Han Seulki, Lee Daehee, Lee Sangyong
Department of Physical Therapy, U1 University, Republic of Korea.
J Phys Ther Sci. 2016 Sep;28(9):2515-2518. doi: 10.1589/jpts.28.2515. Epub 2016 Sep 29.
[Purpose] Evaluation of the reliability of smartphones as measuring equipment for dynamic balance ability was the goal of this study. [Subjects and Methods] Subjects were 30 healthy young students in their 20s. The first and second rounds of measurements were taken at a one-day interval to confirm test-retest reliability. The subjects stood on the footboard of the Biodex Balance System. Balance was measured using a smart phone. [Results] Acceleration rates corresponding to subjects with open eyes were 2.7 ± 2.2 (first measurement) and 3.3 ± 1.5 (second measurement), and the interclass correlation coefficient ICC (1,1) was 0.8. Acceleration rates corresponding to subjects with closed eyes were 4.1 ± 2.4 (first measurement) and 4.5 ± 1.8 (second measurement), and the ICC (1,1) was 0.9. Gyroscope rates corresponding to subjects with open eyes were 1.7 ± 1.2 (first measurement) and 2.3 ± 1.5 (second measurement), and the ICC (1,1) was 0.7. Gyroscope rates corresponding to subjects with closed eyes were 6.7 ± 2.4 (first measurement) and 6.6 ± 2.3 (second measurement), and the ICC (1,1) was 0.6. [Conclusion] The results of this study suggest that smartphones have sufficient potential as measuring equipment for dynamic balance ability.
[目的] 本研究旨在评估智能手机作为动态平衡能力测量设备的可靠性。[对象与方法] 对象为30名20多岁的健康青年学生。测量分两轮，间隔一天进行，以确认重测信度。受试者站在Biodex平衡系统的踏板上，使用智能手机测量平衡。[结果] 睁眼受试者的加速度率第一次测量为2.7±2.2，第二次测量为3.3±1.5，组内相关系数ICC(1,1)为0.8。闭眼受试者的加速度率第一次测量为4.1±2.4，第二次测量为4.5±1.8，ICC(1,1)为0.9。睁眼受试者的陀螺仪率第一次测量为1.7±1.2，第二次测量为2.3±1.5，ICC(1,1)为0.7。闭眼受试者的陀螺仪率第一次测量为6.7±2.4，第二次测量为6.6±2.3，ICC(1,1)为0.6。[结论] 本研究结果表明，智能手机作为动态平衡能力测量设备具有足够的潜力。
