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Int J Sports Phys Ther. 2012 Jun;7(3):306-13.

The reliability and concurrent validity of shoulder mobility measurements using a digital inclinometer and goniometer: a technical report.

Abstract

PURPOSE/AIM:

This study investigated the intrarater reliability and concurrent validity of active shoulder mobility measurements using a digital inclinometer and goniometer.

MATERIALS/METHODS:

Two investigators used a goniometer and digital inclinometer to measure shoulder flexion, abduction, internal and external rotation on 30 asymptomatic participants in a blinded repeated measures design.

RESULTS:

Excellent intrarater reliability was present with Intraclass Correlation Coefficients (ICC- 3,k) for goniometry ≥ 0.94 and digital inclinometry ≥ 0.95. The concurrent validity between goniometry and digital inclinometry was good with ICC (3,k) values of ≥ 0.85. The 95% limits of agreement suggest that the difference between these two measurement instruments can be expected to range from 2° to 20°.

CONCLUSIONS:

The results cautiously support the interchangeable use of goniometry and digital inclinometer for measuring shoulder mobility measurements. Although reliable, clinicians should consider the 95% limits of agreement when using these instruments interchangeably as clinically significant differences are likely to be present.

LEVEL OF EVIDENCE:

2b.

KEYWORDS:

Goniometry; inclinometry; reliability; shoulder; validity

PMID:
22666645
PMCID:
PMC3362980

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