Polese Janaine Cunha, Scianni Aline Alvim, Teixeira-Salmela Luci Fuscaldi
Discipline of Physiotherapy, Universidade Federal de Minas Gerais, Brazil; Discipline of Physiotherapy, Faculdade de Ciências Médicas de Minas Gerais, Brazil.
Discipline of Physiotherapy, Universidade Federal de Minas Gerais, Brazil.
J Phys Ther Sci. 2015 Dec;27(12):3739-43. doi: 10.1589/jpts.27.3739. Epub 2015 Dec 28.
[Purpose] This study aimed to determine which clinical measures of walking performance and lower limb muscle strength would predict energy cost during stair ascent and descent in community-dwelling individuals with stroke. [Subjects and Methods] Regression analysis of cross-sectional data from 55 individuals between one and five years post-stroke was used to investigate the measures of walking (speed and distance covered during the 6-minute walk test [6MWT]), and strength of the paretic knee extensor and ankle plantar flexor muscles would predict energy cost during stair ascent and descent. [Results] Three predictors (habitual walking speed, distance covered during the 6MWT, and strength of the paretic knee extensor muscles) were kept in the model. Habitual walking speed alone explained 47% of the variance in energy cost during stair ascent and descent. When the strength of the paretic knee extensor muscles was included in the model, the explained variance increased to 53%. By adding the distance covered during the 6MWT, the variance increased to 58%. [Conclusion] Habitual walking speed, distance covered during the 6MWT, and strength of the paretic knee extensor muscles were significant predictors of energy cost during stair ascent and descent in individuals with mild walking limitations.
[目的] 本研究旨在确定哪些步行性能和下肢肌肉力量的临床指标能够预测社区中风患者上下楼梯时的能量消耗。[对象与方法] 采用对55例中风后1至5年个体的横断面数据进行回归分析，以研究步行指标（6分钟步行试验[6MWT]中的速度和步行距离）以及患侧膝伸肌和踝跖屈肌的力量是否能够预测上下楼梯时的能量消耗。[结果] 模型保留了三个预测因子（习惯性步行速度、6MWT中的步行距离以及患侧膝伸肌的力量）。仅习惯性步行速度就能解释上下楼梯时能量消耗方差的47%。当模型纳入患侧膝伸肌的力量时，解释方差增加到53%。通过加入6MWT中的步行距离，方差增加到58%。[结论] 对于步行轻度受限的个体，习惯性步行速度、6MWT中的步行距离以及患侧膝伸肌的力量是上下楼梯时能量消耗的重要预测指标。
