Normal caffeine consumption: influence on thermogenesis and daily energy expenditure in lean and postobese human volunteers.

  title={Normal caffeine consumption: influence on thermogenesis and daily energy expenditure in lean and postobese human volunteers.},
  author={Abdul G. Dulloo and Catherine A. Geissler and Tracy J. Horton and Andrew Collins and D. S. Miller},
  journal={The American journal of clinical nutrition},
  volume={49 1},
Single-dose oral administration of 100 mg caffeine increased the resting metabolic rate of both lean and postobese human volunteers by 3-4% (p less than 0.02) over 150 min and improved the defective diet-induced thermogenesis observed in the postobese subjects. Measurements of energy expenditure (EE) in a room respirometer indicate that repeated caffeine administration (100 mg) at 2-h intervals over a 12-h day period increased the EE of both subject groups by 8-11% (p less than 0.01) during… 
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