Effects of box weight, vertical location and symmetry on lifting capacities and ratings on category scale in Japanese female workers

Article Abstract:

Japanese female workers were studied for the effects of box weight, vertical location and symmetry on lifting capacities and ratings.

Safety and security measures, Ergonomics

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Effects of asymmetric dynamic and isometric liftings on strength/force and rating of perceived exertion

Article Abstract:

The isometric lift and dynamic lift measurements reveals similarities and differences with respect to lifting strength and forces. The angle factor influences the isometric strength and dynamic forces, while postural factor influences the height at peak force. Isometric strength is the highest in lifting in the right 45 degree plane and the lowest in 90 degree left and right planes. Dynamic forces are highest in the sagittal plane lifting and the lowest in 90 degree left and right planes. Height at peak force is greater in squat posture as compared to stoop posture.

Muscle strength

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Test-retest reliability of isometric and isoinertial testing in symmetric and asymmetric lifting

Article Abstract:

A study was conducted to assess the test-retest reliability of the isoinertial dynamometer in measuring lifting capacity or force parameters, such as peak force, height at peak force and average upward acceleration, under a number of ergonomic factor combinations. Results show that the dynamometer provided reliable measurements of peak force, isometric lifting and isometric strength in the sagittal plane. However, isometric strength and lifting measures at right angles to the lateral plane seemed unreliable.

Evaluation, Measurement, Dynamometer, Dynamometers

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