《中国康复理论与实践》 ›› 2022, Vol. 28 ›› Issue (7): 848-854.doi: 10.3969/j.issn.1006-9771.2022.07.017

• 应用研究 • 上一篇    下一篇

18~22岁女性Y平衡测试的下肢表面肌电和姿势稳定性特征

黄兆欣,李磊,钟嘉敏,郭存洋,张利强,程宗申,肖晓飞()   

  1. 滨州医学院康复医学院,山东烟台市 264003
  • 收稿日期:2022-03-24 修回日期:2022-07-11 出版日期:2022-07-25 发布日期:2022-08-08
  • 通讯作者: 肖晓飞 E-mail:xxf1013@126.com
  • 作者简介:黄兆欣(1997-),女,汉族,山东菏泽市人,硕士研究生,主要研究方向:运动生物力学。|肖晓飞(1980-),男,汉族,山东荣成市人,博士,副教授,主要研究方向:ICF应用、康复科学。
  • 基金资助:
    山东省大学生创新创业训练计划项目(S202110440102);山东省自然科学基金项目(ZR2018LA011)

Characteristics of surface electromyography and postural stability of lower limb muscles in Y-balance test in females aged 18 to 22 years

HUANG Zhaoxin,LI Lei,ZHONG Jiamin,GUO Cunyang,ZHANG Liqiang,CHENG Zongshen,XIAO Xiaofei()   

  1. School of Rehabilitation Medicine, Binzhou Medical University, Yantai, Shandong 264003, China
  • Received:2022-03-24 Revised:2022-07-11 Published:2022-07-25 Online:2022-08-08
  • Contact: XIAO Xiaofei E-mail:xxf1013@126.com
  • Supported by:
    Shandong Innovation and Entrepreneurship Training Program for College Students(S202110440102);Shandong Natural Science Foundation(ZR2018LA011)

摘要:

目的 探究Y平衡测试时下肢肌肉肌电特征和姿势稳定性,以及两者间的关系。

方法 2021年10月至11月,招募滨州医学院18~22岁女性大学生26例完成Y平衡测试,同步采集支撑腿股直肌、股二头肌、胫前肌和腓肠肌外侧表面肌电,计算均方根(RMS)、积分肌电值(iEMG)和肌肉贡献率;三维测力平台测试支撑腿压力中心(COP)总轨迹长、前后(A/P)和内外侧(M/L)轨迹长。

结果 Y平衡测试的3个方向中,股直肌RMS均最大(χ2 > 56.952, P < 0.001),胫前肌iEMG、肌肉贡献率最大(χ2 > 38.507, P < 0.001);前侧时各轨迹长最短(P < 0.05);前侧时,COP总轨迹长与股二头肌iEMG (r = 0.452, P = 0.02)和腓肠肌iEMG (r = 0.397, P = 0.045)正相关;后内侧时,COP总轨迹长度与腓肠肌iEMG正相关(r = 0.478, P = 0.014);后外侧时,COP总轨迹长度与胫前肌iEMG正相关(r = 0.437, P = 0.026)。

结论 Y平衡测试3个方向中,支撑腿股直肌、胫前肌和腓肠肌激活较为显著,不同肌电信号特征有所不同;姿势稳定性后外侧时最优;不同方向下,关节伸肌或屈肌对保持动态姿势稳定性的重要性不同。

关键词: Y平衡测试, 肌电图, 姿势稳定性

Abstract:

Objective To investigate the characteristics of electromyography (EMG) and postural stability of lower limb muscles during Y-balance test (YBT) and their relationship.

Methods From October to November, 2021, a total of 26 female students aged 18 to 22 years were recruited from Binzhou Medical University to complete YBT; while the EMG of rectus femoris, biceps femoris, tibialis anterior and gastrocnemius of supporting legs were collected synchronously to measure root mean square (RMS), integral electromyography (iEMG), and muscle contribution rate; and the postural stabilities were measured with three-dimensional force platform, to record total, antero-posterior (A/P) and medio-lateral (M/L) path length of center of pressure (COP).

Results In three directions of YBT, the RMS of rectus femoris was the most (χ2 > 56.952, P< 0.001), and the iEMG and contribution rate of the tibialis anterior were the most (χ2 > 38.507, P < 0.001). All the path length of COP was the shortest in the anterior (P < 0.05). In the anterior, the total path length of COP correlated with iEMG of biceps femoris (r = 0.452, P = 0.02) and gastrocnemius (r= 0.397, P = 0.045); in the postero-medial, the total path length of COP correlated with iEMG of gastrocnemius (r= 0.478, P= 0.014); and in the postero-lateral, the total path length of COP correlated with iEMG of tibialis anterior (r = 0.437, P = 0.026).

Conclusion For YBT, the activation of rectus femoris, tibialis anterior and gastrocnemius muscles of supporting legs are significant, and different with the indicators of EMG. Postural stability is the best in the posterolateral. The joint extensors or flexors play a different role for dynamic postural stability in the different directions.

Key words: Y-balance test, electromyography, postural stability

中图分类号: