Q & A: Is stretching helpful or harmful for exercisers?
Posted November 30th, 2007 at 2:12 PM by Andrew Goodman
Section: Health & Fitness, Injury & Rehab, Exercise
Stretching the leg muscles improves muscle flexibility and strength, running speed, and jumping distance, according to a study from Louisiana State University (Medicine and Science in Sports and Exercise, October 2007).
Stretching elongates muscles and tendons. Longer tendons allow muscles to exert a greater torque on the joint to exert more power to help you lift heavier, jump higher and run faster.
However, other studies show that you should not stretch before a competition involving speed and strength (Journal of Bodywork and Movement Therapies, April 2006). The longer the athletes stretched, the weaker they became. Prolonged stretching fatigues muscle fibers so that they contract with reduced force.
Do slow deliberate stretches lasting a few seconds to several seconds, rather than rapid hard pulls on your muscles that can tear them. Stretching cold muscles can also tear them and increase risk for injury. Warm up before stretching or stretch after your workout, but realize that prolonged stretching before a competition can harm performance.
This post is written by Dr. Gabe Mirkin, M.D. and used with permission. Dr. Mirkin is board certified in Sports Medicine and has practiced for over 40 years. He has completed more than 40 marathons and was a talk show host of a nationally-syndicated radio program for about 25 years. For more articles by Dr. Mirkin, please check out: www.DrMirkin.com
***Note: We encourage EVERYONE to see a doctor before altering their diet, taking a supplement and/or performing athletic, fitness or other strenuous physical activity. It is your responsibility to evaluate the accuracy, completeness and usefulness of any information, instruction, opinion or advice contained in the content. Please also see our complete disclaimer.***
Tags: athletes, cold muscle, competition, exert, faster, flexibility, force, injury, injury prevention, joint, jumping, leg muscles, louisiana state university, lsu, muscle fibers, muscle tear, muscles, performance, power, research, risk of injury, running speed, strength, stretching, study, tear, tendons, torque, weaker, workout
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