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Meta-Analysis
. 2021 Sep 3;18(17):9293.
doi: 10.3390/ijerph18179293.

Absolute Reliability and Concurrent Validity of Hand-Held Dynamometry in Shoulder Rotator Strength Assessment: Systematic Review and Meta-Analysis

Claudio Chamorro  1   2 , Miguel Arancibia  1 , Benjamín Trigo  1 , Leónidas Arias-Poblete  1 , Daniel Jerez-Mayorga  1
Affiliations
Meta-Analysis

Absolute Reliability and Concurrent Validity of Hand-Held Dynamometry in Shoulder Rotator Strength Assessment: Systematic Review and Meta-Analysis

Claudio Chamorro et al. Int J Environ Res Public Health. .

Abstract

The purpose of this study is to establish the absolute reliability between hand-held dynamometers (HHDs) and concurrent validity between HHDs and isokinetic dynamometers (IDs) in shoulder rotator strength assessment. The Medline, CINAHL, and Central databases were searched for relevant studies up to July 2020. Absolute reliability was determined by test-retest studies presenting standard error of measurement (SEM%) and/or minimal detectable change (MDC%) expressed as percentage of the mean. Studies considering intra-class correlation coefficient (ICC) between IDs and HHDs were considered for concurrent validity. The risk of bias and the methodological quality were evaluated according to COnsensus-based Standards for the selection of health Measurement INstruments (COSMIN). Thirteen studies were included in the meta-analysis. Shoulder internal rotator strength assessment MDC% was 0.78%, 95% confidence interval (CI) -5.21 to 3.66, while shoulder external rotators MDC% was 3.29%, CI -2.69 to 9.27. ICC between devices was 0.94, CI (0.91 to 0.96) for shoulder internal rotators and 0.92, IC (0.88 to 0.97) for shoulder external rotators. Very high correlation was found for shoulder rotator torque assessment between HHDs and IDs. The COSMIN checklist classified the selected studies as adequate and inadequate.

Keywords: muscle strength; reliability; rotator cuff.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Flow chart of the manuscript selection process.
Figure 2
Figure 2
Absolute reliability for shoulder internal rotator strength assessment.
Figure 3
Figure 3
Absolute reliability for shoulder external rotator strength assessment.
Figure 4
Figure 4
Meta-analysis of concurrent validity for shoulder internal rotator strength assessment.
Figure 5
Figure 5
Meta-analysis of concurrent validity for shoulder external rotator strength assessment.
See this image and copyright information in PMC

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