胸椎过度后凸老年女性患者竖脊肌及相关躯体功能特征研究

Spinal erectors and physical capacity in elderly women with hyperkyphosis

目的探讨胸椎过度后凸老年女性患者竖脊肌抗疲劳能力,以及肺功能、日常生活活动能力的特征。方法选取112例老年女性,其中胸椎过度后凸者56例为观察组,不伴胸椎过度后凸者56例为对照组。采集两组患者竖脊肌表面肌电信号,采用频域指标中位频率的斜率(MFs)评估竖脊肌抗疲劳能力,同时测量并比较两组患者胸椎后凸Cobb角、肺活量,并进行6min步行试验比较6min步行距离(6MWT)。结果观察组患者胸椎后凸Cobb角大于对照组(P<0.05),肺活量、6MWT均小于对照组(均P<0.05),竖脊肌|MFs|大于对照组(P<0.05)。观察组患者竖脊肌|MFs|与胸椎后凸Cobb角呈正相关(r=0.879,P<0.05),即观察组患者竖脊肌抗疲劳能力与胸椎后凸Cobb角成负相关。结论胸椎过度后凸老年女性患者竖脊肌抗疲劳能力明显下降,肺活量、日常生活活动能力亦明显下降。

Objective To observe the characteristics of spinal erectors and physical capacities in elderly women with hyperkyphosis.Methods Fifty-six women （aged 63-85 years） with hyperkyphosis were recruited in the study（study group） and 56 women （aged 65-83 years） without hyperkyphosis served as control group.The anti-fatigue ability of spinal erectors was measured by slope of median frequency （MFs） on surface electromyograph （sEMG）,the thoracic kyphosis Cobb angle and vital capacity were measured and six-minute walk test （6MWrT） was performed in two groups.Results Study group had greater Cobb angle and IMFsl than control group （P〈0.05）,while the vital capacity and the distance of 6MWT were reduced significantly in study group compared with control group （P〈0.05）.There was significant positive correlation between IMFsl and Cobb angle （r=0.879,P〈0.05） in study group.Conclusion Anti-fatigue ability of spinal erectors,vital capacity and activities of daily living are significantly decreased in elderly women with hyperkyphosis.