Moderate‐to‐Vigorous Physical Activity and All‐Cause Mortality: Do Bouts Matter?

Background The 2008 Physical Activity Guidelines for Americans recommends that adults accumulate moderate‐to‐vigorous physical activity (MVPA) in bouts of ≥10 minutes for substantial health benefits. To what extent the same amount of MVPA accumulated in bouts versus sporadically reduces mortality ri...

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Vydáno v:Journal of the American Heart Association Ročník 7; číslo 6
Hlavní autoři: Saint‐Maurice, Pedro F., Troiano, Richard P., Matthews, Charles E., Kraus, William E.
Médium: Journal Article
Jazyk:angličtina
Vydáno: England John Wiley and Sons Inc 20.03.2018
Wiley
Témata:
accelerometer
activity bouts
adults
Cause of Death
epidemiology
Exercise
Female
Healthy Lifestyle
Humans
Male
National Health and Nutrition Examination Survey
Nutrition Surveys
Original Research
Physical Exertion
Prospective Studies
Protective Factors
Risk Assessment
Risk Factors
Risk Reduction Behavior
Time Factors
United States
United States
epidemiology
exercise
National Health and Nutrition Examination Survey
activity bouts
accelerometer
adults
ISSN:2047-9980, 2047-9980
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Shrnutí:Background The 2008 Physical Activity Guidelines for Americans recommends that adults accumulate moderate‐to‐vigorous physical activity (MVPA) in bouts of ≥10 minutes for substantial health benefits. To what extent the same amount of MVPA accumulated in bouts versus sporadically reduces mortality risk remains unclear. Methods and Results We analyzed data from the National Health and Nutrition Examination Survey 2003–2006 and death records available through 2011 (follow‐up period of ≈6.6 years; 700 deaths) to examine the associations between objectively measured physical activity accumulated with and without a bout criteria and all‐cause mortality in a representative sample of US adults 40 years and older (n=4840). Physical activity data were processed to generate minutes per day of total and bouted MVPA. Bouted MVPA was defined as MVPA accumulated in bouts of a minimum duration of either 5 or 10 minutes allowing for 1‐ to 2‐minute interruptions. Hazard ratios for all‐cause mortality associated with total and bouted MVPA were similar and ranged from 0.24 for the third quartile of total to 0.44 for the second quartile of 10‐minute bouts. The examination of jointly classified quartiles of total MVPA and tertiles of proportion of bouted activity revealed that greater amounts of bouted MVPA did not result in additional risk reductions for mortality. Conclusions These results provide evidence that mortality risk reductions associated with MVPA are independent of how activity is accumulated and can impact the development of physical activity guidelines and inform clinical practice.
Bibliografie:ObjectType-Article-2
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ISSN:2047-9980
2047-9980
DOI:10.1161/JAHA.117.007678