Journal article
Metabolic characteristics of skeletal muscle during detraining from competitive swimming
DL Costill, WJ Fink, M Hargreaves, DS King, R Thomas, R Fielding
Medicine and Science in Sports and Exercise | LIPPINCOTT WILLIAMS & WILKINS | Published : 1985
Abstract
COSTILL, D.L. W.J. FINK, M. HARGREAVES, D.S. KING, R. THOMAS, and R. FIELDING. Metabolic characteristics of skeletal muscle during detraining from competitive swimming. Med. Sci. Spons Exerc., vol. 17, No. 3, pp. 339-343, 1985. After 5 months of intense training, eight male swimmers were studied during 4 wk of inactivity. Biopsy specimens from the deltoid muscle revealed that its respiratory capacity (Q˙o2) decreased by 50% (5174 to 2559 μ1.h-1· g-1) after 1 wk of inactivity. Subsequent weeks of detraining did not change the Q˙o2. Although the trained swimmers' muscle phosphofructokinase and phosphorylase activities were significantly higher (P < 0.05) than those from a group (N = 8) of untr..
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