健康中老年女性上下楼梯时下肢肌肉的表面肌电图表现

doi:10.3969/j.issn.1006-9771.2023.06.016

Abstract

Abstract:

Objective To observe the lower limb muscle activation strategy of healthy middle-aged and old women during stair ascent and descent with surface electromyography.
Methods From August, 2021 to February, 2022, 20 healthy middle-aged and old women were measured the surface electromyography root mean square (RMS) and integrated electromyography (iEMG) of bilateral vastus lateral, rectus femoris, vastus medialis, biceps femoris and semitendinosus during stair ascent and descent, and co-contraction ratio was calculated.
Results During stair ascent, the RMS of bilateral vastus lateral, rectus femoris and vastus medialis was higher at starting stage than at following stage (|t| > 6.650, P < 0.001), while the RMS of biceps femoris and semitendinosus was lower (t > 3.559, P < 0.01); and the co-contraction ratio of hamstrings/quadriceps was lower at starting stage than at following stage (t > 8.185, P < 0.001). During stair descent, the RMS of bilateral vastus lateral, vastus medialis, biceps femoris and semitendinosus was higher at following stage than at starting stage (t > 2.345, P < 0.05), as well as the co-contraction ratio of hamstrings/quadriceps (t > 2.405, P < 0.05).
Conclusion The activities of the muscles around the knees are almost symmetrical during stair ascent and descent for healthy middle-aged and old women. The activation and co-contraction ratio of quadriceps and hamstring are various at starting/following stages.

Key words: stair climbing, quadriceps, hamstring, surface electromyography

CLC Number:

R694

LI Dan, WANG Jianxiong, HUANG Maomao, XU Fangyuan, ZENG Qiu, LI Jiyang, LI Yang, XIA Cuihong, ZHENG Yadan, XU Zhangyu, FANG Wenfeng, WAN Tenggang. Surface electromyography of lower limb muscles in healthy middle-aged and old women during stair ascent and descent[J]. 《Chinese Journal of Rehabilitation Theory and Practice》, 2023, 29(6): 731-737.

Figures/Tables 4

References 43

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肌肉	启动阶段		跟随阶段		t值^a	P值^a	t值^b	P值^b	t值^c	P值^c	t值^d	P值^d
肌肉	左侧	右侧	左侧	右侧	t值^a	P值^a	t值^b	P值^b	t值^c	P值^c	t值^d	P值^d
股外侧肌	32.29±6.24	35.51±8.74	21.20±6.00	20.68±6.37	1.570	0.133	0.316	0.756	-9.451	< 0.001	-10.780	< 0.001
股直肌	27.53±5.92	25.68±6.34	16.61±5.18	16.73±5.62	-1.468	0.158	-0.099	0.922	-12.526	< 0.001	-8.350	< 0.001
股内侧肌	32.56±9.72	28.71±5.86	18.53±8.51	17.13±6.74	-1.986	0.062	0.718	0.481	-10.090	< 0.001	-6.550	< 0.001
股二头肌	26.46±9.22	21.90±5.70	30.50±10.22	33.58±12.52	-2.495	0.022	-1.012	0.324	1.805	0.087	4.540	< 0.001
半腱肌	26.63±8.23	25.12±7.58	34.76±12.66	33.56±10.98	-0.816	0.425	0.410	0.686	3.559	0.002	5.080	< 0.001

