Department of Public Health and Sports Sciences, Faculty of Health and Life Sciences, University of Exeter, St. Luke's Campus, Exeter EX1 2LU, UK.
Department for Health, University of Bath, Bath BA2 7AY, UK.
Sensors (Basel). 2023 Aug 4;23(15):6943. doi: 10.3390/s23156943.
The purpose of this study was to investigate associations between peak magnitudes of raw acceleration (g) from wrist- and hip-worn accelerometers and ground reaction force (GRF) variables in a large sample of children and adolescents. A total of 269 participants (127 boys, 142 girls; age: 12.3 ± 2.0 yr) performed walking, running, jumping (<5 cm; >5 cm) and single-leg hopping on a force plate. A GENEActiv accelerometer was worn on the left wrist, and an Actigraph GT3X+ was worn on the right wrist and hip throughout. Mixed-effects linear regression was used to assess the relationships between peak magnitudes of raw acceleration and loading. Raw acceleration from both wrist and hip-worn accelerometers was strongly and significantly associated with loading (all 's < 0.05). Body mass and maturity status (pre/post-PHV) were also significantly associated with loading, whereas age, sex and height were not identified as significant predictors. The final models for the GENEActiv wrist, Actigraph wrist and Actigraph hip explained 81.1%, 81.9% and 79.9% of the variation in loading, respectively. This study demonstrates that wrist- and hip-worn accelerometers that output raw acceleration are appropriate for use to monitor the loading exerted on the skeleton and are able to detect short bursts of high-intensity activity that are pertinent to bone health.
本研究旨在探讨大量儿童和青少年的腕部和髋部佩戴加速度计的原始加速度峰值（g）与地面反作用力（GRF）变量之间的关联。共有 269 名参与者（127 名男孩，142 名女孩；年龄：12.3±2.0 岁）在力量板上进行了行走、跑步、跳跃（<5cm；>5cm）和单腿跳跃。在整个研究过程中，左侧手腕佩戴 GENEActiv 加速度计，右侧手腕和髋部佩戴 Actigraph GT3X+加速度计。混合效应线性回归用于评估原始加速度峰值与负荷之间的关系。来自腕部和髋部佩戴加速度计的原始加速度与负荷具有很强的显著相关性（所有's <0.05）。体重和成熟度状态（PHV 前/后）也与负荷显著相关，而年龄、性别和身高则未被确定为显著预测因素。GENEActiv 腕部、Actigraph 腕部和 Actigraph 髋部的最终模型分别解释了负荷变化的 81.1%、81.9%和 79.9%。本研究表明，输出原始加速度的腕部和髋部加速度计可用于监测骨骼所承受的负荷，并且能够检测与骨骼健康相关的高强度短时间爆发活动。
