Arai Takeshi, Obuchi Shuichi, Shiba Yoshitaka, Omuro Kazuya, Nakano Chika, Higashi Takuya
Department for Prevention of Dependence on Long-term Care, Tokyo Metropolitan Institute of Gerontology, Itabashi-ku, Tokyo Met, Japan.
Arch Phys Med Rehabil. 2008 Jan;89(1):95-9. doi: 10.1016/j.apmr.2007.07.051.
To determine the reliability of an assessment of joint angular velocity using a gyro-sensor and to examine the relationship between ankle angular velocity and physical functions.
Cross-sectional.
Kinesiology laboratory.
Twenty healthy young adults (mean age, 22.5 y) and 113 community-dwelling older adults (mean age, 75.1 y).
Not applicable.
Maximal ankle joint velocity was measured using a gyro-sensor during heel-rising and jumping with knee extended. The intraclass correlation coefficient (ICC) was used to determine the intertester and intratester reliability. The Pearson correlation coefficient was used to examine the relationships between maximal ankle joint velocity and isometric muscle strength and isokinetic muscle power in young adults and also to examine the relationships between maximal ankle joint velocity and functional performance measurements such as walking time in older adults.
High reliability was found for intertester (ICC=.96) and intratester reliability (ICC=.96). The data from the gyro-sensor highly correlated with muscle strength (r range, .62-.68; P<.01) and muscle power (r range, .45-.79; P range, .01-.05). In older subjects, mobility functions significantly correlated with the angular velocity of ankle plantarflexion.
Measurement of ankle angular velocity using a gyro-sensor is both reliable and feasible, with the results representing a significant correlation to muscle power and performance measurements.
确定使用陀螺仪传感器评估关节角速度的可靠性，并研究踝关节角速度与身体功能之间的关系。
横断面研究。
运动机能学实验室。
20名健康的年轻成年人（平均年龄22.5岁）和113名社区居住的老年人（平均年龄75.1岁）。
不适用。
在足跟抬起和膝关节伸展跳跃过程中，使用陀螺仪传感器测量踝关节最大速度。组内相关系数（ICC）用于确定测试者间和测试者内的可靠性。Pearson相关系数用于研究年轻成年人中踝关节最大速度与等长肌力和等速肌肉力量之间的关系，以及老年人中踝关节最大速度与功能表现测量指标（如步行时间）之间的关系。
测试者间可靠性（ICC = 0.96）和测试者内可靠性（ICC = 0.96）均较高。来自陀螺仪传感器的数据与肌肉力量（r范围为0.62 - 0.68；P < 0.01）和肌肉力量（r范围为0.45 - 0.79；P范围为0.01 - 0.05）高度相关。在老年受试者中，活动功能与踝关节跖屈角速度显著相关。
使用陀螺仪传感器测量踝关节角速度既可靠又可行，结果与肌肉力量和功能表现测量指标显著相关。
