가속도 주파수분석 방법을 이용한 스마트폰 기반 정적균형평가

• Published in: Han'guk Chŏnmun Mulli Ch'iryo Hakhoe chi = Journal of the Korean Academy of University Trained Physical Therapists Vol. 25; no. 3; pp. 27 - 38
• Main Authors: 황지선, Jisun Hwang, 황선홍, Seonhong Hwang
• Format: Journal Article
• Language: Korean
• Published: 한국전문물리치료학회 30.09.2018; Korean Academy Of University Trained Physical Therapy
• Subjects: Balance assessment; Frequency analysis; Smartphone acceleration; 물리치료학; Balance assessment; Frequency analysis; Smartphone acceleration
• ISSN: 1225-8962; 2287-982X
• DOI: 10.12674/ptk.2018.25.3.027

Background: At present time, smartphones have become very popular and powerful devices, and smartphone applications with the good validity have been designed to assess human balance ability. Objects: The purpose of this study is to evaluate the feasibility of smartphone acceleration in the assessment of postural control ability for six different conditions. Methods: Twenty healthy college-aged individuals volunteered. Static balance ability was measured twice with one-day interval using smartphone application and 3D motion capture system under the six different conditions. Results: Dominant frequencies for each test condition did not show significant differences except for two conditions. The intra-rater correlation coefficient between the first and second tests showed high correlations in six conditions(r>.70, p< .05). Smartphone acceleration and the acceleration calculated from the 3D marker position data showed high correlation coefficient(r >.80, p<.001). Conclusion: Acceleration recorded from a smartphone could be useful assessment variables for balance test in the clinical field.