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Effect of grip force on wirst range of motion.

Authors
DiMartino-A; Done-K; Judkins-T; Hallbeck-MS; Bashford-G
Source
Proceedings of the Human Factors and Ergonomics Society 48th Annual Meeting, September 20-24, 2004, New Orleans, Louisiana. Santa Monica, CA: Human Factors and Ergonomics Society, 2004 Oct; 48(12):1315-1318
NIOSHTIC No.
20040698
Abstract
This study investigated the effect of a constant grip exertion on wrist range-of-motion (ROM). Seven different levels of grip force were investigated, including two levels of zero exertion, 25%, 50%, 75%, 90%, and 100% MVC. Both hands were tested for each of three forearm positions (pronation, halfway between pronation and supination (neutral), and supination). Twenty student subjects (10 males and 10 females) were tested. Subjects held a particular grip force level constant while simultaneously moving their wrist. The maximum angles of flexion and extension were recorded to measure range-of-motion (ROM). ANOVA analysis was performed for the dependent variables of flexion angle, extension angle, and total ROM. Independent variables were gender, hand, forearm position, and exertion level. Exertion level was a significant factor for extension, flexion, and ROM. Forearm posture was a significant factor for extension and ROM. Tukey-Kramer analysis revealed similar groupings of exertion levels and forearm positions for flexion, extension, and ROM. The data show a significant decrement in wrist ROM as grip force exertion level increased.
Keywords
Muscular-disorders; Musculoskeletal-system; Work-areas; Work-operations; Ergonomics; Humans; Musculoskeletal-system-disorders; Injuries; Injury-prevention; Cumulative-trauma-disorders; Men; Women; Analytical-methods
CODEN
PHFSDQ
Publication Date
20041001
Document Type
Conference/Symposia Proceedings
Funding Type
Grant
Fiscal Year
2005
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-T42-OH-008491; Grant-Number-T42-CCT-717547
Issue of Publication
12
ISSN
1071-1813
Source Name
Proceedings of the Human Factors and Ergonomics Society 48th Annual Meeting, September 20-24, 2004, New Orleans, Louisiana
State
NE; IA
Performing Organization
University of Iowa
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