Hand-held dynamometry for assessment of muscle strength in patients with inflammatory myopathies

Saygın, Didem; Oddis, Chester V.; Moghadam-Kia, Siamak; Rockette‐Wagner, Bonny; Neiman, Nicole; Koontz, Diane; Aggarwal, Rohit

doi:10.1093/rheumatology/keaa419

Cited by 10 publications

(4 citation statements)

References 45 publications

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“…Moreover, fat infiltration in the muscle may distort muscle architecture, further resulting in the loss of muscle strength 13 . In previous study, muscle strength was assessed using a relatively inexpensive handheld dynamometry or manual muscle test 14 . But these approaches present some limitations, such as strong subjectivity and low accuracy.…”

Section: T1wimentioning

confidence: 99%

Low thigh muscle strength in relation to myosteatosis in patients with type 2 diabetes mellitus

Huang

Yan

Zhu

et al. 2023

Sci Rep

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This study aimed to investigate the association of thigh muscle fat infiltration by quantitative MRI with muscle strength in patients with type 2 diabetes mellitus (T2DM). Seventy T2DM patients and sixty control subjects (71 males; age: 52 ± 8 years) underwent 3.0T MRI and isokinetic muscle strength measurements to obtain the skeletal muscle index (SMI), intermuscular adipose tissue (IMAT) proton density fat fraction (PDFF), intramuscular fat (IMF) PDFF, peak torque (PT) and total work (TW) of knee extensors and flexors. The differences of measurements between T2DM patients and asymptomatic volunteers were compared. Multivariate regression analysis was used to determine significant predictors of thigh extension and flexion strength. The SMI, IMAT and IMF PDFF of thigh muscles in T2DM patients were higher than that in the control group (p < 0.001), while PT and TW were lower than those in the control subjects (p < 0.05). Both IMF and IMAT PDFF were negatively correlated with PT, TW in participants with T2DM (extensors: r = − 0.72, − 0.70, p < 0.001; r = − 0.62, − 0.56, p < 0.05. flexors: r = − 0.37, − 0.43, p < 0.05; r = − 0.39, − 0.46, p < 0.05). Moderate and strong correlations between HOMA-IR and muscle strength measurements, muscle PDFFs were observed in extensors and flexors. IMF PDFF and age were the statistically significant predictor of PT and TW of extensors of thigh in multivariate regression analysis. Therefore, the thigh muscle PDFF increased was associated with muscle strength decreased in T2DM patients beyond SMI. Age are also important factors influencing thigh muscle PDFF and strength in T2DM patients.

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Section: T1wimentioning

confidence: 99%

Low thigh muscle strength in relation to myosteatosis in patients with type 2 diabetes mellitus

Huang

Yan

Zhu

et al. 2023

Sci Rep

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“…The strength generated by the trunk and hip muscles during maximum isometric voluntary contraction was assessed using a manual digital dynamometer (MicroFET 2, Hoggan Health Industries, USA). This instrument demonstrated good test-retest reliability in evaluating extension and flexion, as well as rotation strength of the trunk and hip muscles [ 30 , 31 ]. Initially, participants were familiarized before the measurements were taken.…”

Section: Methodsmentioning

confidence: 99%

Efficacy of Core Muscle Exercise Combined with Interferential Therapy in Alleviating Chronic Low Back Pain in High-Performance Fighter Pilots: A Randomized Controlled Trial

