Analysis of waist and abdomen muscle strength training effects based on muscle strength and surface electromyography
10.3760/cma.j.cn113854-20210717-00103
- VernacularTitle:基于肌力和表面肌电的腰腹部训练效果分析
- Author:
Haixia WANG
1
;
Yan XU
1
;
Xichen GENG
1
;
Rong LIN
1
;
Zhao JIN
1
;
Hong WANG
1
;
Xiaoyang WEI
1
;
Jinghui YANG
1
;
Minghao YANG
1
;
Lihui ZHANG
1
;
Xiaoxue ZHANG
1
;
Baohui LI
1
Author Information
1. 空军特色医学中心加速度生理研究室，北京 100142
- Publication Type:Journal Article
- Keywords:
Waist and abdomen;
Strength training;
Surface electromyographic signal;
Erector spine
- From:
Chinese Journal of Aerospace Medicine
2021;32(4):204-210
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To explore the training methods of strengthening pilots′ waist and abdomen muscle strength free-standing exercises and simple equipment (sandbag, weight plates, Roman chair, etc.) exercises.Methods:Eight healthy male volunteers were trained 3 times a week for 3 months and 1.0-1.5 h each time by using the methods of flying like swallows, curling up the abdomen, swinging legs in supine position, using Roman chair and so on. The improvement project was changed every 4 weeks. The pre-and post-tests consisted of waist and abdomen maximum muscle torque (MMT), 10 s torque equivalent (10 s TE) and the surface electromyography signal of erector spine in the forward flexion, back extension, left and right rotation by using the maximum isometric static muscle strength test method. Furthermore, the multi-step endurance test method was used to test the volunteers′ lumbar and abdominal muscles endurance, including the total torque equivalent (TTE), endurance time and the surface electromyography signal of erector spine in the forward flexion and back extension. The software package SPSS 18.0 was applied for self-contrasted t-test.Results:After 3 months systematic training, the MMT of 8 volunteers increased by 24.99%, 27.55%, 82.00% and 47.76% in the forward flexion, back extension, left and right rotation and the 10 s TE increased by 26.05%, 29.43%, 85.64% and 84.59%. They were significantly different from that before in different directions, so was 10 s TE ( t=3.32-20.45, P<0.05). After training, the left and right erector spine′s average electromyography signal increased significantly ( t=4.30, 9.81, P<0.01) in the back extension and the values were 73.73% and 101.21%, however, they didn′t increased so much in the other 2 directions. In the meantime, the median frequency (MF) in 3 directions changed little under the premise of a significant increase in 10 s TE. The TTE increased by 36.28% and 52.03% in the forward flexion and back extension compared with that before training, the differences were statistically significant ( t=1.24, 1.13, P<0.05), although the endurance time and the MF in the last step did not significantly change while the total training load increased. Conclusions:The effects of the waist and abdomen training based on free-standing exercises and simple equipment are effectual. After training, the volunteers′ muscle strength and endurance increased significantly and the anti-fatigue ability of muscles was enhanced. The training method is simple and easy to carry out in the flying troops.
