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Dynamic postures of the transverse metacarpal arch during typing.

Authors
Baker-NA; Xiu-K; Moehling-K; Li-ZM
Source
J Appl Biomech 2013 Dec; 29(6):810-816
NIOSHTIC No.
20045113
Abstract
The purpose of this paper is to describe the transverse metacarpal arch (TMA) during a dynamic typing task. Static/relaxed and dynamic typing TMA were collected from 36 right-handed females with musculoskeletal discomfort using a motion capture system. While the angle of right TMA static/relaxed posture (10.1 degrees +/- 5.5 degrees) was significantly larger than the left (8.5 degrees +/- 5.6 degrees) (P < .05), the right dynamic posture (10.6 degrees +/- 4.3 degrees) was not significantly different from the left (10.3 degrees +/- 5.5 degrees) (P = .66). Within both these mean scores, there was considerable individual variation, with some subjects demonstrating very flat TMA, and some very curved. The results indicate that TMA angular postures both for static/relaxed and dynamic typing are highly variable both between individuals and between individual hands.
Keywords
Humans; Adolescents; Women; Extremities; Hand-injuries; Musculoskeletal-system; Musculoskeletal-system-disorders; Posture; Age-groups; Physiology; Physiological-factors; Physiological-function; Physiological-measurements; Physiopathology; Author Keywords: kinematics; occupational therapy; hand; transverse metacarpal arch
Contact
Nancy A. Baker, Department of Occupational Therapy, 5012 Forbes Tower, University of Pittsburgh, Pittsburgh, PA, 15260
CODEN
JABOEG
Publication Date
20131201
Document Type
Journal Article
Email Address
nab36@pitt.edu
Funding Type
Grant
Fiscal Year
2014
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R01-OH-008961
Issue of Publication
6
ISSN
1065-8483
Source Name
Journal of Applied Biomechanics
State
PA; MA
Performing Organization
University of Pittsburgh at Pittsburgh
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