PMID: 16619093Apr 19, 2006Paper

Dehydration and symptoms of delayed-onset muscle soreness in normothermic men.

Journal of Athletic Training
Michelle A ClearyZebulon V Kendrick

Abstract

A dehydrated individual who performs eccentric exercise may exacerbate skeletal muscle damage, leading to structural, contractile, and enzymatic protein denaturation, in addition to the myofiber and connective damage resulting from the eccentric muscle tension. To identify the effects of dehydration on 5 physiologic characteristics of delayed-onset muscle soreness (DOMS) in normothermic men after an eccentric exercise perturbation. Randomized group test-retest design. Laboratory. Ten healthy male volunteers randomly assigned to either a euhydration (age = 26.2 +/- 4.9 years, height = 174.1 +/- 6.0 cm, mass = 86.5 +/- 15.3 kg) or dehydration (age = 25.8 +/- 2.2 years, height = 177.2 +/- 3.1 cm, mass = 84.4 +/- 3.8 kg) group. Subjects performed treadmill walking for 45 minutes in either a thermoneutral (euhydration) or a hot, humid (dehydration) environment. After a rest period to allow for return to the normothermic condition, DOMS was induced with a 45-minute downhill run. We assessed 5 physiologic characteristics of DOMS before and at intervals after the eccentric exercise. The characteristics were perceived pain of the bilateral quadriceps and overall body, bilateral punctate tenderness of the superficial quadriceps muscles, ...Continue Reading

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