Abstract
Objective
To investigate the evidence of measurement properties of isokinetic dynamometry (ID)
for assessment of shoulder muscle strength in healthy individuals and patients with
nonneurologic shoulder pathology.
Data Sources
Cochrane Central Register of Controlled Trials, PubMed, EMBASE, and Physiotherapy
Evidence Database were searched up to February 2020 without restrictions. Reference
lists and citations were hand-searched.
Study Selection
Two review authors independently included studies that met the following criteria:
(1) evaluated measurement properties of ID when used on the glenohumeral joint and
(2) included individuals 18 years and older. Studies including patients with neurologic,
neuromuscular, or systemic diseases or critical illness were excluded.
Data Extraction
The quality assessment and data synthesis were performed according to the COnsensus-based
Standards for the selection of health Measurement INstruments methodology.
Data Synthesis
Twenty-one studies with a total of 597 participants were included. The results were
combined separately for isometric, concentric, and eccentric test mode; for the velocities
30°/s-60°/s, 90°/s, 120°/s, and 240°/s; for the seated, supine, and standing position;
and for internal rotation (IR), external rotation (ER), and the ER/IR ratio. The reliability
of ID was overall sufficient with the majority of intraclass correlation coefficients
≥0.70. The quality of evidence was moderate or low for 20 of 30 strata examined. The
measurement error results were rated as insufficient for all strata. The SEM ranged
from 4%-28%. The quality of evidence varied depending of strata examined.
Conclusions
The reliability of ID for measurement of shoulder strength was overall sufficient
for all positions, velocities, and modes of strength. The measurement error was not
sufficient. Because most studies used the seated position, the velocities 30°/s-60°/s
or 120°/s, and the concentric test mode, the quality of evidence was highest for these
conditions.
Keywords
List of abbreviations:
COSMIN (COnsensus-based Standards for the selection of health Measurement INstruments), ER (external rotation), ICC (intraclass correlation coefficient), ID (isokinetic dynamometry), IR (internal rotation), MDC (minimal detectable change), MIC (minimal important change)To read this article in full you will need to make a payment
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Article info
Publication history
Published online: June 30, 2020
Footnotes
The study was funded by Aarhus University, Denmark and Department of Physiotherapy and Occupational Therapy, Aarhus University Hospital, Denmark.
Clinical Trial Registration No.: CRD42017054027.
Disclosures: none.
Identification
Copyright
© 2020 by the American Congress of Rehabilitation Medicine
