1. Grip force and heart rate responses to manual carrying tasks: effects of material, weight, and base area of the container
- Author
-
Chia-Yun Tseng and Tzu-Hsien Lee
- Subjects
Adult ,Male ,Lifting ,Hand Strength ,Chemistry ,Iron ,Physical Exertion ,Public Health, Environmental and Occupational Health ,Water ,Middle Aged ,Container (type theory) ,Weight-Bearing ,Animal science ,Volume (thermodynamics) ,Heart Rate ,Heart rate ,Humans ,Grip force ,Safety, Risk, Reliability and Quality ,Base (exponentiation) ,Safety Research ,Occupational Health - Abstract
This study recruited 16 industrial workers to examine the effects of material, weight, and base area of container on reduction of grip force (Δ GF) and heart rate for a 100-m manual carrying task. This study examined 2 carrying materials (iron and water), 4 carrying weights (4.4, 8.9, 13.3, 17.8 kg), and 2 base areas of container (24 × 24 cm, 35 × 24 cm). This study showed that carrying water significantly increased Δ GF and heart rate as compared with carrying iron. Also, Δ GF and heart rate significantly increased with carrying weight and base area of container. The effects of base area of container on Δ GF and heart rate were greater in carrying water condition than in carrying iron condition. The maximum dynamic effect of water on ΔGF and heart rate occurred when water occupied ~60%-80% of full volume of the container.
- Published
- 2014