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Aerobic and glycolytic metabolism in arm exercise

Aerobic and glycolytic metabolism in arm exercise in of New York at Buffalo, D. P. Department of Physiology, School of Medicine, Buffalo, New York 14214 D. W. State University D.,P. D.W. . Aerobic glycolytic metabolism in . J. Appl. Whysiol.: Respirat. Environ. Physiol. 47(4): 754-760,1979.Eight kayakers (K) 3 sedentary subjects (S) performed cranking pedaling while erect or supine at each of several work loads from submaximal to the highest they could sustain for 2 min for intervals varying from 10 s to 5 min. From measurements of Vos blood lactate concentration, the aerobic glycolytic energy release in work was assessed. For steady-state aerobic work all subjects had a mechanical efficiency averaging 0.24 independent of posture or mode. Per unit fat-free limb volume, VOW I,,EiX group K of was 1.5-fold that of group S, whereas leg VOW lf,aXwas the same in each group. Compared to group S, glycolytic work in group K was characterized by: 1) higher thresholds for release of lactate at the onset of submaximal work, 2) lower blood lactate concentrations during comparable absolute or relative submaximal work, 3) higher conventional anaerobic thresholds for absolute, but not relative work loads, 4) higher maximal rates of lactate release, 5) the same maximal blood lactate concentrations. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Applied Physiology The American Physiological Society

Aerobic and glycolytic metabolism in arm exercise

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Publisher
The American Physiological Society
Copyright
Copyright © 1979 the American Physiological Society
ISSN
8750-7587
eISSN
1522-1601
Publisher site
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Abstract

in of New York at Buffalo, D. P. Department of Physiology, School of Medicine, Buffalo, New York 14214 D. W. State University D.,P. D.W. . Aerobic glycolytic metabolism in . J. Appl. Whysiol.: Respirat. Environ. Physiol. 47(4): 754-760,1979.Eight kayakers (K) 3 sedentary subjects (S) performed cranking pedaling while erect or supine at each of several work loads from submaximal to the highest they could sustain for 2 min for intervals varying from 10 s to 5 min. From measurements of Vos blood lactate concentration, the aerobic glycolytic energy release in work was assessed. For steady-state aerobic work all subjects had a mechanical efficiency averaging 0.24 independent of posture or mode. Per unit fat-free limb volume, VOW I,,EiX group K of was 1.5-fold that of group S, whereas leg VOW lf,aXwas the same in each group. Compared to group S, glycolytic work in group K was characterized by: 1) higher thresholds for release of lactate at the onset of submaximal work, 2) lower blood lactate concentrations during comparable absolute or relative submaximal work, 3) higher conventional anaerobic thresholds for absolute, but not relative work loads, 4) higher maximal rates of lactate release, 5) the same maximal blood lactate concentrations.

Journal

Journal of Applied Physiology – The American Physiological Society

Published: Oct 1, 1979

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