Miyashita Toshinori, Kudo Shintarou, Maekawa Yoshihiro
Graduate School of Health Sciences, Morinomiya University of Medical Sciences, Osaka City, Japan.
Inclusive Medical Science Research Institute, Morinomiya University of Medical Sciences, Osaka City, Japan.
PeerJ. 2021 Apr 14;9:e11269. doi: 10.7717/peerj.11269. eCollection 2021.
Decreased walking speed has been revealed to be related to many negative events. Several researchers support the importance of triceps surae function as a cause of decreased walking speed. The purpose of this study was to investigate the relationship between walking speed and plantar flexor power during the terminal stance of gait in community-dwelling middle-aged and elderly women using an inertial sensor.
One hundred thirty-six healthy female middle-aged to elderly community-dwelling women were included in this study. We measured two-step score, grip strength, walking speed and accelerometer data from which we estimated ankle power (estimated ankle power) during walking using an inertial sensor. All participants were classified into the four different age strata, fifties (50-59), sixties (60-69), seventies (70-79) and eighties (80-89). The differences in each parameter between the four age groups were compared using repeated analysis of variance and post-hoc Bonferroni corrections for multiple comparisons to establish significance. Multiple regression analysis was carried out using a stepwise method to determine the correlations with comfortable walking speed. Comfortable walking speed was considered a dependent variable.
The normalized estimated ankle power of the eighties group was significantly decreased in comparison with seventies age groups and fifties age groups ( < 0.05), but there were no significant differences in normalized estimated ankle power between the sixties and eighties age-groups. The results of stepwise multiple regression analysis revealed that the normalized estimated ankle power, two-step value and body weight were highly-significant partial regression coefficients (adjusted = 0.57).
步行速度降低已被证明与许多负面事件相关。几位研究人员支持腓肠肌功能作为步行速度降低原因的重要性。本研究的目的是使用惯性传感器调查社区居住的中年和老年女性在步态末期站立时步行速度与跖屈肌力量之间的关系。
本研究纳入了136名健康的社区居住的中年至老年女性。我们测量了两步得分、握力、步行速度以及加速度计数据，通过这些数据我们使用惯性传感器估计了步行过程中的踝关节力量（估计踝关节力量）。所有参与者被分为四个不同年龄层，五十多岁（50 - 59岁）、六十多岁（60 - 69岁）、七十多岁（70 - 79岁）和八十多岁（80 - 89岁）。使用重复方差分析和事后Bonferroni校正进行多重比较，以确定四个年龄组之间每个参数的差异是否具有显著性。使用逐步法进行多元回归分析，以确定与舒适步行速度的相关性。舒适步行速度被视为因变量。
与七十多岁年龄组和五十多岁年龄组相比，八十多岁年龄组的标准化估计踝关节力量显著降低（<0.05），但六十多岁和八十多岁年龄组之间的标准化估计踝关节力量没有显著差异。逐步多元回归分析结果显示，标准化估计踝关节力量、两步值和体重是高度显著的偏回归系数（调整后 = 0.57）。
