倒走对老年女性下肢选择反应时和平衡能力的影响
摘要
目的比较长期倒走和一般老年女性小腿肌群的选择反应时和平衡能力的差异。方法年龄、身高、体重相匹配的倒走组和对照组老年女性各22例,进行优势腿胫骨前肌和腓肠肌的前、后反应时,和开、闭眼单脚站立时间的测试。结果倒走组胫骨前肌和腓肠肌前反应时显著大于对照组(P<0.001),后反应时则表现为对照组胫骨前肌显著大于倒走组(P=0.030)。胫骨前肌后反应时与闭眼单脚站立时间呈中度显著负相关(r=-0.681,P<0.05)。结论长期倒走能够缩短老年女性下肢选择反应时,平衡能力更好,但腓肠肌后反应时变化不显著。
引文
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2 Lord SR,Fitzpatrick RC.Choice stepping reaction time a composite measure of falls risk in older people[J].J Gerontol A Biol Sci Med Sci,2001;56(10):627-32.
3 Ballanger B,Boulinguez P.EMG as a key tool to assess motor lateralization and hand reaction time asymmetries[J].J Neurosci Methods,2009;179(1):85-9.
4 Li JX,Xu DQ,Hong Y.Changes in muscle strength,endurance and reaction of the lower extremities with Tai Chi intervention[J].J Biomech,2009;42(8):967-71.
5 Lord SR,Clark RD,Webster IW.Postural stability and associated physiological factors in a population of aged person[J].J Gerontol,1991;46(3):69-76.
6 Welford AT.Between bodily changes and performance:some possible reasons for slowing with age[J].Exp Aging Res,1984;10(2):73-88.
7 Gruber PJ,Chauhan C.Rheumatologic and orthopedic emergencies in the elderly[J].Geri Emer Med,2014;4(31):237-41.
8 王健.s EMG信号分析及其应用研究进展[J].体育科学,2000;20(4):56-60.
9 Mirjam P,Kim D,Dainal S,et al.The association between choice stepping reaction time and falls in older adults-a path analysis model[J].Age Ageing,2010;39(1):99-104.