| 英文摘要 |
Introduction: The occlusion training is to use the appropriate pressure combined with relatively low intensity exercise training, it could achieve a similar effect as the high intensity training. The purpose of this study was to compare the 8 weeks of different occlusion pressures and intensities of resistance training on leg’s muscle mass, lower limb isokinetic muscular strength and jump performance. Methods: 20 untrained students were randomly divided into low occlusion combined with high intensity resistance training [LOHR, 0.7 systolic blood pressure (SBP) + 70% 1RM] and high occlusion combined with low intensity resistance training (HOLR；1.7 SBP + 40% 1RM). The training was 3 days per week, 5 sets a day, 12 repetitions per set. And perform the physiological assessment before and after the training. Data were analyzed by using mixed design of two-way ANOVA to test the difference within and between groups. Results: The leg muscle mass in LOHR training was significantly increased after training (occlusion and non-occlusion before training: 8.4 ± 0.89, 8.5 ± 0.86；after training : 8.7 ± 0.88, 8.7 ± 0.90 kg, respectively), and the LOHR was not increase significantly；there were no significant difference between the two groups. The muscle damage indicator CK was only significantly higher in the 4th week than post-test in HOLR group. The 1RM of leg press was significantly improved in both groups. ( LOHR and HOLR before training: 256.7 ± 76.97, 267.3 ± 72.26；after training : 352.2 ± 107.53, 340.5 ± 87.59 kg, respectively) Furthermore, the peak torque of isokinetic muscle strength of 60o．S-1 knee flexion with occlusion, 180o．S-1 knee flexion with occlusion and 180o．S-1 knee extension without occlusion were significantly better than pre-test in LOHR group, whereas the isokinetic of 60o．S-1 and 180o．S-1 knee extension and flexion were significantly higher than pre-test in HOLR group. The jumping performance on the two groups, the CMJ and SJ jump height and flight time performance were superior to the pre-test in two groups, and there was no significant differences between the two groups. (jump height of CMJ before training: 40.6 ± 3.13, 36.4 ± 5.96；after training : 44.2 ± 4.73, 40.6 ± 6.22 cm ; flight time of CMJ before training: 574.9 ± 22.43, 543.0 ± 44.77；after training : 599.4 ± 33.11, 573.0 ± 45.58 ms ; jump height of SJ before training: 41.1 ± 4.12, 36.7 ± 7.60；after training : 46.2 ± 5.79, 42.5 ± 7.56 cm; flight time of SJ before training: 575.2 ± 30.63, 544.5 ± 58.14；after training : 609.3 ± 41.47, 586.5 ± 55.69 ms, LOHR and HOLR respectively) Conclusions : LOHR’s leg muscle mass was increased significant and the isokinetic muscle strength was better in the occlusion limb. The HOLR group with positive effect on both legs’ muscular strength. In addition, the training program were able to improve jumping performance effectively. The training benefit may due to the resistance training, and the training effects of occlusion was restricted. |
