Safety and Health at Work Vol. 13 Supplement 1 2022
A comparison of muscle activity and force applied between pointing devices in sitting and standing posture
Dublin Core
Title
Safety and Health at Work Vol. 13 Supplement 1 2022
A comparison of muscle activity and force applied between pointing devices in sitting and standing posture
A comparison of muscle activity and force applied between pointing devices in sitting and standing posture
Subject
Comparison of muscle activity and force applied, sitting,standing psoture
Description
Introduction: Intensive use of the pointing device may lead to work-
related musculoskeletal disorder. Subsequently, changing between
sitting and standing working posture may influence the force exertion
during usage of pointing device. This study aims to investigate the muscle activity and force applied characteristics between two types
of pointing devices (common mouse and trackball) at both sitting and standing posture.
Material and Methods: Ten right-handed university students (25.5±2.6 years) were recruited. Participants used a common mouse and a trackball to perform Task 1: mouse pointing and click and Task 2: mouse click-drag-release in both sitting and standing posture. Muscle activity of the middle deltoid and upper trapezius was assessed by surface EMG. The force applied on pointing during tasks were measured by a customized force plate with three miniature loadcells (MCSR-5L-FG). Surface EMG and loadcell signal were recorded and synchronized using LabChart v7.1.1.
Results: Significant main effects of pointing devices (p<0.05) was found in both Task 1 and Task 2 on the force application. Task 1 (standing posture), the average applied forces on common mouse and trackball were 1.1±0.7N and 0.7±0.4N, respectively. Task 2 (standing posture), the average applied forces on common mouse and trackball were 1.8±1.0N and 2.4±0.5N, respectively. No significant main effects of pointing device and posture were found on muscles activity of both middle deltoid and upper trapezius in both tasks.
Conclusions: Our results indicate posture and pointing device could
influence the force exertion during clicking and dragging operation.
related musculoskeletal disorder. Subsequently, changing between
sitting and standing working posture may influence the force exertion
during usage of pointing device. This study aims to investigate the muscle activity and force applied characteristics between two types
of pointing devices (common mouse and trackball) at both sitting and standing posture.
Material and Methods: Ten right-handed university students (25.5±2.6 years) were recruited. Participants used a common mouse and a trackball to perform Task 1: mouse pointing and click and Task 2: mouse click-drag-release in both sitting and standing posture. Muscle activity of the middle deltoid and upper trapezius was assessed by surface EMG. The force applied on pointing during tasks were measured by a customized force plate with three miniature loadcells (MCSR-5L-FG). Surface EMG and loadcell signal were recorded and synchronized using LabChart v7.1.1.
Results: Significant main effects of pointing devices (p<0.05) was found in both Task 1 and Task 2 on the force application. Task 1 (standing posture), the average applied forces on common mouse and trackball were 1.1±0.7N and 0.7±0.4N, respectively. Task 2 (standing posture), the average applied forces on common mouse and trackball were 1.8±1.0N and 2.4±0.5N, respectively. No significant main effects of pointing device and posture were found on muscles activity of both middle deltoid and upper trapezius in both tasks.
Conclusions: Our results indicate posture and pointing device could
influence the force exertion during clicking and dragging operation.
Creator
Yu Lin, Ping Yeap Loh
Publisher
Elsevier Korea LLC
Date
January 2022
Contributor
Sri Wahyuni
Format
PDF
Language
English
Type
Text
Coverage
Safety and Health at Work Vol. 13 Supplement 1 2022
Files
Citation
Yu Lin, Ping Yeap Loh, “Safety and Health at Work Vol. 13 Supplement 1 2022
A comparison of muscle activity and force applied between pointing devices in sitting and standing posture,” Repository Horizon University Indonesia, accessed May 9, 2025, https://repository.horizon.ac.id/items/show/2333.
A comparison of muscle activity and force applied between pointing devices in sitting and standing posture,” Repository Horizon University Indonesia, accessed May 9, 2025, https://repository.horizon.ac.id/items/show/2333.