Dataset Information

Changes in daily activity patterns with age in U.S. men and women: National Health and Nutrition Examination Survey 2003-04 and 2005-06.

ABSTRACT: OBJECTIVES:To compare daily and hourly activity patterns according to sex and age. DESIGN:Cross-sectional, observational. SETTING:Nationally representative community sample: National Health and Nutrition Examination Survey (NHANES) 2003-04 and 2005-06. PARTICIPANTS:Individuals (n = 5,788) aged 20 and older with 4 or more valid days of monitor wear-time, no missing data on valid wear-time minutes, and covariates. MEASUREMENTS:Activity was examined as average counts per minute (CPM) during wear-time; percentage of time spent in nonsedentary activity; and time (minutes) spent in sedentary (<100 counts), light (100-759), and moderate to vigorous physical activity (MVPA (? 760)). Analyses accounted for survey design, adjusted for covariates, and were sex specific. RESULTS:In adjusted models, men spent slightly more time (~1-2%) in nonsedentary activity than women aged 20 to 34, with levels converging at age 35 to 59, although the difference was not significant. Women aged 60 and older spent significantly more time (~3-4%) in nonsedentary activity than men, despite similarly achieved average CPM. With increasing age, all nonsedentary activity decreased in men; light activity remained constant in women (~30%). Older men had fewer CPM at night (~20), more daytime sedentary minutes (~3), fewer daytime light physical activity minutes (~4), and more MVPA minutes (~1) until early evening than older women. CONCLUSION:Although sex differences in average CPM declined with age, differences in nonsedentary activity time emerged as men increased sedentary behavior and reduced MVPA time. Maintained levels of light-intensity activity suggest that women continue engaging in common daily activities into older age more than men. Findings may help inform the development of behavioral interventions to increase intensity and overall activity levels, particularly in older adults.

SUBMITTER: Martin KR

PROVIDER: S-EPMC4115191 | biostudies-literature | 2014 Jul

REPOSITORIES: biostudies-literature

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Changes in daily activity patterns with age in U.S. men and women: National Health and Nutrition Examination Survey 2003-04 and 2005-06.

Martin Kathryn R KR Koster Annemarie A Murphy Rachel A RA Van Domelen Dane R DR Hung Ming-yang MY Brychta Robert J RJ Chen Kong Y KY Harris Tamara B TB

Journal of the American Geriatrics Society 20140624 7

<h4>Objectives</h4>To compare daily and hourly activity patterns according to sex and age.<h4>Design</h4>Cross-sectional, observational.<h4>Setting</h4>Nationally representative community sample: National Health and Nutrition Examination Survey (NHANES) 2003-04 and 2005-06.<h4>Participants</h4>Individuals (n = 5,788) aged 20 and older with 4 or more valid days of monitor wear-time, no missing data on valid wear-time minutes, and covariates.<h4>Measurements</h4>Activity was examined as average co ...[more]

PMID: 24962323

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Project description:Eleven polybrominated diphenyl ether (tri- to deca-BDE) congeners and 2,2',4,4',5,5'-hexabromobiphenyl (BB153) have been measured in pooled serum samples from the National Health and Nutrition Examination Survey (NHANES) for one decade (from survey years 2005/06 through 2013/14). The pools, which are representative of the general noninstitutionalized population of the United States, encompassed thirty-two demographic groups defined by sex, race/ethnicity (Mexican American, non-Hispanic black, non-Hispanic white, and all other race/ethnicities), and age (12-19, >20-39, >40-59, and ?60 years). The adjusted geometric means were determined in a multiple linear regression model for the six congeners (BDE28, BDE47, BDE99, BDE100, BDE153, and BB153) with detectable concentrations in at least 60% of pools in each of the thirty-two demographic groups; the level of significance for all statistical comparisons thereof were determined. BDE154 and BDE209 were detected in 60% of the NHANES 2011/12 and 2013/14 pools; only these two survey periods were evaluated for these congeners. The percent change in concentration by a 2-year survey period was calculated. All examined PBDEs reported in five survey periods decreased in concentration, except BDE153, for which concentrations increased by 12.0% (95% CI 7.1-16.4) and 8.4% (95% CI 2.9-14.1) for the age groups 40-59 and ?60 years, respectively; no significant change was observed in younger age groups. Excluding BDE153, we observed larger percentage decreases by a 2-year survey period for the age groups 12-19, 20-39, and ?60 years compared with the age group 40-59 years. The percentage decrease by a two-year survey period ranged between -19.6% (BDE99, 20-39 years old) and -4.5% (BDE100, 40-59 years old). Although five polybrominated diphenyl ether (PDBE) congeners and BB153 are still frequently detected in the U.S. general population, PBDE concentrations have decreased since 2005-2006, likely, because of changes in manufacturing practices that started in the mid-2000s.

Project description:BACKGROUND:Nearly 40 million American adults report past year food insecurity. This is concerning, as food insecurity is associated with chronic disease morbidity and premature mortality. Women disproportionately experience food insecurity, and sexual minority women (i.e., lesbian, bisexual, and heterosexual women reporting same-sex behavior; SMW) may be at greater risk for experiencing food insecurity disparities. The purpose of this study was to investigate patterns and prevalence of food insecurity and food assistance use in sexual minority and exclusively heterosexual women using population-level health surveillance data. METHODS:Using pooled 2004-2014 National Health and Nutrition Examination Survey data (N =?7379), we estimated weighted point prevalence of past 12-month food insecurity, severe food insecurity, Supplemental Nutrition Assistance Program (SNAP) use, and emergency food assistance use. We then used Poisson regression with robust variance to estimate prevalence ratios comparing SMW to exclusively heterosexual women on all outcomes. Women were classified by sexual identity and lifetime same-sex behavior as lesbian (n =?88), bisexual (n =?251), heterosexual and reporting same-sex behavior (heterosexual WSW; n =?366), or exclusively heterosexual women (referent; n =?6674). RESULTS:Between 20.6-27.3% of lesbian, bisexual, and heterosexual WSW reported past 12-month food insecurity (versus 13.1% of exclusively heterosexual women). All SMW reported greater prevalence of past 12-month food insecurity and severe food insecurity than exclusively heterosexual women: prevalence ratios (PR) ranged from 1.34 (95% confidence interval [CI], 1.05-1.70) to 1.84 (95% CI, 1.13-3.01). No differences were found in SNAP participation by sexual orientation, but more lesbians and heterosexual WSW reported using emergency food assistance in the past 12-months (PR?=?1.89; 95% CI, 1.29-2.79 and PR?=?1.43; 95% CI, 1.03-2.00 respectively). CONCLUSIONS:All SMW reported higher prevalence of food insecurity than exclusively heterosexual women. Lesbians and heterosexual WSW were also more likely to rely on emergency food assistance. This is problematic as SNAP use may reduce food insecurity over time, but emergency food resources (e.g., food pantries) do not. More evidence is needed to understand the multilevel factors driving food insecurity in this population to develop policy and community-based efforts to increase SNAP participation and decrease food insecurity.

Dataset Information

Changes in daily activity patterns with age in U.S. men and women: National Health and Nutrition Examination Survey 2003-04 and 2005-06.

Publications

Changes in daily activity patterns with age in U.S. men and women: National Health and Nutrition Examination Survey 2003-04 and 2005-06.

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