To examine whether forearm vascular adaptations could occur after upright-leg exercise training, the reactive hyperemic blood flow after 10 min of forearm circulatory arrest (RHBF10) was studied. RHBF10 was examined in seven subjects before, at 2 wk, and after the completion of 4 wk of bicycle ergometer training. Maximal O2 consumption (V̇O(2max)) for leg ergometer work increased 13% (P < 0.05) over 4 wk. Over that period of time RHBF10 in the forearm increased 50% (P < 0.05), with a reciprocal drop in minimum vascular resistance. Resting heart rate decreased 15% (P < 0.05) during the same period. Changes in RHBF10 and V̇O(2max) were noted after 2 wk of training. Mean arterial pressure did not change. We conclude that vascular adaptations can occur in the forearm muscle beds, even though the training regimen is designed to condition the lower extremities.
All Science Journal Classification (ASJC) codes
- Physiology (medical)