Tired runners likely to change their stride.

• Position: Exercise - Brief article

Individuals who continue running when they are exhausted unknowingly change their jogging form, which could be related to an increased risk for injury. A study by Tracy Dierks, assistant professor of physical therapy at Indiana University, Bloomington, found that, toward the end of a normal running session, individuals generally display an increase in motion in their hips, knees, and ankles.

"Our study shows that, at the end of a normal run, when they are getting tired, their mechanics begin to change. When you notice fatigue, you're most likely putting yourself at increased risk for injuries if you continue because it's more...