(Ivanhoe Newswire)--A new study shows stretching immediately before exercise can actually hinder
performance. The study shows stretching is only helpful if it's done regularly.Researchers in Montreal collected and analyzed previous studies about the
effects of stretching on sport performance. Rather than assessing performance in
actual athletic events, the studies focused on stretching in specific tests
related to sport performance.
The analysis included 23 studies evaluating the effects of stretching
immediately before exercise, or acute stretching. Nearly every study found
reduced performance on various tests, including muscle force, torque, and
jumping height.
Researchers also studied the effects of regular stretching programs. They
found performance improved in tests of muscle force production and contraction
velocity, suggesting the benefits resulted from muscle strengthening.
Performance did not worsen in any of the tests paired with regular stretching.
Researchers conclude, "Acute stretching does not seem to improve sport
performance. Pre-exercise stretching may even reduce performance, probably
because of muscle damage caused at the time of the stretch. If one stretches,
one should stretch after exercise or at a time not related to exercise."
Researchers also say recent studies have shown acute stretching does not
decrease injury-related injuries, as regular stretching potentially can.
SOURCE:
Clinical Journal of Sports Medicine, 2004;14:267-2
