Effects of overhead work configuration on muscle activity during a simulated drilling task

Maciukiewicz, Jacquelyn M.; Cudlip, Alan C.; Chopp-Hurley, Jaclyn N.; Dickerson, Clark R.

doi:10.1016/j.apergo.2015.08.005

Cited by 25 publications

(15 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recent studies continue to address aspects of overhead work: the effect of cycle time on shoulder fatigue [11] and the effects of overhead work configuration on muscle activity [48]. Interactions between point of force application and direction were noted through the use of EMG recordings from shoulder muscles thereby demonstrating that this is a multidimensional environment.…”

Section: Overhead Work and Shoulder Tendinopathymentioning

confidence: 99%

Occupational Risk Factors for Shoulder Tendon Disorders 2015 Update

Rhode¹

2015

MOJOR

View full text Add to dashboard Cite

Rotator cuff (RC) injuries have been classified as intrinsic when that tendon injury results from direct tendon overload, intrinsic degeneration, or other insult. RC injury mechanisms are Case Report AbstractEvidence for work-related exposure as a cause of shoulder tendinopathy is updated. Previous studies indicated that forceful movements combined with hands above head increases the likelihood of shoulder disorders. Hands above the shoulder and arm flexion or abduction at greater than 60° combined with forceful or repetitious motions results in significantly increased occurrence of shoulder tendinopathy. Shoulder disease is multifactorial with genetics, age, and bodyweight correlated with increased occurrence though they are minor factors for young workers. Normal aging of the rotator cuff may underlie much of shoulder disease for individuals older than 60 thereby presenting a complication for the determination of work-related rotator cuff tears in this group. In contrast, there is sufficient evidence to support work-related musculoskeletal disorders of the shoulder in younger individuals who have not undergone the aging processes. Numerous reviews along with individual cross sectional and longitudinal studies conclude that shoulder tendinopathy can result from work-related exposures based on the odds and relative risks of occurrence in a working population compared to a group that has not been similarly exposed to comparable manual effort.

show abstract

Section: Overhead Work and Shoulder Tendinopathymentioning

confidence: 99%

Occupational Risk Factors for Shoulder Tendon Disorders 2015 Update

Rhode¹

2015

MOJOR

View full text Add to dashboard Cite

show abstract

“…This result suggests that the efforts spent on horizontal body balance takes a great portion in total efforts. The study of Maciukiewicz et al (2016) [32] indicates that for upward overhead drilling, further forward reach distance results in greater muscle demands (measured by EMG of upper extremity muscles). Similar results were reported by Shin & Yoo [33]: overhead work with a forward reach distance of 30 cm leads to stronger EMG activities of upper trapezius, lower trapezius, anterior deltoid and serratus anterior than that with the distance of 15 cm.…”

Section: Overhead Workingmentioning

confidence: 99%

A Full-Chain OpenSim Model and Its Application on Posture Analysis of an Overhead Drilling Task

Chang

Chablat

Bennis

et al. 2019

Lecture Notes in Computer Science

View full text Add to dashboard Cite

Biomechanical motion simulation and kinectic analysis of human joints and muscles provide insights into Musculoskeletal disorders. OpenSim is an open-source platform that give easy access to biomechanical analysis, especially of muscles. The biomechanical analysis in OpenSim is based on pre-defined human models. Among the dozens of models available right now, none covers the muscles and joints of all the body parts. In view of the fact that most human motions are systemic, the lack of a comprehensive model prohibits synthesized and systematical biomechanical analysis. The aim of this research is to develop an OpenSim model which enables the full-chain dynamic analysis of tasks involving multi-bodies. The model is developed based on two existing models. It consists of 45 body segments, 424 muscles and 39 degrees of freedom. The model was then used to simulate an overhead drilling task. Six drilling postures are analyzed, and the estimated joint moments and muscle activations are compared.

show abstract

“…However, SEMG of the trapezius has often been applied to assess total shoulder muscle load [2,10,[27][28][29]. At the same time, the deltoid muscle has been widely used to study shoulder muscle load [30][31][32][33]. Muscle activity was monitored for the upper trapezius (UT) and the middle deltoid (MD), as overhead work is reportedly primarily…”

