Cut The Run Short When Fatigued

Runners and sports medicine researchers have debated for eons the ideal time to stop running to avoid injury. Think about it in terms of exhaustion. On a scale of 1 to 20, with 1 just starting out on a run and 20 absolutely gassed, a perceived rate of exhaustion in the 13 to 15 range indicates fatigue. Sure you can keep going. But should you?

A new study published in the Journal of Biomechanics suggests this might be a good time to call it a day. An analysis of 20 uninjured recreational runners showed that poor running mechanics begins to take hold as fatigue sets in. This bad form can contribute to overuse injuries because it's more difficult for joints and tendons to control the exaggerated range of motion when you aren't running correctly.

True Strength Moment: The runners used in this study typically put in about 10 miles a week. If these very active adults had trouble maintaining proper running form after reaching fatigue, someone who's just beginning a running routine won't either. It's something to think about when you hop on the treadmill January 2nd.
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