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Associations of low- and high-intensity light activity with cardiometabolic biomarkers

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dc.contributor.authorHoward, B.
dc.contributor.authorWinkler, E.A.H.
dc.contributor.authorSethi, P.
dc.contributor.authorCarson, V.
dc.contributor.authorRidgers, N.D.
dc.contributor.authorSalmon, J.
dc.contributor.authorHealy, G.N.
dc.contributor.authorOwen, N.
dc.contributor.authorDunstan, D.W.
dc.date.issued2015
dc.description.abstractPurpose Light-intensity physical activity (LIPA) accounts for much of adults' waking hours (approximate to 40%) and substantially contributes to overall daily energy expenditure. Encompassing activity behaviors of low intensity (standing with little movement) to those of higher intensity (slow walking), LIPA is ubiquitous, yet little is known about how associations with health may vary depending on its intensity. We examined the associations of objectively assessed LIPA (categorized as either low LIPA [LLPA] or high LIPA [HLPA]) and moderate- to vigorous-intensity activity with cardiometabolic risk biomarkers.Methods Cardiometabolic biomarkers were measured in 4614 US adults (47 17 yr) who participated in the 2003-2004 and 2005-2006 National Health and Nutrition Examination Survey cycles. Multiple linear regression analyses examined the associations of three accelerometer-derived physical activity (SD increment per day) intensity categories (LLPA, 100-761 counts per minute; HLPA, 762-1951 counts per minute; moderate-intensity physical activity [MPA], 1952-5724 counts per minute; vigorous-intensity physical activity [VPA], 5725 counts per minute) with cardiometabolic biomarkers, adjusting for potential sociodemographic, behavioral, and medical confounders.Results All intensities of physical activity were beneficially associated with waist circumference, C-reactive protein, triglycerides, fasting insulin, -cell function, and insulin sensitivity (P < 0.05); only some activity intensities showed significant associations with systolic blood pressure (LLPA), body mass index, HDL cholesterol, fasting glucose, and 2-h plasma glucose (HLPA, MPA, and VPA). Generally, effect size increased with intensity of physical activity. Overall, further adjustment for waist circumference attenuated associations with MPA and VPA to a greater extent than associations with LLPA and HLPA.Conclusions The cross-sectional findings provide novel evidence for the potential benefits of increasing both LLPA and HLPA. They further reinforce the established importance of moderate- to vigorous-intensity activity, the mainstay of public health recommendations.
dc.identifier.citationMedicine & Science in Sports & Exercise, 2015; 47(10):2093-2101
dc.identifier.doi10.1249/mss.0000000000000631
dc.identifier.issn0195-9131
dc.identifier.issn1530-0315
dc.identifier.orcidRidgers, N.D. [0000-0001-5713-3515]
dc.identifier.urihttps://hdl.handle.net/11541.2/28379
dc.language.isoen
dc.publisherLippincott Williams & Wilkins
dc.relation.fundingNHMRC 566940
dc.relation.fundingNHMRC 1056320
dc.relation.fundingARC FT100100918
dc.relation.fundingNHMRC 1026216
dc.relation.fundingHeart Foundation PH 12B 7054
dc.rightsCopyright 2015 by the American College of Sports Medicine
dc.source.urihttps://doi.org/10.1249/MSS.0000000000000631
dc.subjectaccelerometer
dc.subjectincidental activity
dc.subjectmovement
dc.titleAssociations of low- and high-intensity light activity with cardiometabolic biomarkers
dc.typeJournal article
pubs.publication-statusPublished
ror.mmsid9916606237601831

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