Physical Therapy Korea
pISSN 1225-8962 eISSN 2287-982X

Reliability of the flexion angle measurement

Variable Intra-day reliability Inter-day reliability


ICC (95% CI) SEM MDC (95% CI) ICC (95% CI) SEM MDC (95% CI)
HANPCS
Neck flexion (˚) 0.971 (0.939–0.987) 1.37 3.79 0.937 (0.865–0.970) 2.04 5.65
Upper trunk flexion (˚) 0.954 (0.902–0.978) 1.05 2.92 0.865 (0.713–0.937) 1.76 4.87
3DMAS
Neck flexion (˚) 0.981 (0.960–0.991) 1.15 3.18 0.946 (0.884–0.974) 1.90 5.20
Upper trunk flexion (˚) 0.970 (0.937–0.986) 0.84 2.32 0.923 (0.835–0.964) 1.38 3.82

HANPCS, headphone and necklace posture correction system; 3DMAS, three-dimensional motion analysis system; ICC, intraclass correlation coefficient; CI, confidence interval; SEM, standard error of measurement; MDC, minimal detectable change.

Phys. Ther. Korea 2023;30:174~183 https://doi.org/10.12674/ptk.2023.30.3.174
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