Reliability of the handheld dynamometer in the evaluation of the muscle strength of trunk extensors in healthy adults

Mariana do Carmo Pinto Oliveira Barros; Nathália Passos Clemente; Fábio de Lima Rezende; Thaís Brasil Cardoso; Sérgio Ricardo Thomaz; Patrícia Azevedo Garcia; Alexandre Lima de Araújo Ribeiro; Wagner Rodrigues Martins

doi:10.6063/motricidade.20784

Reliability of the handheld dynamometer in the evaluation of the muscle strength of trunk extensors in healthy adults

Authors

Mariana do Carmo Pinto Oliveira Barros
Nathália Passos Clemente
Fábio de Lima Rezende
Thaís Brasil Cardoso https://orcid.org/0000-0001-8606-4184
Sérgio Ricardo Thomaz https://orcid.org/0000-0001-8287-4841
Patrícia Azevedo Garcia https://orcid.org/0000-0002-9043-1386
Alexandre Lima de Araújo Ribeiro University of Brasília https://orcid.org/0000-0001-5266-4499
Wagner Rodrigues Martins https://orcid.org/0000-0002-0709-7373

DOI:

https://doi.org/10.6063/motricidade.20784

Keywords:

Manual Dynamometer, Assessment, Force, Back Strength, Evidence-Based Practice

Abstract

The muscular performance of the lumbar spine is frequently assessed in studies that compare populations with and without low back pain. However, the gold standard equipment used to evaluate the strength of these muscles has a high cost. Therefore, rarely used in the clinical practice of health professionals, being the handheld dynamometer is an accessible alternative for use in clinical practice. Therefore, this study aimed to determine the reliability of the handheld dynamometer in the measurement of maximum voluntary isometric contraction of trunk extensors in healthy adults. Twenty-six healthy adults of both sexes (21.53± 1.88 years old) performed the test and retest with a 1-week interval. The comparison between test-retest demonstrated high and very high intraclass correlation coefficient for peak strength (0.82; 0.60 to 0.92) and mean strength (0.90; 0.76 to 0.95), respectively. Also, the Bland-Altman analyses indicate an error of 5.10 kg for peak strength and 5.7 kg for mean strength. In addition, the minimum detectable change for peak strength was 6.03kg (16.18%) and 5.92 kg for mean strength (20.95%). In conclusion, the test presents high reliability for the extensor muscles of the trunk in healthy adults. Therefore, the use of the handheld dynamometer can be indicated for clinical practice.

Keywords: manual dynamometer; assessment; force; back strength; evidence-based practice.

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Published

2021-09-30

How to Cite

Barros, M. do C. P. O., Clemente , N. P., Rezende , F. de L., Cardoso , T. B., Thomaz , S. R., Garcia , P. A., … Martins , W. R. (2021). Reliability of the handheld dynamometer in the evaluation of the muscle strength of trunk extensors in healthy adults. Motricidade, 17(3), 235–241. https://doi.org/10.6063/motricidade.20784

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Issue

Vol. 17 No. 3 (2021): Motricidade

Section

Original Article

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