Short-term handgrip exercise training at low or high intensity significantly increased forearm blood flow following occlusion, with no significant difference between intensity groups (p=0.632).
Does short-term handgrip exercise training improve localized vascular function in healthy men?
Short-term handgrip exercise training improves unilateral vasodilatory responsiveness in healthy men, with the degree of improvement appearing independent of the training intensity.
Absolute Event Rate: 20.72% vs 16.51%
p-value: p=0.632
This study examined the effect of low (25% of maximum voluntary contraction) and high (75% of maximum voluntary contraction) intensity short-term handgrip exercise training on localized vascular function. Forearm blood flow was evaluated in twenty-eight healthy men (age: 23 +/- 4.3) pre- and post-training in both forearms at rest, following forearm occlusion and following forearm occlusion combined with handgrip exercise using strain gauge plethysmography. The 4-week program consisted of non-dominant handgrip exercise performed 5 d/wk for 20 min at either low or high intensity. Following training a significant increase in forearm blood flow was noted for the nondominant arm in both groups after forearm occlusion (low intensity group: 16.51%; high intensity group: 20.72%; p = 0.001) and forearm occlusion combined with handgrip exercise (low intensity group: 17.71%; high intensity group: 29.27%; p = 0.001). No significant group by test interaction (p = 0.632) was found. These data show improved unilateral vasodilatory responsiveness after short-term handgrip training. In addition, the degree of change is most notable following the greatest vasodilatory stimulus. Lastly, a lack of group by treatment interaction suggests the change may be independent of training stimulus.
Alomari et al. (2001) studied Healthy (n=28). Handgrip exercise training vs. Low intensity (25% of maximum voluntary contraction) handgrip exercise was evaluated on Increase in forearm blood flow after forearm occlusion (p=0.632). Short-term handgrip exercise training at low or high intensity significantly increased forearm blood flow following occlusion, with no significant difference between intensity groups (p=0.632).