Abstract
104 Five weeks of isometric training affects some cardiovascular responses to aerobic exercise in mildly hypertensive individuals. The training group (N=9; mean age 41 ± 2 yr) did isometric training using a handgrip dynamometer at 50% maximum voluntary contraction (MVC) for 3 minutes four times a week for five weeks. The remaining subjects (N=10; mean age 38 ± 2) served as controls. Peak systolic (161 ± 8 mmHg), diastolic (86 ± 5 mmHg), and mean arterial (112 ± 5 mmHg) pressure responses to aerobic testing decreased significantly (p < .05) after 5 weeks of isometric training. No significant changes were seen in heart rate. Resting blood pressure was also significantly (p < .05) reduced in the training group, whereas no significant changes were found in the control group. Thus, a hypotensive effect of isometric handgrip training at 50% MVC on dynamic performance was confirmed in mildly hypertensive individuals.
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