Aerobic performance capacity in athletes

European Journal of Applied PhysiologyPublished 1 January 1978

Heikki Rusko, Matti Havu, Esko Karvinen

DOI10.1007/bf00421531

Source URL

Citations108

SJR quartileQ1

SJR score1.06

SNIP1.44

TL;DR

The results suggest that oxidative capacity of the muscles is not the limiting factor for maximal oxygen uptake and thatMaximal oxygen uptake might be the most important determinant of performance when large muscle mass is activated during maximal work of a duration from several minutes up to 1 h (cross-country skiing).

Abstract

Maximal oxygen uptake (max VO2) in leg and arm work, succinate dehydrogenase activity (SDH) and percentage of slow twitch fibers (%ST fibers) in M. vastus lateralis (VL), M. gastrocnemius c.l. (GL) and M. deltoideus (D) were studied in 89 athletes practising 11 different sport events. It was found that maximal oxygen uptake correlated positively with %ST fibers and SDH activity in M. VL. The SDH activity and %ST fibers in M. VL correlated also with one another. The results suggest that oxidative capacity of the muscles is not the limiting factor for maximal oxygen uptake. The role of the oxidative capacity of the muscles might be important during submaximal work of long duration and when a relatively small muscle mass is activated (long-distance running). MaxVO2 might be the most important determinant of performance when large muscle mass is activated during maximal work of a duration from several minutes up to 1 h (cross-country skiing).

Keywords

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