Study: When to end a run

Dec 09, 2010

Runners who continue running when they are exhausted unknowingly change their running form, which could be related to an increased risk for injury.

A study by Tracy Dierks, assistant professor of at Indiana University, found that toward the end of a normal running session, runners generally displayed an increase in motion in their hips, knees and ankles.

"Our study showed that at the end of a normal run, when they were getting tired, their mechanics were beginning to change," Dierks said. "When you notice , you're most likely putting yourself at increased risk for injuries if you continue because it's more difficult to control the motion ranges."

Dierks said an excessive range of motion in the joints generally is associated with overuse injuries. The extra motion makes it harder for the muscles, tendons and ligaments to handle the strain forces related to running. Common overuse injuries in are patellofemoral pain syndrome and iliotibial band syndrome at the knee and plantar fasciitis at the foot.

Explore further: Use of a 'virtual ward' model of care does not reduce hospital readmissions, risk of death

More information: Dierks' study, "The effects of running in an exerted state on lower extremity kinematics and joint timing," was published in the November "Journal of Biomechanics."

add to favorites email to friend print save as pdf

Related Stories

Running shoes may cause damage to knees, hips and ankles

Jan 04, 2010

Knee osteoarthritis (OA) accounts for more disability in the elderly than any other disease. Running, although it has proven cardiovascular and other health benefits, can increase stresses on the joints of the leg. In a study ...

Study asks how safe is high school football?

Aug 15, 2007

Football, one of the most popular sports in the United States, is also the leading cause of sports-related injuries. During the 2005-06 season, high school football players sustained more than half a million ...

New study reports effects of endurance running

Nov 29, 2010

Using a mobile MRI unit, researchers followed runners for two months along a 4,500-kilometer course to study how their bodies responded to the high-stress conditions of an ultra-long-distance race, according to a study presented ...

Recommended for you

User comments : 1

Adjust slider to filter visible comments by rank

Display comments: newest first

Donutz
not rated yet Dec 09, 2010
So when you get tired, your form goes to hell. Deep.