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Self-Reported Sitting Time, Physical Activity and Fibrinolytic and Other Novel Cardio-Metabolic Biomarkers in Active Swedish Seniors
Baker IDI Heart and Diabetes Institute, Melbourne, Australia; School of Public Health & Preventive Medicine, Monash University, Melbourne, Australia.
Örebro University, School of Health Sciences.ORCID iD: 0000-0003-1067-8627
Department of Laboratory Medicine Faculty of Medicine and Health, Örebro University, Örebro, Sweden.
Department of Medical Biosciences/Clinical Chemistry, Umeå University, Umeå, Sweden.
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2016 (English)In: PLoS ONE, ISSN 1932-6203, E-ISSN 1932-6203, Vol. 11, no 9, e0163409Article in journal (Refereed) Published
Abstract [en]

Background: Too much sitting is linked with an increased risk of cardiovascular disease and mortality. The mediating mechanisms for these associations are largely unknown, however dysregulated fibrinolysis have emerged as a possible contributor.

Objective: We examined the associations of self-reported overall sitting time and physical activity with fibrinolytic and other novel cardio-metabolic biomarkers in older adults.

Materials and Methods: Data was analysed for 364 participants (74±7 yrs) of the Active Seniors group (retired, living independently in their own homes). Linear regression analyses examined associations of categories of categories of sitting time (≤3, 3-6, >6 hrs/day) and overall physical activity (Low, Moderate and High) with biomarkers in serum or plasma, adjusting for age, gender and smoking (with further adjustment for either overall physical activity or sitting time and BMI in secondary analyses).

Results: Compared to sitting ≤ 3 hrs/day, sitting >6 hrs/day was associated with higher tissue plasminogen activator (tPA) and tissue plasminogen activator/plasminogen activator inhibitor-1 complex (tPA-PAI-1 complex). These associations were not independent of overall physical activity or BMI. Compared to those in the high physical activity, low physical activity was associated with a higher BMI, high-sensitivity C-reactive protein (hs-CRP) and tPA-PAI-1 complex levels. Only the associations of BMI and hs-CRP were independent of sitting time.

Conclusions: These findings provide preliminary cross-sectional evidence for the relationships of sitting time with fibrinolytic markers in older adults. They also reinforce the importance of regular physical activity for cardio-metabolic health.

Place, publisher, year, edition, pages
San Francisco, USA: Public Library od Scence , 2016. Vol. 11, no 9, e0163409
National Category
Environmental Health and Occupational Health Geriatrics
Identifiers
URN: urn:nbn:se:oru:diva-52518DOI: 10.1371/journal.pone.0163409ISI: 000383893200111PubMedID: 27658041OAI: oai:DiVA.org:oru-52518DiVA: diva2:974336
Available from: 2016-09-26 Created: 2016-09-26 Last updated: 2017-10-17Bibliographically approved

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