Journal
ARCHIVES OF PHYSICAL MEDICINE AND REHABILITATION
Volume 95, Issue 12, Pages 2444-2469Publisher
W B SAUNDERS CO-ELSEVIER INC
DOI: 10.1016/j.apmr.2014.05.019
Keywords
Extremities; Isometric contraction; Muscle strength dynamometer; Observer variation; Rehabilitation; Reproducibility of results
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Objective: To summarize and appraise the literature on the intraexaminer reliability of hand-held dynamometry (HHD) in the upper extremity. Data Sources: MEDLINE, CINAHL, and EMBASE were searched for relevant studies published up to December 2011. In addition, experts were contacted, and journals and reference lists were hand searched. Study Selection: To be included in the review, articles needed to (1) use a repeated-measures, within-examiner(s) design; (2) include symptomatic or asymptomatic individuals, or both; (3) use BED to measure muscle strength in any of the joints of the shoulder, elbow, or wrist with the make or the break technique; (4) report measurements in kilogram, pound, or torque; (5) use a device that is placed between the examiner's hand and the subject's body; and (6) present estimates of intraexaminer reliability. Data Extraction: Quality assessment and data extraction were performed by 2 reviewers independently. Data Synthesis: Fifty-four studies were included, of which 26 (48%) demonstrated acceptable intraexaminer reliability. Seven high-quality studies showed acceptable reliability for flexion and extension of the elbow in healthy subjects. Conflicting results were found for shoulder external rotation and abduction. Reliability for all other movements was unacceptable. Higher estimates were reached for within-sessions reliability and if means of trials were used. Conclusions: Intraexaminer reliability of HHD in upper extremity muscle strength was acceptable only for elbow measurements in healthy subjects. We provide specific recommendations for future research. Physical therapists should not rely on HHD measurements for evaluation of treatment effects in patients with upper extremity disorders. (C) 2014 by the American Congress of Rehabilitation Medicine
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