Shieh Vincent, Sansare Ashwini, Jain Minal, Bulea Thomas, Mancini Martina, Zampieri Cris
Rehabilitation Medicine Department, National Institutes of Health, Bethesda, MD.
Department of Neurology, Oregon Health & Science University, Portland, OR.
J Meas Phys Behav. 2020 Sep;3(3):228-233. doi: 10.1123/jmpb.2019-0029. Epub 2020 Jun 4.
Clinical evaluation of balance has relied on forceplate systems as the gold standard for postural sway measures. Recently, systems based on wireless inertial sensors have been explored, mostly in the adult population, as an alternative given their practicality and lower cost. Our goal was to validate body-worn sensors against forceplate balance measures in typically developing children during tests of quiet stance.
18 participants (8 males) 7 to 17 years old performed a quiet stance test standing on a forceplate while wearing 3 inertial sensors. Three 30-second trials were performed under 4 conditions: firm surface with eyes open and closed, and foam surface with eyes open and closed. Sway area, path length, and sway velocity were calculated.
We found 20 significant and 8 non-significant correlations. Variables found to be significant were represented across all conditions, except for the foam eyes closed condition.
These results support the validity of wearable sensors in measuring postural sway in children. Inertial sensors may represent a viable alternative to the gold standard forceplate to test static balance in children.
平衡的临床评估一直依赖测力台系统作为姿势摆动测量的金标准。最近，基于无线惯性传感器的系统已被探索，主要是在成人中，鉴于其实用性和较低成本，可作为一种替代方案。我们的目标是在安静站立测试中，针对典型发育儿童，验证穿戴式传感器与测力台平衡测量结果的一致性。
18名参与者（8名男性），年龄在7至17岁之间，在站立于测力台上时佩戴3个惯性传感器，进行安静站立测试。在4种条件下进行了3次30秒的试验：睁眼和闭眼的坚实表面，以及睁眼和闭眼的泡沫表面。计算了摆动面积、路径长度和摆动速度。
我们发现了20个显著相关性和8个非显著相关性。除了闭眼在泡沫表面的条件外，在所有条件下均发现了显著的变量。
这些结果支持了可穿戴传感器在测量儿童姿势摆动方面的有效性。惯性传感器可能是测试儿童静态平衡的金标准测力台的可行替代方案。
