Abstract
To assess the cardiorespiratory, hemodynamic, and electrocardiograph (ECG) responses to an upper body exercise device, we studied ten cardiac men (mean age +/- SD = 58.0 +/- 6.5 years) who performed three five-minute exercise bouts at metronome settings of 20, 50, and 80 clicks per minute. Operation of the device involved shuttling a plastic buoy on two 6-m waxed ropes between two persons. Aerobic requirements were generally appropriate for arm training, corresponding to mean values of 5.3, 7.0, and 10.1 ml.kg-1.min-1 at the three progressive metronome settings. Perceived exertion (Borg, 6 to 20 scale) at these work rates was 8.3, 10.4, and 14.6, whereas average heart rate and systolic blood pressure responses were 77, 85, and 114 beats.min-1 and 145, 158, and 175 mmHg, respectively. Continuous ECG monitoring during upper body exercise revealed no significant ST-segment depression or serious arrhythmias. The device appears to be a safe and effective complement to a cardiac exercise training program.
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