Abstract
Abstract Ten professional milkers simulated 20 different standardized machine-milking work postures. The loading moment of force about the bilateral ankle axis was calculated using a computerized biomechanical sagittal plane model. Leg muscular activity was recorded with time-averaged, full-wave rectified electromyography which was normalized. The muscular activity level was generally low. The calculated loading moment was always dorsifiexing and did not exceed 50 N m. This is not above 50% of the maximum strength capacity and is lower than the load during many daily activities. Straight knee working postures induced lower ankle load compared with flexed knee postures. The model for determining ankle load can be used to investigate similar activities.
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