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Objectively Measured Physical Activity Reduces the Risk of Mortality among Brazilian Older Adults

Bielemann, Renata M.; LaCroix, Andrea Z.; Bertoldi, Andréa D.; Tomasi, Elaine; Demarco, Flávio F.; Gonzalez, Maria Christina; da Silva, Pedro Augusto Crespo; Wendt, Andrea; da Silva, Inácio Crochemore Mohnsam; Brage, Soren; Ekelund, Ulf; Pratt, Michael
Peer reviewed, Journal article
Accepted version
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URI
https://hdl.handle.net/11250/2682933
Date
2019
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  • Artikler / Articles [2017]
  • Publikasjoner fra Cristin [1005]
Original version
Journal of The American Geriatrics Society. 2019, 68(1), 137-146.   10.1111/jgs.16180
Abstract
OBJECTIVES: Use of objectively measured physical activity(PA) in older adults to assess relationship between PA andrisk of all-causes mortality is scarce. This study evaluatedthe associations of PA based on accelerometry and a ques-tionnaire with the risk of mortality among older adultsfrom a city in Southern Brazil.

DESIGN: A cohort study.

SETTING: Urban area of Pelotas, Southern Brazil.

PARTICIPANTS: A representative sample of older adults(≥60 y) from Pelotas, enrolled in 2014.

MEASUREMENTS: Overall physical activity (mg), lightphysical activity (LPA), and moderate to vigorous physicalactivity (MVPA) were estimated by raw accelerometer data.The International Physical Activity Questionnaire estimated lei-sure time and commuting PA. Hazard ratios (excluding deathsin the first 6 mo) stratified by sex were estimated by Coxregression analysis considering adjustment for confounders.RESULTS: From the 1451 older adults interviewed in 2014,145 died (10%) after a follow-up of an average 2.6 years.Men and women in the highest tertile of overall PA had onaverage a 77% and 92% lower risk of mortality than theirless active counterparts (95% confidence interval [CI] =.06-.84 and 95% CI = .01-.65, respectively). The highest ter-tile of LPA was also related to a lower risk of mortality inindividuals of both sexes (74% and 91% lower risk amongmen and women, respectively). MVPA statistically reducedthe risk of mortality only among women (hazard ratio[HR] = .30 and HR = .07 in the second and third tertiles).Self-reported leisure-time PA was statistically associated witha lower risk of mortality only among men. Women in thehighest tertiles of commuting PA showed a lower risk of mor-tality than those in the reference group.

CONCLUSION: Accelerometry-based PA was associatedwith a lower risk of mortality among Brazilian older adults.Older individuals should practice any type of PA.
Description
I Brage finner du siste tekst-versjon av artikkelen, og den kan inneholde ubetydelige forskjeller fra forlagets pdf-versjon. Forlagets pdf-versjon finner du på onlinelibrary.wiley.com / In Brage you'll find the final text version of the article, and it may contain insignificant differences from the journal's pdf version. The definitive version is available at onlinelibrary.wiley.com
Journal
Journal of The American Geriatrics Society

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