Journal of the Korean Society of Physical Medicine (대한물리의학회지)

The Korean Society of Physical Medicine (대한물리의학회)
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Validity Study of Dynamic Balance Abilities Measure using a Smartphone

스마트폰을 이용한 동적균형능력 측정의 타당도 연구

  • Han, Seul-Ki (Dept. of Physical Therapy, Youngdong University) ;
  • Lee, Sang-Yong (Dept. of Physical Therapy, Youngdong University) ;
  • Lee, Dae-Hee (Dept. of Physical Therapy, Youngdong University) ;
  • Park, Jung-Seo (Dept. of Physical Therapy, Daejeon Institute of Science and Technology)
  • 한슬기 (영동대학교 물리치료학과) ;
  • 이상용 (영동대학교 물리치료학과) ;
  • 이대희 (영동대학교 물리치료학과) ;
  • 박정서 (대전과학기술대학교 물리치료학과)
  • Received : 2016.03.28
  • Accepted : 2016.04.22
  • Published : 2016.05.31
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Abstract

PURPOSE: The purpose of this study was to investigate the validity of dynamic balance measurements using a smartphone. METHODS: Thirty subjects were selected out of Y-university students without fractures, operation history, and inflammatory arthritis who had not started regular exercise during the past three months. Their dynamic balance ability was measured by the Biodex Balance System (Biodex Medical Systems, Inc., USA) using smartphones. The smartphone utilized in this study was the Galaxy Note4 LTE (SM-N910K, Samsung, Korea), and the application was the Sensor Kinetics pro (Ver.2.1.2, INNOVENTIONS Inc, US). The dynamic balance ability was measured in triplicate. RESULTS: With eyes closed, a low level of correlation (r>0.30, p<0.05) and low reliability (ICC>0.60) were determined between the roll value of the smartphone gyroscope versus the medial/lateral score of the Biodex Balance System. With eyes closed, a low level of correlation (r>0.30, p<0.05) and low reliability (ICC>0.60) were determined between the total value of the smartphone gyroscope versus the total score of the Biodex Balance System. CONCLUSION: This study indicated that using a smartphone can generate highly limited data regarding balance ability. They are unlikely to replace the existing more expensive devices entirely. However, smartphones may be highly useful in environments in which an expensive device is not available or when dynamic balance ability should be measured immediately or within a few hours.

Keywords

References

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