不同振动条件对慢性下背痛患者腰腹部肌群表面肌电信号的影响

摘要

Objective:To explore the influence of vibration stimulation on chronic low back pain patients lumbo-abdominal major muscles under different vibration stimulation conditions,and to determine the best vibration frequency and location by surface electromyography (sEMG) analysis.Method:sEMG signals from the lumbo-abdominal major muscles of 21 chronic low back pain patients were measured with the MyoResearch XP Master Software Version 1.07.17.Each subjects performed 3 exercises on 0Hz,5Hz,10Hz,15Hz a vibration platform:plank,side stay and the "V" crunch.Result:①The surface electromyography of erector muscles showed significant difference between different exercises (P＜ 0.05).Under plank and "V" crunch,there were significant differences between different frequency (P＜0.05).②The external oblique surface EMG values:in the four case of frequency,there were significant differences between different exercises (P＜0.05).Under plank and side stay conditions,there were significant differences between different frequency (P＜ 0.05).③The surface electromyography of rectus abdominis muscle:there were significant differences between different movements (P＜0.05) under 5Hz and 0Hz.There was no significant difference in frequency between three groups (P＞ 0.05).Conclusion:Different vibration stimulation conditions has different effects on the lumbo-abdominal major muscles in patients with chronic lower back pain.Erector muscles:the best frequency of vibration is 15Hz.the best exercise is side stay.External oblique:the best frequency of vibration is 15Hz,the best exercise is side stay.Rectus abdominis:the best exercise on the vibration platform is "V" crunch.Although the rectus abdominis discharge capacity had increased with increasing frequency,but the muscles were not activated significantly.%目的:通过施加不同条件下的振动刺激,探讨振动训练对于慢性下背痛患者腰腹部肌群表面肌电信号的影响.利用表面肌电分析的方法,寻求最佳的振动频率和运动方式.方法:采用MyoResearch XP Master Software Version 1.07.17表面分析系统测试21例慢性下背痛患者腰腹部肌肉的肌肉电信号.所有受试者分别在振动频率为0Hz、5Hz、10Hz、15Hz下完成平板支撑、侧撑、V字支撑三个动作.结果:①竖脊肌的表面肌电值:在不同动作之间均有显著性差异(P＜ 0.05),在平板支撑和V字支撑的情况下,不同频率之间具有显著性差异(P＜0.05).②腹外斜肌的表面肌电值:在四种频率的情况下,不同动作之间均有显著性差异(P＜0.05),平板支撑和侧撑的情况下,不同频率之间具有显著性差异(P＜0.05).③腹直肌的表面肌电值:在0Hz和5Hz的情况下,不同动作之间均有显著性差异(P＜0.05),在三组动作的情况下,不同频率之间均没有显著性差异(P＞0.05).结论:不同振动条件的刺激,对慢性下背痛患者腰腹部肌群影响不同.竖脊肌最佳的振动频率为15Hz,最佳的振动动作为侧撑;腹外斜肌最佳的振动频率为15 Hz,最佳的振动动作为V字支撑;腹直肌的振动动作为V字支撑,就不同频率而言,虽然腹直肌随着频率的增高,放电量逐渐增加,但是不会对肌肉产生显著性影响.