Functional properties of slow and fast gastrocnemius muscle fibers after a 17-day spaceflight

• Published in: Journal of applied physiology (1985) Vol. 90; no. 6; pp. 2203 - 2211
• Main Authors: Widrick, J. J, Romatowski, J. G, Norenberg, K. M, Knuth, S. T, Bain, J. L. W, Riley, D. A, Trappe, S. W, Trappe, T. A, Costill, D. L, Fitts, R. H
• Format: Journal Article
• Language: English
• Published: Legacy CDMS Am Physiological Soc 01.06.2001; American Physiological Society
• Subjects: Applied physiology; Astronauts; Atrophy; Biological and medical sciences; Calcium - pharmacology; Electrophoresis, Polyacrylamide Gel; Ergonomics. Work place. Occupational physiology; Gravity; Human physiology applied to population studies and life conditions. Human ecophysiology; Humans; Life Sciences (General); Medical sciences; Muscle Contraction - drug effects; Muscle Contraction - physiology; Muscle Fibers, Fast-Twitch - physiology; Muscle Fibers, Fast-Twitch - ultrastructure; Muscle Fibers, Slow-Twitch - physiology; Muscle Fibers, Slow-Twitch - ultrastructure; Muscle, Skeletal - cytology; Muscle, Skeletal - physiology; Muscle, Skeletal - ultrastructure; Muscular system; Myofibrils - physiology; Space biology; Space Flight; Space life sciences; Clinical Trial; Non-Nasa Center; Sts-78 Shuttle Project; Nasa Discipline Musculoskeletal; Manned; Short Duration; Nasa Experiment Number 8913020 1/2; Flight Experiment; Human; Crew; Astronaut; Contractility; Muscular fiber type I; Contractile protein; Environmental factor; Weightlessness; Space flight; Striated muscle; Muscular fiber type II; Atrophy; Myosin; Gastrocnemius muscle; Microgravity; NASA Experiment Number 8913020 1/2; NASA Discipline Musculoskeletal; Non-NASA Center

1  Department of Biology, Marquette University, Milwaukee 53201; 2  Department of Cellular Biology and Anatomy, Medical College of Wisconsin, Milwaukee, Wisconsin 53226; and 3  Human Performance Laboratory, Ball State University, Muncie, Indiana 47306 The purpose of this investigation was to study t...