7338M2 B41303A7338M007 B41303A7338M002 B41303A7338M000 B41303A7338M B41303A7159M7 B41303A7159M2 B41303A7159M007 B41303A7159M002 B41303A7159M B41303A5478M7 B41303A5478M2 B41303A5478M007 B41303A5478M002 B41303A5478M000 B41303A5478M B41303A4688M7 B41303A4688M2 B41303A4688M007 B41303A4688M002 B41303A4688M000 B41303B4339M002 B41303B4339M000 B41303B4339M
http://www.suvsystem.com/a/3179.aspx