Reliability of trunk strength measurements with an isokinetic dynamometer in non-specific low back pain patients: A systematic review

Author:

Reyes-Ferrada Waleska12,Chirosa-Rios Luis1,Martinez-Garcia Darío2,Rodríguez-Perea Ángela1,Jerez-Mayorga Daniel2

Affiliation:

1. Department Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada, Spain

2. Exercise and Rehabilitation Sciences Laboratory, School of Physical Therapy, Faculty of Rehabilitation Sciences, Universidad Andres Bello, Santiago, Chile

Abstract

BACKGROUND: Imbalance or decreased trunk strength has been associated with non-specific low back pain (NSLBP). OBJECTIVE: This systematic review aimed (I) to evaluate the quality of evidence of studies evaluating the reliability of trunk strength assessment with an isokinetic dynamometer in NSLBP patients, (II) to examine the reliability of trunk strength assessment using an isokinetic dynamometer in NSLBP patients and (III) to determine the most reliable protocol for trunk strength assessment in NSLBP patients. METHOD: PRISMA guidelines were followed. Three databases were used: PubMed, Scopus, and Web of Science with the following keywords: Isokinetic, Dynamometer, Trunk strength testing, Muscle testing, Isokinetic measurement, CORE, Abdominal muscles, Abdominal wall, Torso, Trunk, Spine, Reliability and, Reproducibility. We included only test-retest studies, focused on the reliability of isometric and isokinetic strength assessed with an isokinetic dynamometer in NSLBP adults’ patients, published in English and from inception to March 30, 2021. The methodological quality was evaluated with the CAT scale and QAREL checklist. RESULTS: Five hundred and seventy-seven articles were retrieved, of which five are included in this review. Three articles provide good quality of evidence, the reliability of trunk strength assessment in NSLBP patients is excellent, and the most reliable protocol for isometric assessment is in a seated position (ICC = 0.94–0.98) and for isokinetic strength in standing position, at 60∘/s and 120∘/s (ICC = 0.98). CONCLUSION: There is good quality evidence regarding the trunk strength assessment’s reliability. Reliability is excellent in NSLBP patients; however, a familiarization process should be considered to obtain clinically reliable data. The most reliable protocol is in a seated position for isometric strength and a standing position for isokinetic strength.

Publisher

IOS Press

Subject

Rehabilitation,Physical Therapy, Sports Therapy and Rehabilitation,Orthopedics and Sports Medicine

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