肌肉	启动阶段		跟随阶段		t值^a	P值^a	t值^b	P值^b	t值^c	P值^c	t值^d	P值^d
肌肉	左侧	右侧	左侧	右侧	t值^a	P值^a	t值^b	P值^b	t值^c	P值^c	t值^d	P值^d
股外侧肌/Q	0.35±0.05	0.39±0.05	0.39±0.08	0.38±0.07	3.084	0.006	0.120	0.906	2.805	0.011	-0.906	0.376
股直肌/Q	0.30±0.04	0.28±0.04	0.29±0.04	0.30±0.06	-1.153	0.263	-0.824	0.420	-0.896	0.381	1.570	0.133
股内侧肌/Q	0.35±0.07	0.32±0.05	0.32±0.09	0.31±0.09	-1.939	0.067	0.366	0.719	-2.200	0.040	-0.570	0.575
股二头肌/H	0.50±0.07	0.47±0.09	0.47±0.09	0.49±0.10	-1.332	0.199	-0.898	0.381	-1.461	0.160	1.752	0.096
半腱肌/H	0.50±0.07	0.53±0.09	0.53±0.09	0.51±0.10	1.332	0.199	0.898	0.381	1.461	0.160	-1.752	0.096
H/Q	0.58±0.16	0.54±0.13	1.21±0.38	1.26±0.46	-1.214	0.240	-0.482	0.635	8.185	< 0.001	8.437	< 0.001
M/L	1.03±0.23	0.98±0.27	1.05±0.28	1.01±0.33	-0.835	0.414	0.458	0.652	0.376	0.711	0.851	0.406

肌肉	启动阶段		跟随阶段		t值^a	P值^a	t值^b	P值^b	t值^c	P值^c	t值^d	P值^d
肌肉	左侧	右侧	左侧	右侧	t值^a	P值^a	t值^b	P值^b	t值^c	P值^c	t值^d	P值^d
股外侧肌	20.76±6.31	20.97±5.02	29.20±7.91	27.72±6.91	0.178	0.861	0.710	0.486	5.832	< 0.001	4.133	0.001
股直肌	20.91±6.01	24.51±10.54	22.07±4.52	22.69±7.17	1.807	0.087	-0.389	0.701	0.901	0.379	-0.835	0.414
股内侧肌	23.68±11.74	21.17±9.36	29.04±8.06	27.60±12.07	-2.103	0.049	0.502	0.621	2.345	0.030	3.898	0.001
股二头肌	19.05±7.66	18.26±6.49	27.77±8.23	27.16±10.98	-0.375	0.712	0.284	0.779	5.278	< 0.001	4.756	< 0.001
半腱肌	21.10±9.94	20.69±7.45	33.26±14.00	28.92±8.32	-0.193	0.849	1.419	0.172	4.772	< 0.001	6.659	< 0.001

肌肉	启动阶段		跟随阶段		t值^a	P值^a	t值^b	P值^b	t值^c	P值^c	t值^d	P值^d
肌肉	左侧	右侧	左侧	右侧	t值^a	P值^a	t值^b	P值^b	t值^c	P值^c	t值^d	P值^d
股外侧肌/Q	0.33±0.06	0.33±0.06	0.36±0.05	0.36±0.06	0.008	0.994	0.105	0.917	2.891	0.009	3.864	0.001
股直肌/Q	0.33±0.05	0.36±0.07	0.28±0.05	0.29±0.06	1.839	0.082	-0.958	0.350	-4.341	< 0.001	-5.075	< 0.001
股内侧肌/Q	0.35±0.09	0.32±0.08	0.36±0.07	0.35±0.08	-1.999	0.060	0.658	0.519	0.673	0.509	2.576	0.019
股二头肌/H	0.48±0.07	0.47±0.10	0.47±0.06	0.48±0.10	-0.148	0.884	-0.241	0.812	-0.424	0.676	0.341	0.737
半腱肌/H	0.52±0.07	0.53±0.10	0.53±0.06	0.52±0.10	0.148	0.884	0.241	0.812	0.424	0.676	-0.341	0.737
H/Q	0.64±0.25	0.63±0.26	0.75±0.23	0.73±0.18	-0.118	0.907	0.239	0.814	2.988	0.008	2.405	0.027
M/L	1.14±0.25	1.09±0.33	1.08±0.19	1.07±0.33	-0.758	0.458	0.026	0.980	-1.356	0.191	-0.395	0.698

Surface electromyography of lower limb muscles in healthy middle-aged and old women during stair ascent and descent

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