Definition, measurement, and health risks associated with sedentary behavior.
Level 5 - mechanism / opinion, no new human data
Expert workshop report and narrative review with no original empirical human data
PubMed 25222816 · doi:10.1249/MSS.0000000000000517
What was done
This paper summarizes findings from the "Research Evidence on Sedentary Behavior" session of a workshop sponsored by the National Heart, Lung, and Blood Institute (NHLBI) and the National Institute on Aging (NIA). The authors synthesized current evidence regarding the definition, measurement methodologies, and health risks of sedentary behavior (SB) in adults to establish priorities for future research.
What was found
No empirical numbers or quantitative data are reported in the abstract. The workshop highlighted that a consensus definition of sedentary behavior is lacking, generally split between energy expenditure alone (<1.5 METs) versus combining low intensity (≤1.5 METs) with a seated or reclining posture. Prospective evidence linking sedentary behavior to cardiometabolic and aging outcomes relies almost entirely on self-report. Major priorities identified include determining whether to include a postural component in definitions, developing and standardizing objective devices (such as accelerometry assessing posture), and conducting longitudinal studies with repeated, objective measures in diverse populations.
Why it matters
It outlines critical research priorities to resolve methodological inconsistencies in sedentary behavior research, particularly urging a shift from self-report to standardized, objective postural measurements.
Limits
This is a narrative workshop report and expert perspective containing no original empirical data or systematic review methodology. It relies on qualitative consensus rather than quantitative synthesis.
Cited by
- context Sedentary behavior is defined as an energy expenditure falling below 1.5 metabolic equivalents (METs).