Key result
Changes in intercapillary distances and capillary supply do not consistently correlate with improvements in maximal cardiac and skeletal muscle performance.
The relationship between capillary diffusion distances and muscle performance is complex, as shortened distances do not always guarantee improved performance.
Challenges capillary supply as a consistent performance limiter; leaves open the primary determinants of maximal cardiac and skeletal muscle output.
Intercapillary distances are considered an important indicator of oxygen delivery to tissue. In this article, various indices of capillary supply to cardiac and skeletal muscle are related to the performance of the same organ. It becomes apparent that there are several situations in which maximal muscle performance is not improved, although intercapillary distances are shortened, implying greater potential oxygen delivery. On the other hand, there are also cases where performance is improved without any change in capillary supply.
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Hudlická et al. (1988) conducted a review in Cardiac and skeletal muscle performance. Intercapillary distances was evaluated on Maximal muscle performance. Changes in intercapillary distances and capillary supply do not consistently correlate with improvements in maximal cardiac and skeletal muscle performance.
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