Manual muscle testing and hand-held dynamometry in people with inflammatory myopathy : an intra- and interrater reliability and validity study

Baschung Pfister, Pierrette; de Bruin, Eling D.; Sterkele, Iris; Maurer, Britta; de Bie, Rob A.; Knols, Ruud H.

doi:10.21256/zhaw-4861

Please use this identifier to cite or link to this item: https://doi.org/10.21256/zhaw-4861

Publication type:	Article in scientific journal
Type of review:	Peer review (publication)
Title:	Manual muscle testing and hand-held dynamometry in people with inflammatory myopathy : an intra- and interrater reliability and validity study
Authors:	Baschung Pfister, Pierrette de Bruin, Eling D. Sterkele, Iris Maurer, Britta de Bie, Rob A. Knols, Ruud H.
DOI:	10.21256/zhaw-4861 10.1371/journal.pone.0194531
Published in:	PLOS ONE
Volume(Issue):	13
Issue:	3
Issue Date:	2018
Publisher / Ed. Institution:	Public Library of Science
ISSN:	1932-6203
Language:	English
Subjects:	Adult; Humans; Isometric Contraction; Muscle Strength; Muscle; Myositis; Reproducibility of Results; Muscle Strength Dynamometer; Skeletal
Subject (DDC):	615.82: Physical therapy 616.7: Diseases of musculoskeletal system and orthopaedics
Abstract:	Manual muscle testing (MMT) and hand-held dynamometry (HHD) are commonly used in people with inflammatory myopathy (IM), but their clinimetric properties have not yet been sufficiently studied. To evaluate the reliability and validity of MMT and HHD, maximum isometric strength was measured in eight muscle groups across three measurement events. To evaluate reliability of HHD, intra-class correlation coefficients (ICC), the standard error of measurements (SEM) and smallest detectable changes (SDC) were calculated. To measure reliability of MMT linear Cohen`s Kappa was computed for single muscle groups and ICC for total score. Additionally, correlations between MMT8 and HHD were evaluated with Spearman Correlation Coefficients. Fifty people with myositis (56±14 years, 76% female) were included in the study. Intra-and interrater reliability of HHD yielded excellent ICCs (0.75-0.97) for all muscle groups, except for interrater reliability of ankle extension (0.61). The corresponding SEMs% ranged from 8 to 28% and the SDCs% from 23 to 65%. MMT8 total score revealed excellent intra-and interrater reliability (ICC>0.9). Intrarater reliability of single muscle groups was substantial for shoulder and hip abduction, elbow and neck flexion, and hip extension (0.64-0.69); moderate for wrist (0.53) and knee extension (0.49) and fair for ankle extension (0.35). Interrater reliability was moderate for neck flexion (0.54) and hip abduction (0.44); fair for shoulder abduction, elbow flexion, wrist and ankle extension (0.20-0.33); and slight for knee extension (0.08). Correlations between the two tests were low for wrist, knee, ankle, and hip extension; moderate for elbow flexion, neck flexion and hip abduction; and good for shoulder abduction. In conclusion, the MMT8 total score is a reliable assessment to consider general muscle weakness in people with myositis but not for single muscle groups. In contrast, our results confirm that HHD can be recommended to evaluate strength of single muscle groups.
URI:	https://digitalcollection.zhaw.ch/handle/11475/12327
Fulltext version:	Published version
License (according to publishing contract):	CC BY 4.0: Attribution 4.0 International
Departement:	School of Health Sciences
Organisational Unit:	Institute of Physiotherapy (IPT)
Appears in collections:	Publikationen Gesundheit

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Baschung Pfister, P., de Bruin, E. D., Sterkele, I., Maurer, B., de Bie, R. A., & Knols, R. H. (2018). Manual muscle testing and hand-held dynamometry in people with inflammatory myopathy : an intra- and interrater reliability and validity study. Plos One, 13(3). https://doi.org/10.21256/zhaw-4861

Baschung Pfister, P. et al. (2018) ‘Manual muscle testing and hand-held dynamometry in people with inflammatory myopathy : an intra- and interrater reliability and validity study’, PLOS ONE, 13(3). Available at: https://doi.org/10.21256/zhaw-4861.

P. Baschung Pfister, E. D. de Bruin, I. Sterkele, B. Maurer, R. A. de Bie, and R. H. Knols, “Manual muscle testing and hand-held dynamometry in people with inflammatory myopathy : an intra- and interrater reliability and validity study,” PLOS ONE, vol. 13, no. 3, 2018, doi: 10.21256/zhaw-4861.

BASCHUNG PFISTER, Pierrette, Eling D. DE BRUIN, Iris STERKELE, Britta MAURER, Rob A. DE BIE und Ruud H. KNOLS, 2018. Manual muscle testing and hand-held dynamometry in people with inflammatory myopathy : an intra- and interrater reliability and validity study. PLOS ONE. 2018. Bd. 13, Nr. 3. DOI 10.21256/zhaw-4861

Baschung Pfister, Pierrette, Eling D. de Bruin, Iris Sterkele, Britta Maurer, Rob A. de Bie, and Ruud H. Knols. 2018. “Manual Muscle Testing and Hand-Held Dynamometry in People with Inflammatory Myopathy : An Intra- and Interrater Reliability and Validity Study.” Plos One 13 (3). https://doi.org/10.21256/zhaw-4861.

Baschung Pfister, Pierrette, et al. “Manual Muscle Testing and Hand-Held Dynamometry in People with Inflammatory Myopathy : An Intra- and Interrater Reliability and Validity Study.” Plos One, vol. 13, no. 3, 2018, https://doi.org/10.21256/zhaw-4861.