Effect of Strength Training of Hip Muscles on Functional Ankle Instability: Evaluated with Surface Electromyography
10.3969/j.issn.1006-9771.2021.08.008
- VernacularTitle:髋周肌群力量训练对功能性踝关节不稳的疗效及表面肌电评价
- Author:
Mei-ying ZHANG
1
;
Lei ZHAO
1
;
Hui LI
2
;
Ying-ying WANG
3
;
Shi-you DAI
1
Author Information
1. Department of Osteoarthrology and Sports Medicine, Qingdao Municipal Hospital, Qingdao, Shandong 266000, China
2. Ultrasound Department, the Second Maternal and Child Health Care Hospital, Ji'nan, Shandong 250000, China
3. Department of Rehabilitation Medicine, Qingdao Municipal Hospital, Qingdao, Shandong 266000, China
- Publication Type:Research Article
- Keywords:
functional ankle instability;
hip muscles;
surface electromyography;
integrated electromyography;
ankle joint;
gluteus medius;
gluteus maximus
- From:
Chinese Journal of Rehabilitation Theory and Practice
2021;27(8):936-942
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the effect of strength training of hip muscles on functional ankle instability (FAI), and be evaluated with surface electromyography (sEMG). Methods:From January, 2019 to June, 2020, 60 FAI patients were recruited in Qingdao Municipal Hospital. They were divided into control group (n = 30) and observation group (n = 30) randomly. The control group received conventional therapy, including ankle joint mobilization training, strength training and balance training for six weeks, while the observation group received strength training of hip muscles in addition. Cumberland Ankle Instability Tool (CAIT), Star Excursion Balance Test (SEBT) and sEMG were used to assess the function before and after intervention, and integrated electromyography (iEMG) was measured with sEMG. The correlation of CAIT and SEBT to iEMG was analyzed with Pearson coefficient. Results:No one dropped out. Before intervention, there was no significant difference between CAIT, SEBT and iEMG between two groups (P > 0.05). CAIT and SEBT improved significantly in both groups (t > 3.657, P < 0.001) after six-week intervention; the iEMG increased significantly in the observation group (t > 22.038, P < 0.001), while no significance was found in the control group (t < 1.916, P > 0.05); all the indexes were better in the observation group than in the control group (t > 2.125, P < 0.05). iEMG of gluteus medius and gluteus maximum correlated to CAIT and SEBT in the observation group (r = 0.712 to 0.866, P < 0.05). Conclusion:The strength training of the hip muscles could improve the ankle function of FAI patients. iEMG of gluteus medius and gluteus maximum could be a valid measure to assess the effect of strength training on FAI.
