Pouliot-Laforte A, Veilleux L N, Rauch F, Lemay M
Shriners Hospital for Children-Canada and Departement of Pediatrics, McGill University, Montreal, Quebec, Canada.
J Musculoskelet Neuronal Interact. 2014 Jun;14(2):155-61.
Vertical ground reaction forces (vGRFs) are closely related to bone strength and development. It is therefore relevant to assess these forces in bone disorders accompanied with muscle weakness such as in osteogenesis imperfecta type I (OI type I). The purpose of the present study was to assess the validity of vGRFs derived from an accelerometer.
Fourteen children and adolescents with a diagnosis of OI type I (age range: 7 to 21; mean age [SD]: 14.1 [4.8] years; 5 males) and fourteen healthy controls (age range: 6 to 21; mean age [SD]: 12.5 [4.2] years; 5 males) performed three repetitions of five different jump and rise tests on a ground reaction force plate. Jumps and rises outcomes were measured simultaneously with the ground reaction force plate and an accelerometer.
Pearson correlation coefficients were over 0.96 (p<0.001) for the five tests. The limits of agreement represented between 17 and 31% of the average peak force measured by both devices. The accelerometer is a promising tool to assess ground reaction forces in everyday life settings and has been shown to be sufficiently sensitive to detect muscular weakness in children and adolescent with OI type I.
垂直地面反作用力（vGRF）与骨骼强度和发育密切相关。因此，在伴有肌肉无力的骨骼疾病中，如I型成骨不全症（OI I型），评估这些力是有意义的。本研究的目的是评估由加速度计得出的vGRF的有效性。
14名诊断为OI I型的儿童和青少年（年龄范围：7至21岁；平均年龄[标准差]：14.1[4.8]岁；5名男性）和14名健康对照者（年龄范围：6至21岁；平均年龄[标准差]：12.5[4.2]岁；5名男性）在地面反作用力板上对五种不同的跳跃和起身测试进行了三次重复。跳跃和起身结果由地面反作用力板和加速度计同时测量。
五项测试的Pearson相关系数均超过0.96（p<0.001）。一致性界限占两种设备测量的平均峰值力的17%至31%。加速度计是一种在日常生活环境中评估地面反作用力的有前景的工具，并且已被证明对检测OI I型儿童和青少年的肌肉无力足够敏感。
