Occupational Work Assessment
نویسنده
چکیده
Static and dynamic work involving the arms and the legs was performed by 40 men seven weeks after myocardial infarction. Leg ergometry produced a significantly higher peak work load, systolic blood pressure (BPs), heart rate (HR), and HR X BPs X 10-2 product (DP) than did arm ergometry: 842 ± 178 vs 546 ± 135 kg-m/min, 176 ± 24 vs 154 ± 19 mm Hg and 256 ± 54 vs 219 ± 48 (SD). Peak heart rates were 145 and 142. Endpoints were primarily muscular and generalized fatigue and dyspnea. Ischemic abnormalities and ventricular ectopy were more frequent with leg ergometry. Sustained forearm lifting elicited higher HR, BPs and DP responses than sustained handgrip contraction: 95 ± 16 vs 91 ± 16 beats/min, 162 ± 18 vs 152 ± 17 mm Hg and 154 ± 33 vs 139 ± 33 (SD). Ischemic ST segment depression and significant ventricular arrhythmias were infrequent with static effort. Dynamic leg testing is superior to dynamic or static
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