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Letters to the editor
Sleeping metabolic rate in infants
  1. JONATHAN C K WELLS
  1. Dunn Nutrition Unit
  2. Downham’s Lane, Milton Road
  3. Cambridge CB4 1XJ
  4. Queensland University of Technology
  5. School of Human Movement Studies
  6. Kelvin Grove Campus, Victoria Park Road
  7. Locked Bag No 2, Red Hill
  8. Queensland 4059, Australia
    1. PETER S W DAVIES
    1. Dunn Nutrition Unit
    2. Downham’s Lane, Milton Road
    3. Cambridge CB4 1XJ
    4. Queensland University of Technology
    5. School of Human Movement Studies
    6. Kelvin Grove Campus, Victoria Park Road
    7. Locked Bag No 2, Red Hill
    8. Queensland 4059, Australia

      https://doi.org/10.1136/adc.76.5.e477

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        Editor,—The recent articles on sleeping metabolic rate (SMR) in infants are commendable in addressing the relationship between heat balance and the thermal environment.1 2There is increasing awareness that this relationship may be relevant to sudden infant death syndrome.3

        However, although agreeing with the authors that SMR can vary considerably between individuals due to genetic and thermal environmental factors, we suspect that the variation reported in the studies would prove less extreme if variation in body size and sleep state were taken into account.

        In the first study,1 SMR per kg body weight was assumed to be an index of SMR adjusted for body …

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