Featured Research

from universities, journals, and other organizations

Oscar Pistorius: Amputee Sprinter Runs Differently

Date:
August 4, 2009
Source:
Southern Methodist University
Summary:
A team of experts in biomechanics and physiology have conducted experiments on Oscar Pistorius, the South African bilateral amputee track athlete.

Peter Weyand, now associate professor of applied physiology and biomechanics at SMU, observes Oscar Pistorius on the treadmill at the Rice University Locomotion Laboratory in Houston. The biomechanics and physiology research team submitted its findings to the Court of Arbitration for Sport in May 2008.
Credit: Jeff Fitlow/Rice

A team of experts in biomechanics and physiology that conducted experiments on Oscar Pistorius, the South African bilateral amputee track athlete, have just published their findings in the Journal of Applied Physiology. Some of their previously confidential findings were presented to the Court of Arbitration for Sport (CAS) in Lausanne, Switzerland in May of 2008. Other findings are now being released for the first time.

A portion of the team's findings had been presented at the CAS to appeal the eligibility ban that had been imposed on Pistorius by the International Association of Athletics Federations (IAAF) barring him from sanctioned competitions, including the Olympics and World Championships.

The IAAF had claimed that the Cheetah Flex-Foot prostheses (J-shaped, high-performance prostheses used for running) worn by Pistorius give him an advantage over able-bodied runners.

The appeal was successfully presented on behalf of Pistorius by the international law firm of Dewey & LeBoeuf, who took the case on a pro-bono basis. The CAS concluded that the IAAF failed to prove that the biomechanical effects of the Cheetah prostheses give Pistorius an advantage over other athletes not using the prostheses.

The authors of the study are Peter Weyand of Southern Methodist University, Matthew Bundle of the University of Wyoming, Craig McGowan of the University of Texas at Austin, Alena Grabowski and Hugh Herr of the Massachusetts Institute of Technology, Mary Beth Brown of Georgia Institute of Technology and Rodger Kram of the University of Colorado at Boulder. None of the authors received compensation for the research or work on behalf of the CAS hearing. The group agreed to conduct the experiments with the understanding that they would be able to publish their scientific findings after the CAS ruling.

The experiments were conducted at the Locomotion Laboratory of Rice University in Houston, Texas.

The scientific team compared Oscar Pistorius to track athletes with intact limbs to evaluate his:

  • Energy cost of running
  • Fatigue resistance
  • Sprinting mechanics

The team concluded that:

  • Pistorius' energy cost of running is similar to that of accomplished male distance runners, but 17% lower than that of performance-matched male sprinters.
  • Pistorius' ability to hold his speed over longer sprint races is identical to that of intact-limb athletes.
  • Pistorius sprinting mechanics are markedly dissimilar to intact-limb track athletes.

At top speed:

  • He exerts considerably less force on the ground in relation to his body weight than intact-limb runners.
  • His foot is in contact with the ground 14% longer on each sprinting step
  • He spends 34% less time in the air between steps
  • He takes 21% less time to reposition (swing) his legs between steps.

In summary, the team concluded that Pistorius' physiology (energy cost and fatigability) is generally similar to that of intact-limb athletes, but his sprint running mechanics are markedly dissimilar.

The lead author of the study, Dr. Peter Weyand, indicated "I am pleased that we can now completely disclose our results because our study includes critical new data not presented in the CAS eligibility hearing. In addition to informing an interested public, full disclosure is in the best interests of Oscar Pistorius, other track athletes and the sport of Track and Field. The controversy raised by Oscar's inspiring performances presents a pivotal case for the future regulation of prosthetic and other technology in organized athletics. Accordingly, disseminating all the available facts is essential. I am relieved that all of our data are now available, particularly the mechanical data that are most relevant to the controversy and which were not part of the CAS hearing."

Weyand is an Associate Professor in Department of Applied Physiology and Wellness at the Simmons School of Education and Human Development at Southern Methodist University in Dallas, Texas.


Story Source:

The above story is based on materials provided by Southern Methodist University. Note: Materials may be edited for content and length.


Cite This Page:

Southern Methodist University. "Oscar Pistorius: Amputee Sprinter Runs Differently." ScienceDaily. ScienceDaily, 4 August 2009. <www.sciencedaily.com/releases/2009/06/090629132200.htm>.
Southern Methodist University. (2009, August 4). Oscar Pistorius: Amputee Sprinter Runs Differently. ScienceDaily. Retrieved July 23, 2014 from www.sciencedaily.com/releases/2009/06/090629132200.htm
Southern Methodist University. "Oscar Pistorius: Amputee Sprinter Runs Differently." ScienceDaily. www.sciencedaily.com/releases/2009/06/090629132200.htm (accessed July 23, 2014).

Share This




More Health & Medicine News

Wednesday, July 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Courts Conflicted Over Healthcare Law

Courts Conflicted Over Healthcare Law

AP (July 22, 2014) Two federal appeals courts issued conflicting rulings Tuesday on the legality of the federally-run healthcare exchange that operates in 36 states. (July 22) Video provided by AP
Powered by NewsLook.com
Why Do People Believe We Only Use 10 Percent Of Our Brains?

Why Do People Believe We Only Use 10 Percent Of Our Brains?

Newsy (July 22, 2014) The new sci-fi thriller "Lucy" is making people question whether we really use all our brainpower. But, as scientists have insisted for years, we do. Video provided by Newsy
Powered by NewsLook.com
Scientists Find New Way To Make Human Platelets

Scientists Find New Way To Make Human Platelets

Newsy (July 22, 2014) Boston scientists have discovered a new way to create fully functioning human platelets using a bioreactor and human stem cells. Video provided by Newsy
Powered by NewsLook.com
Gilead's $1000-a-Pill Drug Could Cure Hep C in HIV-Positive People

Gilead's $1000-a-Pill Drug Could Cure Hep C in HIV-Positive People

TheStreet (July 21, 2014) New research shows Gilead Science's drug Sovaldi helps in curing hepatitis C in those who suffer from HIV. In a medical study, the combination of Gilead's Hep C drug with anti-viral drug Ribavirin cured 76% of HIV-positive patients suffering from the most common hepatitis C strain. Hepatitis C and related complications have been a top cause of death in HIV-positive patients. Typical medication used to treat the disease, including interferon proteins, tended to react badly with HIV drugs. However, Sovaldi's %1,000-a-pill price tag could limit the number of patients able to access the treatment. TheStreet's Keris Lahiff reports from New York. Video provided by TheStreet
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins