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Heterogeneity in the Energy Cost of Posture Maintenance during Standing Relative to Sitting: Phenotyping According to Magnitude and Time-Course

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  • Jennifer L Miles-Chan
  • Delphine Sarafian
  • Jean-Pierre Montani
  • Yves Schutz
  • Abdul Dulloo

Abstract

Background: Reducing sitting-time may decrease risk of disease and increase life-span. In the search for approaches to reduce sitting-time, research often compares sitting to standing and ambulation, but the energetic cost of standing alone versus sitting is equivocal, with large variation in reported mean values (0% to >20% increase in energy expenditure (EE) during standing). Objective: To determine the magnitude and time-course of changes in EE and respiratory quotient (RQ) during steady-state standing versus sitting. Design: Min-by-min monitoring using a posture-adapted ventilated-hood indirect calorimetry system was conducted in 22 young adults with normal BMI during 10 min of steady-state standing versus sitting comfortably. Results: This study reveals three distinct phenotypes based on the magnitude and time-course of the EE response to steady-state standing. One-third of participants (8/22) showed little or no change in EE during standing relative to sitting (ΔEE

Suggested Citation

  • Jennifer L Miles-Chan & Delphine Sarafian & Jean-Pierre Montani & Yves Schutz & Abdul Dulloo, 2013. "Heterogeneity in the Energy Cost of Posture Maintenance during Standing Relative to Sitting: Phenotyping According to Magnitude and Time-Course," PLOS ONE, Public Library of Science, vol. 8(5), pages 1-6, May.
    • Handle: RePEc:plo:pone00:0065827
    DOI: 10.1371/journal.pone.0065827
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