The influence of task frequency and force direction on psychophysically acceptable forces in the context of the biomechanically weakest links
Deutscher übersetzter Titel: | Der Einfluss von Anforderungsfrequenz und Kraftrichtung auf psychophysisch annehmbare Kräfte im Kontext von biomechanischen Schwachpunkten |
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Autor: | Cudlip, Alan C.; Fischer, Steven L.; Wells, Richard; Dickerson, Clark R. |
Erschienen in: | Journal of applied biomechanics |
Veröffentlicht: | 29 (2013), 3, S. 285-291, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource Elektronische Ressource (Datenträger) |
Sprache: | Englisch |
ISSN: | 1065-8483, 1543-2688 |
DOI: | 10.1123/jab.29.3.285 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201401000242 |
Quelle: | BISp |
Abstract
This study examined the influence of frequency and direction of force application on psychophysically acceptable forces for simulated work tasks. Fifteen male participants exerted psychophysically acceptable forces on a force transducer at 1, 3, or 5 repetitions per minute by performing both a downward press and a pull toward the body. These exertions were shown previously to be strength and balance limited, respectively. Workers chose acceptable forces at a lower percentage of their maximum voluntary force capacity during downward (strength-limited) exertions than during pulling (balance-limited) exertions at all frequencies (4% to 11%, P = .035). Frequency modulated acceptable hand force only during downward exertions, where forces at five repetitions per minute were 13% less (P = .005) than those at one exertion per minute. This study provides insight into the relationship between biomechanically limiting factors and the selection of acceptable forces for unilateral manual tasks. Verf.-Referat