| Autor: |
DRURY, C. G., BEGBIE, K., ULATE, C., DEEB, J. M. |
| Zdroj: |
Ergonomics; Mar1985, Vol. 28 Issue 3, p577-589, 13p |
| Abstrakt: |
One potential hazard in manual materials-handling (MMH) jobs is the wrist deviation required when a container is moved. Container handles may help control this deviation, but if container handles are to be designed to fit the operator, an evaluation of the effect of wrist deviation on MMH tasks is required. After a pilot experiment, a one-handed holding task was used to impose five wrist deviations on the subject, ranging in equal steps from 20° ulnar to 20° radial. Two weights of container (9 and 13 kg) were tested. Measurements of heart rate, psychophysical variables and angles of the hand and arm were taken on 15 male and 15 female subjects. No significant gender effects were found but changes in imposed deviation were equivalent to a 16% change in box weight. Radial deviation proved worse than ulnar deviation. The hand and arm accommodated to the imposed deviation by deviating the wrist but mainly by allowing the box handle to slip within the hand. [ABSTRACT FROM PUBLISHER] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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