The effect of prolonged static and cyclic stretching on ankle joint stiffness, torque relaxation, and gait in people with stroke
The effect of prolonged static and cyclic stretching on ankle joint stiffness, torque relaxation, and gait in people with stroke
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DOI：
10.1093/ptj/82.9.880
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发表时间：
2002-09-01
期刊：
影响因子：
3.2
通讯作者：
McNair, PJ
中科院分区：
文献类型：
--
作者：
Bressel, E;McNair, PJ
背景与目的。持续被动运动（对受试者肢体施加周期性拉伸）已用于一些骨科损伤的康复；然而，很少有研究人员考虑将其应用于诸如中风等神经系统疾病的治疗。本研究的目的是检验长时间静态和周期性小腿拉伸对缺血性中风患者的踝关节被动僵硬程度、扭矩松弛以及步态的短期影响。
受试者。10名被诊断患有脑血管意外且居住在社区的人（平均年龄 = 61.6岁，标准差 = 8.76，年龄范围 = 53 - 76岁）自愿成为受试者。
方法。参与者使用等速测力仪分别进行一次30分钟的小腿肌肉静态拉伸和一次30分钟的周期性拉伸，该仪器还收集扭矩和角度测量值。在治疗前后，收集10米步行时间。踝关节僵硬程度通过治疗前后扭矩和角度曲线的斜率来计算，扭矩松弛计算为30分钟拉伸期间峰值被动扭矩下降的百分比。
结果。静态拉伸和周期性拉伸后，踝关节僵硬程度分别降低了35%和30%。不同条件下的僵硬程度值和10米步行时间没有差异。静态拉伸的扭矩松弛量比周期性拉伸大53%。
讨论与结论。这些来自极少数中风患者样本的初步数据表明，长时间静态和周期性拉伸后踝关节僵硬程度均降低；然而，两种技术在降低中风患者的僵硬程度方面似乎都没有优势。静态拉伸后的扭矩松弛比周期性拉伸后更大，并且步行速度似乎不受我们研究中使用的拉伸治疗的影响。[布雷塞尔E，麦克奈尔PJ。长时间静态和周期性拉伸对中风患者踝关节僵硬程度、扭矩松弛和步态的影响]
Background and Purpose. Continuous passive motion (cyclic stretching applied to the subject's limb) has been used for the rehabilitation of some orthopedic impairments; however, few researchers have considered its application in the management of neurological disorders such as stroke. The purpose of this study was to examine the short-term effects of prolonged static and cyclic calf stretching on passive ankle joint stiffness, torque relaxation, and gait in people with ischemic stroke. Subjects. Ten community-dwelling people (mean age=616 years, SD=8.76, range=53-76) who were diagnosed with a cerebrovascular accident volunteered to be subjects. Methods. Participants engaged in one 30-minute static stretch and one 30-minute cyclic stretch of the calf muscle, using an isokinetic dynamometer that also collected torque and angle measurements. Before and after treatments, 10-m walking times were collected. Ankle joint stiffness was calculated from the slope of the torque and angle curves before and immediately after treatments, and torque relaxation was calculated as the percentage of decrease in peak passive torque over the 30-minute stretch durations. Results. Ankle joint stiffness decreased by 35% and 30% after the static and cyclic stretches, respectively. Stiffness values and 10-m walk times were not different between conditions. The amount of torque relaxation was 53% greater for static stretching than for cyclic stretching. Discussion and Conclusion. These preliminary data from a very small sample of people with stroke indicate that ankle joint stiffness decreases after both prolonged static and cyclic stretches; however, neither technique appears to be better at reducing stiffness in people with stroke. Torque relaxation is greater after static stretching than after cyclic stretching, and walking speed does not appear to be influenced by the stretching treatments used in our study. [Bressel E, McNair PJ. The effect of prolonged static and cyclic stretching on ankle joint stiffness, torque relaxation, and gait in people 6th stroke.