Abstract
The goal of this study was to compare energy expenditure between adjusted and unadjusted industrial apparel equipment for northern Mexican male anthropometry. The hypothesis was that by working in the neutral range of motion, workers would expend less energy, which may possibly increase productivity and yield, and offer a better sense of security and comfort to workers in their jobs. Based on the straight linear relationship between heart rate and energy expenditure, experimental results indicated that there was a statistically significant difference in heart rate between working with adjusted equipment (working in the neutral range of motion) and unadjusted equipment. The posture/position significantly affected the mean heart rate regardless of the subject and/or day of the week.
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