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Evaluation of supermarket bagging using a wrist motion monitor.

Authors
Estill-CF; Kroemer-KHE
Source
Hum Factors 1998 Dec; 40(4):624-632
NIOSHTIC No.
20024983
Abstract
The supermarket industry has one of the highest numbers of repeated trauma illnesses. Checkout departments have a rate of musculoskeletal injuries 2 to 3 times higher than that of other supermarket departments. The primary objective of this study was to quantify the wrist motions required to bag groceries using a wrist motion monitor. The wrist motions included deviations, velocities, and accelerations for flexion-extension, radial-ulnar, and pronation-supination directions. The independent variables were handle type and object location. Objects with finger-thumb couplings required more extreme pronations, greater wrist velocities for pronation-supination deviations, and greater wrist accelerations for pronation-supination deviations than did other objects. Objects with 10-cm hand couplings required more extreme flexion, larger ranges of movement for radial-ulnar deviations and pronation-supination deviations, and greater wrist velocities in the radial-ulnar and pronation-supination directions than did 5-cm objects. The right and front locations required more extreme deviations than did the left and back locations. Because finger-thumb and 10-cm hand couplings require larger wrist deviations and greater velocities, these objects may pose a greater risk of developing cumulative trauma disorders to the bagger. Potential applications of this research include engineering design of grocery packaging and supermarket bagging workstations.
Keywords
Monitoring-systems; Musculoskeletal-system-disorders; Injuries; Cumulative-trauma-disorders; Work-environment; Worker-health; Workplace-monitoring; Ergonomics; Grocery-stores; Retail-workers
Contact
Cheryl Fairfield Estill, NIOSH, 4676 Columbia Parkway, MS R-5, Cincinnati, OH 45226
CODEN
HUFAA6
Publication Date
19981201
Document Type
Journal Article
Fiscal Year
1999
NTIS Accession No.
NTIS Price
Issue of Publication
4
ISSN
0018-7208
NIOSH Division
DPSE
Source Name
Human Factors
State
OH; VA
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