scholarly journals Can a metric combining arm elevation and trapezius muscle activity predict neck/shoulder pain? A prospective cohort study in construction and healthcare

2020 ◽  
Author(s):  
Suzanne Lerato Merkus ◽  
Svend Erik Mathiassen ◽  
Lars-Kristian Lunde ◽  
Markus Koch ◽  
Morten Wærsted ◽  
...  
Keyword(s):  
Shoulder Pain ◽  
Muscle Activity ◽  
Healthcare Workers ◽  
Trapezius Muscle ◽  
Upper Trapezius ◽  
Neck And Shoulder Pain ◽  
Upper Trapezius Muscle ◽  
Arm Elevation ◽  
Uncertain Time

Abstract Objective To determine whether a composite metric of arm elevation and trapezius activity (i.e. neck/shoulder load) is more strongly associated with the 2-year course of neck and shoulder pain intensity (NSPi) among construction and healthcare workers than each exposure separately. Methods Dominant arm elevation and upper trapezius muscle activity were estimated in construction and healthcare employees (n = 118) at baseline, using accelerometry and normalized surface electromyography (%MVE), respectively. At baseline and every 6 months for 2 years, workers reported NSPi (score 0–3). Compositions of working time were determined for arm elevation (< 30°; 30–60°;  > 60°), trapezius activity (< 0.5%; 0.5–7.0%; > 7.0%MVE), and a composite metric “neck/shoulder load” (restitution, low, medium, and high load). Associations between each of these three compositions and the 2-year course of NSPi were determined using linear mixed models. Results Associations between exposure compositions and the course of NSPi were all weak and in general uncertain. Time spent in 0.5–7.0%MVE showed the largest and most certain association with changes in NSPi during follow-up (β = − 0.13; p = 0.037; corresponding to a −0.01 change in NPSi every 6 months). Among pain-free workers at baseline, medium (β = − 0.23; p = 0.039) and high (β = 0.15; p = 0.031) neck/shoulder load contributed the most to explaining changes in NSPi. Conclusion The composite metric of neck/shoulder load did not show a stronger association with the course of NSPi than arm elevation or trapezius activity alone in the entire population, while some indications of a stronger association were found among those who were pain-free at baseline.

Cross-sectional study of upper trapezius muscle activity and self-reported neck/shoulder pain

2007 ◽  
Author(s):  
Nathan B. Fethke ◽  
Fred Gerr ◽  
Daniel C. Anton ◽  
Joseph E. Cavanaugh ◽  
Thomas M. Cook
Keyword(s):  
Shoulder Pain ◽  
Muscle Activity ◽  
Trapezius Muscle ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Upper Trapezius ◽  
Upper Trapezius Muscle

Cross-sectional Study of Upper Trapezius Muscle Activity and Self-Reported Neck/Shoulder Pain

2007 ◽  
Vol 51 (15) ◽  
pp. 962-966
Author(s):  
Nathan B. Fethke ◽  
Fred Gerr ◽  
Daniel C. Anton ◽  
Joseph E. Cavanaugh ◽  
Thomas M. Cook
Keyword(s):  
Shoulder Pain ◽  
Muscle Activity ◽  
Trapezius Muscle ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Root Mean Square Amplitude ◽  
Cross Sectional ◽  
Upper Trapezius ◽  
Upper Trapezius Muscle ◽  
Summary Measures

The purpose of this cross-sectional study was to compare the observed associations between upper trapezius muscle activity, as estimated with several summary measures obtained from surface electromyography (EMG), and self-reported neck/shoulder pain among a sample of 231 manufacturing workers. EMG methods used in this study included mean root-mean-square amplitude, the amplitude probability distribution function (APDF), EMG gaps analysis, and clustered exposure variation analysis. The observed seven-day prevalence of neck/shoulder pain was 13.9%. Of the EMG summary measures, only the 90 th percentile of the APDF was significantly associated with symptoms, with crude and adjusted odds ratios of 2.57 (1.02–6.49) and 2.78 (1.07–7.21) per natural log unit, respectively. This study was largely inconclusive due to the similarity in the distributions of the summary measures between symptomatic and non-symptomatic participants, and explicit measures of posture and repetition may produce stronger associations with symptoms.

scholarly journals Myofascial Treatment for Microcirculation in Patients with Postural Neck and Shoulder Pain

Diagnostics ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 2226
Author(s):  
Jian-Guo Bau ◽  
Shyi-Kuen Wu ◽  
Bo-Wen Huang ◽  
Tony Tung-Liang Lin ◽  
Shih-Chung Huang
Keyword(s):  
Blood Flow ◽  
Shoulder Pain ◽  
Trapezius Muscle ◽  
Neck Muscle ◽  
Doppler Flowmetry ◽  
Upper Trapezius ◽  
Neck And Shoulder Pain ◽  
Blood Flow Ratio ◽  
Upper Trapezius Muscle ◽  
Patient Groups

