Ergonomics and Workplace Design

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Ergonomics and Workplace Design

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Ch. 5: Work Physiology
1. Explain “oxygen debt” and “oxygen payback” in the oxygen uptake profile of
human body.
-Oxygen debt and oxygen payback refer to the adjustment and recovery periods,
respectively, in the uptake profile of the human body. At the start of work or exercise,
oxygen consumption will increase gradually to supply the muscles the necessary oxygen
for that workload. At the end of work or exercise, the oxygen consumption does not
immediately return to the resting values but decreases exponentially.
2. Describe the importance of using empirical formula for estimating maximum heart
rate. Why do we not assess the actual value instead of estimating it?
-Ergonomists utilize regression methods and rely upon a strong linear relationship
between heart rate and oxygen consumpti...


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