Section: Test Proceduresmentioning

confidence: 99%

“…Prior to the trials, the subjects accomplished 6 standardized muscle-specific maximum voluntary isometric contractions (MVC) measurements. For the UT muscle, the subjects were asked to lay prone, with their arms abducted to 90° and their thumbs facing their head, while they were pushing in the same direction against resistance [30]. For the MD muscle, the subjects, with their arms abducted to 90° and thumbs facing forwards, were pushing upwards against resistance [30].…”

Section: Experimental Design Apparatusmentioning

confidence: 99%

“…For the UT muscle, the subjects were asked to lay prone, with their arms abducted to 90° and their thumbs facing their head, while they were pushing in the same direction against resistance [30]. For the MD muscle, the subjects, with their arms abducted to 90° and thumbs facing forwards, were pushing upwards against resistance [30]. For each muscle, a minimum of 3 MVCs were used for collecting the MVCs, and each test lasted 5 s. Mathiassen et al [34] suggested that the highest peak value obtained from 3 successive MVCs should be chosen as the maximum.…”

Section: Experimental Design Apparatusmentioning

confidence: 99%

See 1 more Smart Citation

Shoulder girdle muscle activity and fatigue during automobile chassis repair

Tian¹,

Yu²,

Chu³

et al. 2019

Int J Occup Med Environ Health

View full text Add to dashboard Cite

Objectives: The objective of this study was to assess the postures that were commonly used in automobile chassis repair operations, and to evaluate shoulder girdle muscle fatigue for different combinations of the weight of hand-tools. Material and Methods: Two right muscles, including upper trapezius (UT) and middle deltoid (MD), were selected. Surface electromyography (SEMG) and a perceived level of discomfort (PLD) were used to assess the degree of shoulder girdle fatigue. Fifteen healthy young male subjects from the Northwestern Polytechnical University participated in the test. The test consisted of assuming 4 different postures and maintaining each of them for 60 s. The 4 postures varied in terms of dumbbell weights, standing for the hand-tools weight: W1 was 0.48 kg and W2 was 0.75 kg; the 4 shoulder postures were shoulder flexions of 150°, 120°, 90°, and 60°, combined with an included elbow angle of 180°, 150°, 120° and 90°, respectively. The experimental sequences were randomly selected. The signals of SEMG and the values of PLD in the shoulder girdle were recorded in 60 s. All subjects completed the whole test. The repeated measure analysis of variance (ANOVA) was performed to ascertain differences between dumbbell weight (0.48 kg and 0.75 kg) and shoulder postures (150°/180°, 120°/150°, 90°/120° and 60°/90°). The Friedman test was utilized to determine the significant differences for UT(PLD) and MD(PLD) on shoulder postures. Spearman's correlation was used to analyze the relationship between the subjective and objective measurements. Results: Significant correlational relationships existed between the UT percentage of the maximal voluntary electrical activation (%MVE) and UT(PLD) (r = 0.459, p < 0.01), between MD(%MVE) and MD(PLD) (r = 0.821, p < 0.01). The results showed that SEMG and PLD of the 4 postures under analysis differed significantly (p < 0.05). Conclusions: It was indicated that posture T4 (shoulder forward flexion 60° and included elbow angle 90°) resulted in the lowest fatigue, both in terms of the objective measure and the subjective perception, which meant that this posture was more ergonomic. Int J Occup Med Environ Health. 2019;32(4):537 -52

show abstract

Effects of overhead work configuration on muscle activity during a simulated drilling task

Cited by 25 publications

References 19 publications

Occupational Risk Factors for Shoulder Tendon Disorders 2015 Update

Occupational Risk Factors for Shoulder Tendon Disorders 2015 Update

A Full-Chain OpenSim Model and Its Application on Posture Analysis of an Overhead Drilling Task

Shoulder girdle muscle activity and fatigue during automobile chassis repair

Contact Info

Product

Resources

About