The purpose of this study was to investigate isokinetic values and cardiovascular responses of hip abductors and adductors in 34 normal untrained subjects(age 26.7*3.1; female 17, male 17) at rest and during separate session of upright and
side-lying
isokinetic exercises at angular velocity of 30*/sec using isokinetic dynamometer, Cybex 6000.
@ES The results were as follows;
@EN 1) The peak isokinetic torque ratio of hip adductors to abductors in upright exercise was 122.8*14.2%, and 85.3*12.6% in side-lying exercise which showed a significant difference in torque values according to positions(p<0.01).
2) Angle of peak torque occurred in upright and side-lying exercises for hip adductors were 29.0*5.3* and 27.9*6.5* respectively, and for hip abductors -0.2*3.1* and -1.7*3.6* respectively which did not show any significant difference between
upright
and side-lying positions of isokinetic exercise
3) Heart rate and diastolic blood pressure measured at rest showed a difference between upright and side-lying positions at rest(p<0.01).
However, systolic pressure at rest did not show any significant difference between upright and side-lying positions of isokinetie exercise(p<0.01)
4) In the upright exercise, the increment ratio of heart rate, systolic, and diastolic blood pressures obtained were found to be higher than in the side-lying exercise(p<0.01).
These findings indicate that upright isokinetic exercise of hip abductors and adductors produces a higher afterload than the side-lying maneuver and different positions of exercise may affect isokinetic peak torque values as well.
Therefore, these variables must be considered when prescribing a isokinetic exercise of hip abductor and adductor muscles.
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