Reorganized Force Control in Elbow Pain Patients During Isometric Wrist Extension

Mista, Christian Ariel; Monterde, Sónia; Inglés, M.; Salvat, Isabel; Graven‐Nielsen, Thomas

doi:10.1097/ajp.0000000000000596

Cited by 8 publications

(5 citation statements)

References 44 publications

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“…In previous studies, no difference was found in force steadiness (SD) during isometric wrist extension between patients with elbow pain and healthy controls [18], whereas force steadiness (CV) has been shown to decrease during experimental muscle pain (hypertonic saline injection) [19]. Contrary, a study investigating discomfort during 96 minutes of sitting on a force platform found that an increase in variability (SD) and a decrease in complexity (SaEn) of the center of pressure signal was associated with increased discomfort [7].…”

Section: Discussionmentioning

confidence: 88%

Force Variability and Musculoskeletal Pain in Blue-Collar Workers

Norheim

Bønløkke

Omland

et al. 2018

Advances in Intelligent Systems and Computing

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Blue-collar workers with physically demanding occupations have a high prevalence of musculoskeletal disorders accompanied by pain. Previous research has suggested that reduced motor variability may increase the risk of developing musculoskeletal disorders. Here we present preliminary data from an ongoing cross-sectional examination of physical performance in elderly manual workers. This paper includes data from 20 male workers (age 52-70 years). Handgrip force variability was measured using a digital hand dynamometer during an endurance trial where the workers exerted 30% of their maximal isometric contraction force until task failure. Absolute variability (standard deviation), relative variability (coefficient of variation), and the complexity of the force signal (sample entropy) were computed. The workers were dichotomized into two groups: no to mild pain/discomfort (No pain) and moderate to severe pain/discomfort (Pain) to investigate the effects of musculoskeletal pain on force variability. This dichotomy was done based on the rating of pain/discomfort within the last seven days, where workers reporting ≥3 score in the upper extremities were allocated to the pain group (Pain, n = 9, No pain, n = 11). No significant between-group differences in force variability during the endurance trial were found. Both absolute and relative variability increased significantly over time. These preliminary data do not support a difference in force variability between blue-collar workers with or without musculoskeletal pain or discomfort in the upper extremities.

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Section: Discussionmentioning

confidence: 88%

Force Variability and Musculoskeletal Pain in Blue-Collar Workers

Norheim

Bønløkke

Omland

et al. 2018

Advances in Intelligent Systems and Computing

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“…87,103,184 Interestingly, the distant hyperalgesia is not normalised when patients with osteoarthritis still have pain even after a revision total knee replacement 220 in contrast to the normalisation seen in patients who experience a significant pain reduction after total knee replacement. 87 Spreading hyperalgesia has also been reported in several other conditions, for example, patients with patellofemoral pain, 99,100 LBP, 156,176 neck pain, 42 lateral epicondylalgia, 106,163 and partly in the recovery phase from a tibial fracture. 134 In systemic rheumatologic diseases such as rheumatoid arthritis, pressure pain thresholds are reduced in patients compared with controls, both at the painful joint and occasionally outside.…”

Section: Spreading and Widespread Hyperalgesiamentioning

confidence: 88%

“…1 Hyperalgesia assessed by pressure algometry across painful structures is regularly reported, for example, in patients with painful knee and hip osteoarthritis compared with asymptomatic controls 14,87,103,188 as well as in patients with patellofemoral pain, 99,100 LBP, 156 neck pain, 42 and lateral epicondylalgia. 163,222 Detailed analysis of multiple pressure pain assessment sites around the osteoarthritis knee joint demonstrates that not all sites are equally hyperalgesic and interestingly not clearly correlated to MRI-verified synovitis. 188 After intraarticular injection of analgesia and steroid into the osteoarthritic knee, the peripatellar pressure hyperalgesia was reduced.…”

Section: Localised Hyperalgesiamentioning

confidence: 99%

Mechanisms and manifestations in musculoskeletal pain: from experimental to clinical pain settings

Graven‐Nielsen

2022

Pain

Self Cite

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“…Similarly, a different study reported differences in the co-activation of muscles during an isometric endurance task, displaying a reduced activity of the ECR at the end of the contraction (Alizadehkhaiyat et al, 2007b). In addition, Mista et al (2018) in concluded that there is a reorganization of force control strategies in chronic LE patients based on the analysis of isometric contractions. On the other hand, previous studies had evidenced a higher fatigability of the ECR in LE during isometric contractions (Rojas et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

Analysis of Muscle Load-Sharing in Patients With Lateral Epicondylitis During Endurance Isokinetic Contractions Using Non-linear Prediction

et al. 2019

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The aim of this paper is to analyze muscle load-sharing in patients with Lateral Epicondylitis during dynamic endurance contractions by means of non-linear prediction of surface EMG signals. The proposed non-linear cross-prediction scheme was used to predict the envelope of an EMG signal and is based on locally linear models built in a lag-embedded Euclidean space. The results were compared with a co-activation index, a common measure based on the activation of a muscle pair. Non-linear prediction revealed changes in muscle coupling, that is load-sharing, over time both in a control group and Lateral Epicondylitis (p < 0.05), even when subjects did not report pain at the end of the exercise. These changes were more pronounced in patients, especially in the first part of the exercise and up to 50% of the total endurance time (p < 0.05). By contrast, the co-activation index showed no differences between groups. Results reflect the changing nature of muscular activation strategy, presumably because of the mechanisms triggered by fatigue. Strategies differ between controls and patients, pointing to an altered coordination in Lateral Epicondylitis.

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Reorganized Force Control in Elbow Pain Patients During Isometric Wrist Extension

Abstract: The larger change in force direction in pain patients implies redistribution of loads across the arm as an associated effect of pain.

Cited by 8 publications

References 44 publications

Force Variability and Musculoskeletal Pain in Blue-Collar Workers

Force Variability and Musculoskeletal Pain in Blue-Collar Workers

Mechanisms and manifestations in musculoskeletal pain: from experimental to clinical pain settings

Analysis of Muscle Load-Sharing in Patients With Lateral Epicondylitis During Endurance Isokinetic Contractions Using Non-linear Prediction

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