The effect of music at two levels (60-65 dB and 80-85 dB), vs. no music (silent), on the performance of 40 subjects engaged in a data processing task was studied.It was found that, while the music did not disturb the overall accuracy of the task output, it increased the subjects' speed in data processing and overall productivity.The subjects showed a favorable attitude toward music being introduced at workstations.

The objective of this study was to explore the effects of elbow flexion on the hand-grip strength. The data were collected by trained, senior and graduate students as a required mini-project in an ergonomics course. A sample of 125 female and 222 male adults, ages 18 to 47 (22.5±3.35), body heights of 173.0±10.47cm and body weights of 73.6±16.48 kg, mostly from college student population, were tested using standardized data collection form, positioning and instructions. In this study, the grip strengths of 347 subjects were measured and recorded over a multiple number of years. Pair-wise comparisons using the Student's T-Test showed that the hand-grip strength at the elbow in the fully extended position was significantly higher than when the elbow flexed. The test also showed significantly higher grip strength in 90° flexed position than in 30°, 60° or 120° flexion. No significant differences were found in the grip strength among the 30°, 60° or 120° elbow flexed positions. Comparison of the average hand-grip strength of dominant-hand and non-dominant hand of the subjects showed a significant difference. The female subjects found to have about 41% lower grip strength than the male counterparts.

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