Vascular impairment is a crucial factor associated with chronic muscle pain, but relevant research from the microcirculatory aspect is lacking. Here, we investigated the differences in neck muscle microcirculation detected through laser-doppler flowmetry (LDF) and cervical biomechanics by a videofluoroscopic image in asymptomatic participants and patients with postural neck and shoulder pain. To understand the mechanism behind the effect of myofascial treatment, transverse friction massage (TFM) was applied and the immediate effects of muscular intervention on microcirculation were monitored. In total, 16 asymptomatic participants and 22 patients (mean age = 26.3 ± 2.4 and 25.4 ± 3.2 years, respectively) were recruited. Their neck muscle microcirculation and spinal image sequence were assessed. The differences in the baseline blood flow between the asymptomatic and patient groups were nonsignificant. However, the standard deviations in the measurements of the upper trapezius muscle in the patients were significantly larger (p < 0.05). Regarding the TFM-induced responses of skin microcirculation, the blood flow ratio was significantly higher in the patients than in the asymptomatic participants (p < 0.05). In conclusion, postintervention hyperemia determined through noninvasive LDF may be an indicator for the understanding of the mechanism underlying massage therapies and the design of interventions for postural pain.

scholarly journals Muscle Pain Induces a Shift of the Spatial Distribution of Upper Trapezius Muscle Activity During a Repetitive Task

2017 ◽  
Vol 33 (11) ◽  
pp. 1006-1013 ◽  
Author(s):  
Deborah Falla ◽  
Corrado Cescon ◽  
Rene Lindstroem ◽  
Marco Barbero
Keyword(s):  
Spatial Distribution ◽  
Muscle Activity ◽  
Muscle Pain ◽  
Trapezius Muscle ◽  
Upper Trapezius ◽  
Upper Trapezius Muscle

scholarly journals O5A.6 Objectively assessed arm elevation and the course of neck and shoulder pain during a 2-year follow-up: a compositional approach

2019 ◽  
Vol 76 (Suppl 1) ◽  
pp. A42.3-A43
Author(s):  
Suzanne Merkus ◽  
Lars-Kristian Lunde ◽  
Markus Koch ◽  
Stein Knardahl ◽  
Kaj Bo Veiersted
Keyword(s):  
Data Analysis ◽  
Shoulder Pain ◽  
Compositional Data ◽  
Healthcare Personnel ◽  
Compositional Data Analysis ◽  
Compositional Approach ◽  
Neck And Shoulder Pain ◽  
Statistical Analysis Method ◽  
Arm Elevation

PurposeTo use a compositional data analysis approach and objective exposure assessments to study the association between the duration of arm elevation and the course of neck and shoulder pain (NSP) during a 2-year follow-up in physically demanding occupations.MethodsConstruction (n=59) and healthcare (n=59) employees wore accelerometers on the dominant upper-arm during a full working day at baseline. Objective assessments using accelerometers addresses biases found in previous studies that estimate duration of arm elevation with self-reports. At baseline and every 6 months for two years, participants reported on NSP (scale 0–3). Duration of arm elevation within predefined ranges (<30°; 30–60°; ≥60) formed the parts of the composition. Compositional data analysis is a new statistical analysis method within occupational health and it is the correct way of analysing data with a compositional nature. The associations between the relative importance of the duration within the levels of arm elevation and the course of NSP during the 2-year follow-up were estimated with compositional linear mixed models, adjusted for confounders.ResultsIn non-adjusted analyses, only duration arm elevation <30° was associated with NSP at baseline (β = 0.37; p=0.015). Duration arm elevation <30° had a tendency to be associated with an improvement in NSP over the 2-year follow-up (<30°*time (β=-0.07; p=0.089)). Neither duration 30–60° nor ≥60 were associated with the course of NSP during follow-up. After adjusting for confounders, none of the durations of arm elevation were associated with the course of NSP over the 2-year period (<30° and NSP (β = 0.20; p=0.126); <30°*time (β=-0.06; p=0.097)).ConclusionAmong construction and healthcare personnel, duration of working in awkward arm elevation postures was not associated with the course of NSP over a 2-year period. Arm elevation alone, without considering force exertion, may not be sufficient to influence the course of NSP.

scholarly journals Visualization of chronic neck—shoulder pain: Impaired microcirculation in the upper trapezius muscle in chronic cervico-brachial pain

1998 ◽  
Vol 48 (3) ◽  
pp. 189-194 ◽  
Author(s):  
R. Larsson ◽  
H. Cai ◽  
Q. Zhang ◽  
P. Å. Öberg ◽  
S. E. Larsson
Keyword(s):  
Shoulder Pain ◽  
Trapezius Muscle ◽  
Upper Trapezius ◽  
Upper Trapezius Muscle

The change in spatial distribution of upper trapezius muscle activity is correlated to contraction duration

2008 ◽  
Vol 18 (1) ◽  
pp. 16-25 ◽  
Author(s):  
Dario Farina ◽  
Frédéric Leclerc ◽  
Lars Arendt-Nielsen ◽  
Olivier Buttelli ◽  
Pascal Madeleine
Keyword(s):  
Spatial Distribution ◽  
Muscle Activity ◽  
Trapezius Muscle ◽  
Upper Trapezius ◽  
Contraction Duration ◽  
Upper Trapezius Muscle

Serratus Anterior and Upper Trapezius Muscle Activity During Upper-Body Exercises

2014 ◽  
Vol 46 ◽  
pp. 248
Author(s):  
Nicole L. Rogers ◽  
Joaquin Calatayud ◽  
Sebastien Borreani ◽  
Juan C. Colado ◽  
N Travis Triplett ◽  
...  
Keyword(s):  
Muscle Activity ◽  
Trapezius Muscle ◽  
Upper Body ◽  
Serratus Anterior ◽  
Upper Trapezius ◽  
Upper Trapezius Muscle
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