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Biology of VO2max: looking under the physiology lamp

期刊

ACTA PHYSIOLOGICA
卷 220, 期 2, 页码 218-228

出版社

WILEY
DOI: 10.1111/apha.12827

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exercise; genetics; mitochondria; non-responders; performance; red blood cell volume

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In this review, we argue that several key features of maximal oxygen uptake (VO(2)max) should underpin discussions about the biological and reductionist determinants of its interindividual variability: (i) training-induced increases in VO(2)max are largely facilitated by expansion of red blood cell volume and an associated improvement in stroke volume, which also adapts independent of changes in red blood cell volume. These general concepts are also informed by cross-sectional studies in athletes that have very high values for VO(2)max. Therefore, (ii) variations in VO(2)max improvements with exercise training are also likely related to variations in these physiological determinants. (iii) All previously untrained individuals will respond to endurance exercise training in terms of improvements in VO(2)max provided the stimulus exceeds a certain volume and/or intensity. Thus, genetic analysis and/or reductionist studies performed to understand or predict such variations might focus specifically on DNA variants or other molecular phenomena of relevance to these physiological pathways.

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