Validity and reliability of smartphone-based pelvic rotation evaluations of children with cerebral palsy while sitting, standing, and standing on one leg.
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.
['Kim|Do Hyun|DH|']
D002547:Cerebral Palsy D002648:Child D005260:Female D006801:Humans D007866:Leg D008297:Male D016059:Range of Motion, Articular D015203:Reproducibility of Results D012399:Rotation D000077708:Sitting Position D000068997:Smartphone D000078783:Standing Position
pelvic rotation Cerebral palsy palpation meter