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KMID : 0361419960200030721
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Journal of Korean Academy of Rehabilitation Medicine
1996 Volume.20 No. 3 p.721 ~ p.727
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Total Work and Cardiovascular Response to Isokinetic Contraction at the Knee Joint
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Abstract
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This study was to investigate the blood pressure and heart rate response to isokinetic contraction at the knee joint. The subjects(n=30) performed unilateral knee extension/flexion contraction at 60˚/sec(4repitition), 180˚/sec(4repitition) and
180˚/sec(20repitition).
The heart rate and blood pressure were measured at rest and following contraction completion at immediate. 1 and 3 minutes. In response to isokinetic contraction, heart rate was increased significantly(p<0.001). The mean increment ratio for
heart
rate
was meaningful different in all test methods(p<0.01). In addition, increment ratio for systolic blood pressure notable increased in 180˚/sec(20repitition) compared with 180˚/sec(4repitition)(p<0.01). Findings from the present study suggest that
cardiovascular stress(the increase in heart rate and blood pressure associated with isokinetic contraction is proportional to amount of total work).
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