低强度卧推加压训练对肌肉激活程度和主观疲劳度的影响

doi:10.15942/j.jcsu.2022.02.020

Abstract

Abstract: Objective: To study the acute effects of low-intensity bench press KAATSU training on the degree of muscle activation of upper limb and pectoralis major muscle, and the rating of perceived exertion. Methods: Ten college basketball players were recruited to practice bench press in four groups under KAATSU and non-KAATSU. The first group repeated 30 times and the rest 15 times. The load weight was 30%1 RM. Special KAATSU training equipment was used to fix the pressurized belt at the proximal end of upper limb, the binding pressure was set at 30 mmHg, and the pneumatic pressure was set at 160 mmHg. Four tests were conducted before and after the implementation of the KAATSU training programme. During the process, the surface EMG signals of right biceps, triceps, anterior deltoid and pectoralis major were collected and the RMS and MF values were calculated. Meanwhile, rating of perceived exertion was tested after KAATSU training in each group. Results: (1) After the implementation of the training programme, the growth rate of upper limb circumference in the pressurized group was significantly higher than that in the non-KAATSU group (P<0.01); (2) The RMS of maximal autonomic contraction of triceps brachii and pectoralis major in the KAATSU group was significantly higher than that in the non-KAATSU group (P<0.05); (3) the RMS values of triceps brachii, anterior deltoid muscle and pectoralis major in the KAATSU group were significantly higher than that in the non-KAATSU group after the training and after the decompression (P<0.05); (4) the RMS values of biceps brachii and triceps brachii in the second to fourth group, anterior deltoid muscle in the fourth group, and pectoralis major in the third and fourth groups were significantly higher than those in the non-KAATSU group (P<0.05); (5) the rating of perceived exertion after exercise and decompression in the four groups was significantly higher than that in the non-KAATSU group (P<0.05). Conclusion: Low-intensity KAATSU bench press training can significantly improve the activation degree of triceps brachii, deltoid anterior bundle and pectoralis major, and the EMG activity during training is enhanced through the synergistic action of limb muscles and trunk muscles. The rating of perceived exertion in low-intensity bench press KAATSU training is more intense and the upper limb circumference increases significantly in low-intensity bench press KAATSU training.

Key words: bench press KAATSRU training, blood flow restriction, degree of muscle activation, rating of perceived exertion, cute effect, exercise physiology

CLC Number:

G804.49

CHE Tongtong, LI Zhiyuan, ZHAO Zhiguang, WEI Wenzhe, SUN Ke, CHEN Chong. Effect of Low-intensity Bench Press KAATSU Training on Degree of Muscle Activation and Rating of Perceived Exertion[J]. Journal of Chengdu Sport University, 2022, 48(2): 123-130.

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Effect of Low-intensity Bench Press KAATSU Training on Degree of Muscle Activation and Rating of Perceived Exertion

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