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Reliability and Convergent Validity of Standing Posture Measurement Using a Mobile Application in Forward Head Posture

대한통합의학회지 2020년 8권 3호 p.173 ~ 180
강효정, 정경순, 양회송, 이완희,
소속 상세정보
강효정 ( Kang Hyo-Jeong ) - Cheongam College Department of Physical Therapy
정경순 ( Jeong Gyeong-Sun ) - Cheongam College Department of Physical Therapy
양회송 ( Yang Hoe-Song ) - Cheongam College Department of Physical Therapy
이완희 ( Lee Wan-Hee ) - Sahmyook University Department of Physical Therapy

Abstract


Purpose : The aim of this study was to assess the intra- and inter-rater reliability and validity of measurements of head, neck, and pelvis posture using a mobile application in subjects with forward head posture.

Methods : Forty-eight volunteers (22 men, 26 women) participated in this study. Two raters independently examined whole body picture images in a lateral standing posture with arms crossed using a CA-Smart Posture Reminder (CA-SPR), and a rater took and calculated posture images twice to assess reliability. We measured five parameters: craniovertebral angle 1 (CVA1), anterior shoulder translation (AST), pelvic tilt (PT), knee angle (KA), and ankle angle (AA) in the subject's sagittal plane using CA-SPR. We examined whole spine X-ray images in the same position to assess validity. We measured four variables in the subjects: CVA2, translation distance (AHT), anterior pelvic plane (APP), and sacral slope (SS). The intra- and inter-rater reliability were calculated using the intraclass correlation coefficient (ICC). Convergent validity was calculated using Pearson's correlation coefficient.

Results : The intra-rater reliability (ICC=.889 -.989) and inter-rater reliability (ICC=.800 -.980) were excellent for all variables measured using CA-SPR. The variables measured using CA-SPR and X-ray were significantly positively correlated (r=.623, p<.01). However, the correlation of the variables in the pelvis was not statistically significant.

Conclusion : This study shows that a mobile application (CA-SPR) is a useful tool for measuring head and neck posture in subjects with forward head posture. However, further study is needed to measure pelvic variables when using a mobile application.

키워드

forward head posture; mobile application; posture measurement; reliability; validity

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