Abstract
Postischaemic reactive hyperaemia in the calf was investigated by strain gauge plethysmography in three pairs of trained and untrained groups of different ages. Maximal flow and repayment in the trained adults were greater than in corresponding untrained groups. This may be due to training effect on the arterioles and a relatively great muscle volume and vascular bed in athletes. The 58-year-old trained men revealed a postischaemic hyperaemic response of approximately the same magnitude as the 25-year-old athletes. Training in old age may result in less degeneration of vascular smooth muscle as well as striated muscle and may induced a relatively great cardiac stroke volume, factors which probably influence reactive hyperaemia in the calf. Hyperaemia in 13-year-old children of different conditions of training was approximwtely the same. It is concluded that the influence of training state on postischaemic calf flow may be considered when reactive hyperaemia is used as a test of the peripheral circulation.
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