Effect of training on muscle metabolism during treadmill sprinting

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Nevill, M.E. ORCID: 0000-0003-2498-9493, Boobis, L.H., Brooks, S. and Williams, C., 1989. Effect of training on muscle metabolism during treadmill sprinting. Journal of Applied Physiology, 67 (6), pp. 2376-2382. ISSN 8750-7587

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Official URL: https://doi.org/10.1152/jappl.1989.67.6.2376

Abstract

Sixteen subjects volunteered for the study and were divided into a control (4 males and 4 females) and experimental group (4 males and 4 females, who undertook 8 wk of sprint training). All subjects completed a maximal 30-s sprint on a nonmotorized treadmill and a 2-min run on a motorized treadmill at a speed designed to elicit 110% of maximum oxygen uptake (110% run) before and after the period of training. Muscle biopsies were taken from vastus lateralis at rest and immediately after exercise. The metabolic responses to the 110% run were unchanged over the 8-wk period. However, sprint training resulted in a 12% (P less than 0.05) and 6% (NS) improvement in peak and mean power output, respectively, during the 30-s sprint test. This improvement in sprint performance was accompanied by an increase in the postexercise muscle lactate (86.0 +/- 26.4 vs. 103.6 +/- 24.6 mmol/kg dry wt, P less than 0.05) and plasma norepinephrine concentrations (10.4 +/- 5.4 vs. 12.1 +/- 5.3 nmol/l, P less than 0.05) and by a decrease in the postexercise blood pH (7.17 +/- 0.11 vs. 7.09 +/- 0.11, P less than 0.05). There was, however, no change in skeletal muscle buffering capacity as measured by the homogenate technique (67.6 +/- 6.5 vs. 71.2 +/- 4.5 Slykes, NS).

Item Type:

Journal article

Publication Title:

Journal of Applied Physiology

Creators:

Nevill, M.E., Boobis, L.H., Brooks, S. and Williams, C.

Publisher:

American Physiological Society

Date:

1 December 1989

Volume:

Number: