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Muscle strength and fiber composition in athletes and sedentary men.
Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences, Laboratory for Biomechanics and Motor Control.
1977 (English)In: Medicine and science in sports, ISSN 0025-7990, Vol. 9, no 1, 26-30 p.Article in journal (Refereed) Published
Abstract [en]

Members of Swedish national teams in track and field events (sprinting and jumping), downhill skiing, race walking, orienteering, and a group of sedentary men were studied to examine the relationship between muslce fiber characteristics in needle biopsy samples form m. vastus lateralis and muscle strength measured as peak torque during isokinectic knee extensions. In comparison with the sedentary group the following differences were found: a) percentage fast twitch fibers was lower in the endurance athetes, b) fast to slow twitch muscle fiber area ratio was higher in the track athletes, c)track athletes and downhill skier attained higher peak torque values at all angular velocities examined. The track athletes had, however, higher torque values at the fastest angular velocity as compared to the downhill skiers, whereas there was no differnce under isometric conditions. The proportion of fast twitch fibers was related to torque produced, especially at high motion velocity. The training also appeared to affect the force-velocity relationship.

Place, publisher, year, edition, pages
1977. Vol. 9, no 1, 26-30 p.
Identifiers
URN: urn:nbn:se:gih:diva-589PubMedID: 870781OAI: oai:DiVA.org:gih-589DiVA: diva2:173730
Available from: 2009-02-17 Created: 2009-02-16 Last updated: 2011-05-03Bibliographically approved

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