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Table 1 Investigation of energy requirements of the job

From: A case of fitness to work in a worker with COPD using the exercise stress test

  VO2work(ml/kg/min)* Work time (min) VO2work × time (ml/kg)
Sedentary work 5.3 300 1,590
Car driving 7.0 30 210
Walking slowly 7.0 60 420
Walking normally 12.3 20 246
Standing and speaking 10.5 30 315
Ascending stairs 14.0 20 280
Descending stairs 12.3 20 246
Total   480 3307
  1. Mean aerobic demand for these activities = 6.89 ml/kg/min (3,307/480). VO2work, aerobic demand of the job
  2. *VO2work values taken from Ainsworth et al. [9]