Zuo,

Zheng,

et al. 2024

BMC Public Health

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Background Chronic low back pain (LBP) related to flight is a prevalent health issue in military aviation, impacting pilots. The objective of this investigation was to ascertain if the application of core muscle training in conjunction with interferential current (IFC) therapy results in a reduction in pain severity and associated disability, consequently enhancing core muscle functionality in Chinese Air Force high-performance fighter pilots experiencing chronic LBP. Methods Fifty-three fighter pilots with chronic LBP were randomized into 3 groups: a core muscle exercise combined with IFC group (CG, n = 19), a core muscle exercise group (EG, n = 19), and an IFC group (IG, n = 15). The three groups underwent therapeutic intervention 5 times a week for 12 weeks. The primary outcomes were pain intensity, Oswestry Disability Index (ODI) score and SF-12 health-related quality of life (PCS and MCS) score. Secondary outcomes included evaluations of trunk muscle strength, endurance, and range of motion (ROM) during medial/lateral rotation to assess muscle functionality. Measurements were obtained both before and after the implementation of the intervention therapy. Results After 12 weeks of intervention therapy, all the health condition parameters significantly improved among the three groups. However, the CG had a significant improvement in pain intensity compared to the EG (MD = − 0.84 scores; 95% CI = − 1.54 to − 0.15; p = 0.013) and the IG (MD = − 1.22 scores; 95% CI = − 1.96 to − 0.48; p = 0.000). Additionally, the CG led to greater conservation of ODI and improved SF-12 PCS scores than did the IG (p < 0.05). Finally, compared with those at baseline, the core muscle function parameters in the CG and EG improved significantly at the end of the study, but no statistically significant differences were observed between the two groups (p > 0.05). Conclusion Among participants with chronic LBP, three intervention therapies appear effective in reducing pain, diminishing disability, and enhancing quality of life. Also, combined therapy significantly improved pain and disability compared to the other two monotherapies; moreover, combined therapy and core muscle exercise provided similar benefits in terms of core muscle function after 12 weeks of intervention therapy.

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“…In clinical settings, the strength of the quadriceps and hamstrings is assessed using manual muscle tests (MMT) or handheld dynamometers (HHDs) that can quantitatively represent muscle strength 8 . However, MMT cannot provide a quantitative measure of muscle strength, making it difficult to objectively record changes in strength over time.…”

Section: Introductionmentioning

confidence: 99%

Design and validation of a wearable dynamometry system for knee extension-flexion torque measurement

Park,

Myong,

Cho

et al. 2024

Sci Rep

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Muscle strength assessments are vital in rehabilitation, orthopedics, and sports medicine. However, current methods used in clinical settings, such as manual muscle testing and hand-held dynamometers, often lack reliability, and isokinetic dynamometers (IKD), while reliable, are not easily portable. The aim of this study was to design and validate a wearable dynamometry system with high accessibility, accuracy, and reliability, and to validate the device. Therefore, we designed a wearable dynamometry system (WDS) equipped with knee joint torque sensors. To validate this WDS, we measured knee extension and flexion strength in 39 healthy adults using both the IKD and WDS. Comparing maximal isometric torque measurements, WDS and IKD showed strong correlation and good reliability for extension (Pearson’s r: 0.900; intraclass correlation coefficient [ICC]: 0.893; standard error of measurement [SEM]: 9.85%; minimal detectable change [MDC]: 27.31%) and flexion (Pearson’s r: 0.870; ICC: 0.857; SEM: 11.93%; MDC: 33.07%). WDS demonstrated excellent inter-rater (Pearson’s r: 0.990; ICC: 0.993; SEM: 4.05%) and test–retest (Pearson’s r: 0.970; ICC: 0.984; SEM: 6.15%) reliability during extension/flexion. User feedback from 35 participants, including healthcare professionals, underscores WDS's positive user experience and clinical potential. The proposed WDS is a suitable alternative to IKD, providing high accuracy, reliability, and potentially greater accessibility.

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Hand-held dynamometry for assessment of muscle strength in patients with inflammatory myopathies

Cited by 10 publications

References 45 publications

Low thigh muscle strength in relation to myosteatosis in patients with type 2 diabetes mellitus

Low thigh muscle strength in relation to myosteatosis in patients with type 2 diabetes mellitus

Efficacy of Core Muscle Exercise Combined with Interferential Therapy in Alleviating Chronic Low Back Pain in High-Performance Fighter Pilots: A Randomized Controlled Trial

Design and validation of a wearable dynamometry system for knee extension-flexion torque measurement

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