Article

OBJECTIVE: To assess concurrent validity, between and within-day reliability of
scapular and clavicular digital inclinometer measures.
DESIGN: Test-retest and
concurrent validity. SETTING: Laboratory. PARTICIPANTS: Twenty-three participants
with and without shoulder symptoms. MAIN OUTCOME MEASURES: Static positions of
scapular upward rotation, anterior/posterior tilting and clavicular elevation
were measured between days with an inclinometer and compared to a 3-dimensional
electromagnetic tracking system in different positions of sagittal plane humeral
elevation (neutral, 30 degrees , 60 degrees , 90 degrees , 120 degrees ). The two
methods were compared using a two-way Analysis of Variance. Linear regressions at
each arm position were also performed to further assess concurrent validity.
RESULTS: Between-day reliability demonstrated Intraclass Correlation Coefficients
>/= 0.50 for all comparisons. There were statistically significant differences
between methods or interactions of method and arm position for clavicle elevation
(p = 0.004, maximum offset between methods 7.7 masculine in the neutral
position), and scapular upward rotation (p = 0.001). For scapular upward
rotation, the maximum difference between methods was less than 2 degrees across
all humeral positions. Clavicle elevation (r = 0.67-0.82) and scapular upward
rotation (r = 0.57-0.81) demonstrated higher correlations between measurement
methods than scapular anterior/posterior tilt (r = 0.10-0.67). CONCLUSIONS:
Concurrent validity in assessing scapular upward rotation and clavicle elevation
with an inclinometer was shown when compared with electromagnetic tracking.
However, the inclinometer method may not have adequate concurrent validity to
clinically measure scapular anterior/posterior tilting.

Langue : ANGLAIS