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The importance of vigorous-intensity, leisure-time physical activity in reducing cardiovascular disease mortality risk in the obese

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posted on 12.01.2018 by Gary O'Donovan, Emmanuel Stamatakis, David Stensel, Mark Hamer
Objective: To investigate the role of vigorous-intensity leisure-time physical activity in reducing cardiovascular disease (CVD) mortality risk in the obese. Methods: Trained interviewers assessed physical activity and body mass index (BMI) in 59,005 adult participants (57±12 years of age [mean±SD]; 46.5% male) in the household based surveillance studies, Health Survey for England and Scottish Health Survey. Mortality was ascertained from death certificates. Data were collected from January 1994 to March 2011. Cox proportional hazards models were adjusted for age, sex, smoking habit, total physical activity, longstanding illness, prevalent CVD, and occupation. Results: There were 2,302 CVD deaths during 532,251 person-years of follow-up (9±4 years). Some 25% of participants were categorized as obese (BMI ≥30 kg·m-236 ). Leisure-time physical activity was inversely associated and BMI was positively associated with CVD mortality. Compared to those who reported meeting physical activity guidelines, including some vigorous-intensity physical activity, and who had a normal BMI (18.5-24.9 kg·m-239 ) (reference group), CVD mortality hazard ratio was not significantly different in the obese who also reported meeting physical activity guidelines, including some vigorous-intensity physical activities (1.25; 95% confidence interval: 0.50, 3.12). Compared to the reference group, CVD mortality hazard ratio was more than twofold in the obese who reported meeting physical activity guidelines, including only moderate-intensity physical activities (2.52; 95% CI: 1.15, 2.53). Conclusion: This large, statistically powerful study suggests that vigorous-intensity leisure time physical activity is important in reducing CVD mortality risk in the obese.

Funding

O’Donovan, Stensel and Hamer were supported by the National Institute for Health Research Leicester Biomedical Research Centre, which is a partnership between University Hospitals of Leicester NHS Trust, Loughborough University, and University of Leicester.

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  • Sport, Exercise and Health Sciences

Published in

Mayo Clinic Proceedings

Citation

O'DONOVAN, G. ...et al., 2018. The importance of vigorous-intensity, leisure-time physical activity in reducing cardiovascular disease mortality risk in the obese. Mayo Clinic Proceedings, 93 (8), pp.1096-1103.

Publisher

Elsevier © Mayo Foundation for Medical Education and Research

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

08/01/2018

Publication date

2018

Notes

This paper was published in the journal Mayo Clinic Proceedings and the definitive published version is available at https://doi.org/10.1016/j.mayocp.2018.01.016.

ISSN

1942-5546

Language

en

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