Validity and reliability of smartphone-based pelvic rotation evaluations of children with cerebral palsy while sitting, standing, and standing on one leg
Issue title: Cerebral Palsy
Guest editors: Deborah Gaebler-Spira and Michael Green
Affiliations: Department of Physical Therapy, Uiduk University, Gangdong-myeon, 261 Donghae-daero, Gyeongju-si, Gyeongsangbuk-do 38004, Korea | Tel.: +82 54 760 1792; E-mail: kimdh@uu.ac.kr
Correspondence:
[*]
Corresponding author: Department of Physical Therapy, Uiduk University, Gangdong-myeon, 261 Donghae-daero, Gyeongju-si, Gyeongsangbuk-do 38004, Korea. Tel.: +82 54 760 1792; E-mail: kimdh@uu.ac.kr.
Abstract: PURPOSE:We explored the test-retest reliability of pelvic rotation measured using a smartphone and established criterion-related validity by analyzing simple linear regression between pelvic rotation data obtained using the smartphone and those measured by a palpation meter. METHODS: We recruited 12 children with cerebral palsy (CP) (7 boys and 5 girls) and measured pelvic rotation using a smartphone application and a palpation meter in the sitting, standing, and one-leg standing positions. Test-retest reliability was evaluated by calculating intraclass correlation coefficients (ICCs); simple linear regression was analyzed to explore the relationships between smartphone and palpation meter data. RESULTS: In terms of the test-retest reliability of pelvic rotation measured by the smartphone, the ICCs ranged from 0.85 to 0.95. A positive linear correlation was found between smartphone and palpation meter data. CONCLUSIONS: We confirmed that measurement of pelvic rotation using a smartphone was reliable when children with CP were in the sitting, standing, and one-leg standing positions. In addition, pelvic rotation measured using the smartphone correlated significantly with that measured using a palpation meter.
