Impact of posture and upper-limb muscle activity on grip strength

Jain, Rahul; Meena, M.L.; Sain, Manoj Kumar; Dangayach, G.S.

doi:10.1080/10803548.2018.1501972

Cited by 19 publications

(7 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In the present study, we regarded the variation of hand grip strength for holding a cleaner handle as a phenomenon that could naturally happen during vacuuming with a stick-type vacuum cleaner, and thus the grip strength was not considered a parameter that had to be observed separately with interest during testing. However, it has been demonstrated that grip strength for holding a handle is associated with the muscle activities (especially, the ECU and BR) of the upper limbs [58,59]. Thus, further studies to find out the extent to which the grip strength contributes to the muscle activities of the upper limb could be useful for advancing the validity of the present study.…”

Section: Implications and Limitationsmentioning

confidence: 77%

A Study on sEMG-Based Motor Variability and Functional Connectivity of the Upper Limb Depending on Weight Distributions in a Handle of a Cordless Stick-Type Vacuum Cleaner

Kang

Chang

2022

Sensors

View full text Add to dashboard Cite

This study investigated the muscle activities, motor variability, and functional connectivity of the upper limb as a function of weight distributions in a handle of a cordless stick-type vacuum cleaner. Eighteen female college students with experience of vacuum cleaner-use participated in testing. Five handles with different centers of mass (CM) were prepared (centroid, top-rear, top-front, bottom-front, and bottom-rear), and electromyography for the muscles of the upper limb were measured during vacuuming. The results showed that the %MVC values of the Extensor Carpi Ulnaris (p = 0.0038) and Deltoid Middle (p = 0.0094) increased but that of the Biceps Brachii (p = 0.0001) decreased, as the CM moved from the top to bottom area of the handle. The motor variability of the Extensor Carpi Ulnaris (p = 0.0335) and Brachioradialis (p = 0.0394) significantly varied depending on the CM locations but failed to show significance in the post-hoc analyses. Lastly, the functional connectivity values of the muscle pairs such as the Extensor Carpi Ulnaris–Deltoid Middle (p = 0.0016), Extensor Carpi Ulnaris–Upper Trapezius (p = 0.0174), Brachioradialis–Biceps Brachii (p = 0.0356), and Biceps Brachii–Upper Trapezius (p = 0.0102) were significantly altered as a function of the CM locations. The lowest functional connectivity was found with the handle of which CM was at centroid.

show abstract

Section: Implications and Limitationsmentioning

confidence: 77%

A Study on sEMG-Based Motor Variability and Functional Connectivity of the Upper Limb Depending on Weight Distributions in a Handle of a Cordless Stick-Type Vacuum Cleaner

Kang

Chang

2022

Sensors

View full text Add to dashboard Cite

show abstract

“…The daily manual operation should be performed in the posture with optimum grip strength which is suggested for good occupational health and their safety at workplace. The suitable grip strength data is recommended for tool/equipment design for manual working in unorganized sectors 6) .…”

Section: Introductionmentioning

confidence: 99%

An Investigation of Ergonomic Risk for Work-Related Musculoskeletal Disorders with Hand-Held Drilling

Sharma¹,

Sain²,

Meena³

et al. 2023

Evergreen

View full text Add to dashboard Cite

Woodworkers commonly perform operations like sawing, chipping, planning, shaping, nailing and drilling in daily work environment. This study focused the consequences of exposure to hand arm vibration among woodworkers working with handheld drill machine. Subjects' hand grip strength was measured by a digital hand grip dynamometer. The vibration generated by a handheld drill machine was the main concern and hence the same handheld drill machine was used during this study. The results showed that workers exposed to hand arm vibration had higher prevalence of musculoskeletal disorders. Future studies should include other contributing factors also like ergonomic interventions and workers' postures.

show abstract

“…Repetitive tasks in awkward postures are a major risk factor. The posture of the upper limbs and the applied force are related [ 3 , 4 ]. Maximum force can be developed with the shoulder forward at 45°, elbow at 90°, and a neutral position of the wrist and forearm [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

“…The posture of the upper limbs and the applied force are related [ 3 , 4 ]. Maximum force can be developed with the shoulder forward at 45°, elbow at 90°, and a neutral position of the wrist and forearm [ 3 ]. This posture also allows for better efficiency of force production.…”

Section: Introductionmentioning

confidence: 99%

Does the introduction of a cobot change the productivity and posture of the operators in a collaborative task?

Bouillet,

Lemonnier,

Clanche

et al. 2023

PLoS ONE

View full text Add to dashboard Cite

Musculoskeletal disorders (MSDs) are the main occupational diseases and are pathologies of multifactorial origin, with posture being one of them. This creates new human-robot collaboration situations that can modify operator behaviors and performance in their task. These changes raise questions about human-robot team performance and operator health. This study aims to understand the consequences of introducing a cobot on work performance, operator posture, and the quality of interactions. It also aims to evaluate the impact of two levels of difficulty in a dual task on these measures. For this purpose, thirty-four participants performed an assembly task in collaboration with a co-worker, either a human or a cobot with two articulated arms. In addition to this motor task, the participants had to perform an auditory task with two levels of difficulty (dual task). They were equipped with seventeen motion capture sensors. The collaborative work was filmed with a camera, and the actions of the participants and co-worker were coded based on the dichotomy of idle and activity. Interactions were coded based on time out, cooperation, and collaboration. The results showed that performance (number of products manufactured) was lower when the participant collaborated with a cobot rather than a human, with also less collaboration and activity time. However, RULA scores were lower—indicating a reduced risk of musculoskeletal disorders—during collaboration with a cobot compared to a human. Despite a decrease in production and a loss of fluidity, likely due to the characteristics of the cobot, working in collaboration with a cobot makes the task safer in terms of the risk of musculoskeletal disorders.

show abstract

Impact of posture and upper-limb muscle activity on grip strength

Abstract: Higher values of GS were attained in standing postures which may result in attainment of higher performance levels by the workers. The outcomes justify the importance of correct postures during manual work in industries employing traditional methods.

Cited by 19 publications

References 35 publications

A Study on sEMG-Based Motor Variability and Functional Connectivity of the Upper Limb Depending on Weight Distributions in a Handle of a Cordless Stick-Type Vacuum Cleaner

A Study on sEMG-Based Motor Variability and Functional Connectivity of the Upper Limb Depending on Weight Distributions in a Handle of a Cordless Stick-Type Vacuum Cleaner

An Investigation of Ergonomic Risk for Work-Related Musculoskeletal Disorders with Hand-Held Drilling

Does the introduction of a cobot change the productivity and posture of the operators in a collaborative task?

Contact Info

Product

Resources

About