The energetics of anaerobic muscle metabolism: a reappraisal of older and recent concepts

被引:293
作者
di Prampero, PE
Ferretti, G
机构
[1] Ctr Med Univ Geneva, Dept Physiol, CH-1211 Geneva 4, Switzerland
[2] Univ Udine, Dipartimento Sci & Tecnol Biomed, I-33100 Udine, Italy
来源
RESPIRATION PHYSIOLOGY | 1999年 / 118卷 / 2-3期
关键词
exercise; energetics; lactic acid; removal; energy equivalent; mammals; humans; muscle; skeletal; oxygen; debt;
D O I
10.1016/S0034-5687(99)00083-3
中图分类号
Q4 [生理学];
学科分类号
071003 ;
摘要
This paper discusses under an energetic perspective the recent and older evidence supporting the classical notion that the 'oxygen debt', as originally defined by Margaria et al. (1933) [Am. J. Physiol. 106, 689-714], consists of two major components: the alactic oxygen debt, with a half-time of the order of 30 sec, and the lactic oxygen debt, with a much longer half-time, similar to that of lactic acid removal from blood after exercise (approximate to 15 min). In particular, two ensuing concepts are treated, namely (i) the energetic equivalent of blood lactate accumulation in blood, whence the notions of lactic power and lactic capacity, and (ii) the energy sources allowing contraction of the oxygen deficit at the onset of square-wave exercise. The notion of alactic oxygen deficit is rediscussed on the basis of recent evidence in humans. The analogies between lactate accumulation during supramaximal exercise and during exercise transients are discussed under an energetic perspective. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:103 / 115
页数:13
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