Study: When to end a run

December 9, 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.

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."

Related Stories

Recommended for you

Moderate coffee drinking 'more likely to benefit health than to harm it', say experts

November 22, 2017
Drinking coffee is "more likely to benefit health than to harm it" for a range of health outcomes, say researchers in The BMJ today.

When traveling on public transport, you may want to cover your ears

November 22, 2017
The noise levels commuters are exposed to while using public transport or while biking, could induce hearing loss if experienced repeatedly and over long periods of time, according to a study published in the open access ...

Different types of alcohol elicit different emotional responses

November 22, 2017
Different types of alcohol elicit different emotional responses, but spirits are most frequently associated with feelings of aggression, suggests research published in the online journal BMJ Open.

Air pollution linked to poorer quality sperm

November 22, 2017
Air pollution, particularly levels of fine particulate matter (PM2.5), is associated with poorer quality sperm, suggests research published online in Occupational & Environmental Medicine.

Sunrise and sunset guide daily activities of city-dwellers

November 21, 2017
Despite artificial lightning and social conventions, the dynamics of daylight still influence the daily activities of people living in modern, urban environments, according to new research published in PLOS Computational ...

Older men need more protein to maintain muscles

November 21, 2017
The amount of protein recommended by international guidelines is not sufficient to maintain muscle size and strength in older men, according to a new study.

1 comment

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.

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.