ABSTRACT
Resistance training increases strength and stamina without enlarging muscle. Jaras ifg1 responsible for the proliferation and differentiation of muscle tissue in response to the exercise. Post-allocation of adaptation 36 research subjects were randomly allocated to the control group and the test. The purpose of this study to determine the effect of prolonged hanging test of grip strength, muscle mass changes and IGF-1r imunoekspresi the bicep muscles of mice. The uniqueness differences in physiological mechanisms increase the strength after resistance exercise through changes in the dynamics of unknown IGF1 receptors , so this time we did the study increased expression of IGF1 receptors (Igf1r) after resistance exercise, using new method is prolonged hanging test. Grip strength, muscle mass and score imunoekspresi igf1r in bicep muscles will be tested in the mice model (Swiss webster) using pre and posttest design. Examination of grip strength, muscle mass, muscle fiber cross-sectional diameter and imunoekspresi IGF-1r have done at day 28 in the Laboratory of Pathology in Dr. Hasan Sadikin Hospital, Bandung. Our results showed there were effect of prolonged hanging test to grip strength in the final test on mice and igf1r Imunoekspresi on mice. This research concluded that resistance exercise using hanging prolonged test increases grip strength and receptor expression igf1r without increasing muscle mass or muscle fiber cross-sectional diameter.
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