Decrease of force capabilities as an index of upper limb fatigue

Article Abstract:

The study is conducted to access upper limb fatigue on the basis of the force change index (FCI), which expresses changes in development force, and to demonstrate that this index differentiates muscle fatigue of the upper limb depending on external load. It is found that FCI can be applied for fatigue assessment and discrimination with a more sophisticated model of a repetitive task than just a simple two-period and rest model.

Health aspects, Fatigue, Extremities (Anatomy)

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Optimal work - rest cycles for an isometric intermittent gripping task as a function of force, posture and grip span

Article Abstract:

A study investigated the maximum acceptable contraction frequencies, work-rest cycles for an isometric intermittent handgrip task as a function of force, posture, and grip span. The grip span of a tool is an important factor to be considered in predicting optimal work, rest cycles for hand grip tasks, while the optimum setting of grip span of the hand tool depends on the required task force level.

Task analysis, Psychophysiology

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Variability of grip strength during isometric contraction

Article Abstract:

A study conducted to determine the variability of grip strength amongst men and women is discussed. The study measured grip strength when participants were told to give either 100% or 50% effort. Females showed greater variability in trip strength when asked to give various amounts of effort. Variations in strength at different exertion levels were compared, ad are discussed in detail.

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