Muscle metabolism during 30, 60 and 90 s of maximal cycling on an air-braked ergometer

Autor: Withers, R. T., Sherman, W. M., Clark, D. G., Esselbach, P. C., Nolan, S. R., Mackay, M. H., Brinkman, M.
Zdroj: European Journal of Applied Physiology; November 1991, Vol. 63 Issue: 5 p354-362, 9p
Abstrakt: This study examined the anaerobic and aerobic contributions to muscle metabolism during high intensity short duration exercise. Six males [mean (SD): age 25.0 (6.0) years, height 179.0 (8.2) cm, mass 70.01 (7.42) kg, $$\dot VO_{2max}$$ 4.63 (0.53) 1 · min-1, body fat 12.7 (2.3)%] performed three counterbalanced treatments of 30, 60 and 90 s of maximal cycling on an air-braked ergometer. All treatments were also performed on days when biopsies were not taken from the vastus lateralis muscle and cannulae not inserted into a forearm vein to ascertain whether these procedures adversely affected performance. The mean results can be summarised as follows: a Homogenate from vastus lateralis muscle; wm, wet muscle; b biopsies taken from vastus lateralis muscle and cannula inserted into forearm vein; c noninvasive procedures ATP, Adenosine 5'-triphosphate; PC, phosphocreatinine
Databáze: Supplemental Index
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