Energy Expenditure

EE: Diurnal Variation (2014)

• Assessment
  What is the effect of diurnal (time of day) variation on resting metabolic rate (RMR) in healthy and non-critically ill individuals?

  • Conclusion

    Based on the limited evidence reviewed, diurnal variation has minimal effect on resting metabolic rate (RMR) in healthy adults. Additional research on larger, more heterogeneous samples is needed.

  • Grade: III
    • Grade I means there is Good/Strong evidence supporting the statement;
    • Grade II is Fair;
    • Grade III is Limited/Weak;
    • Grade IV is Expert Opinion Only;
    • Grade V is Not Assignable.
    • High (A) means we are very confident that the true effect lies close to that of the estimate of the effect;
    • Moderate (B) means we are moderately confident in the effect estimate;
    • Low (C) means our confidence in the effect estimate is limited;
    • Very Low (D) means we have very little confidence in the effect estimate.
    • Ungraded means a grade is not assignable.
  • Evidence Summary: What is the effect of diurnal (time of day) variation on resting metabolic rate (RMR) in healthy and non-critically ill individuals?
    • Detail
    • Quality Rating Summary
      For a summary of the Quality Rating results, click here.
    • Worksheets
      • Leff ML, Hill JO, Yates AA, Cotsonis GA, Heymsfield SB. Resting metabolic rate: Measurement reliability. Journal of Parenteral and Enteral Nutrition 1987; 11: 354-359.
      • Weststrate JA, Weys PJM, Poortvliet EJ, Deurenberg P, Hautvast JGAJ. Diurnal variation in postabsoprtive resting metabolic rate and diet-induced thermogenesis. Am J Clin Nutr. 1989; 58(5): 592-601.
  • Search Plan and Results: EE: Diurnal Variation in Healthy and Non-Critically Ill Individuals 2012