Muscle performance and enzymatic adaptations to sprint interval training
Department of Kinesiology, McMaster University, Hamilton, Ontario, Canada L8S 4K1 Our purpose was to examine the effects of sprint interval training on muscle glycolytic and oxidative enzyme activity and exercise performance. Twelve healthy men (22 ± 2 yr of age) underwent intense interval training...
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Published in | Journal of applied physiology (1985) Vol. 84; no. 6; pp. 2138 - 2142 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Bethesda, MD
Am Physiological Soc
01.06.1998
American Physiological Society |
Subjects | |
Online Access | Get full text |
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Summary: | Department of Kinesiology, McMaster University, Hamilton, Ontario,
Canada L8S 4K1
Our purpose was to examine the effects of sprint
interval training on muscle glycolytic and oxidative enzyme activity
and exercise performance. Twelve healthy men (22 ± 2 yr of age)
underwent intense interval training on a cycle ergometer for 7 wk.
Training consisted of 30-s maximum sprint efforts (Wingate protocol)
interspersed by 2-4 min of recovery, performed three times per
week. The program began with four intervals with 4 min of recovery per
session in week 1 and progressed to 10 intervals with 2.5 min of recovery per session by week
7 . Peak power output and total work over repeated maximal 30-s efforts and maximal oxygen consumption
( O 2 max ) were
measured before and after the training program. Needle biopsies were
taken from vastus lateralis of nine subjects before and after the
program and assayed for the maximal activity of hexokinase, total
glycogen phosphorylase, phosphofructokinase, lactate dehydrogenase, citrate synthase, succinate dehydrogenase, malate dehydrogenase, and
3-hydroxyacyl-CoA dehydrogenase. The training program resulted in
significant increases in peak power output, total work over 30 s, and
O 2 max . Maximal
enzyme activity of hexokinase, phosphofructokinase, citrate synthase,
succinate dehydrogenase, and malate dehydrogenase was also
significantly ( P < 0.05) higher
after training. It was concluded that relatively brief but intense
sprint training can result in an increase in both glycolytic and
oxidative enzyme activity, maximum short-term power output, and
O 2 max .
Wingate protocol; muscle biopsy; glycolytic enzymes; oxidative
enzymes |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 8750-7587 1522-1601 |
DOI: | 10.1152/jappl.1998.84.6.2138 |