Preventive medicine
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Preventive medicine · Dec 2020
Sitting at work & waist circumference-A cross-sectional study of Australian workers.
Studies examining associations of sitting time at work with obesity measures have produced inconsistent findings. Different sample characteristics across studies, e.g., the composition of different occupational groups, may be one explanation for the mixed findings. We examined cross-sectional associations of workplace sitting time with waist circumference in workers engaged in desk-based work and those engaged in other work settings using a population-based sample of Australian workers. ⋯ Our findings support interventions to decrease occupational sitting time for desk-based workers to reduce their cardio-metabolic risk. Differential associations observed between desk-based and non-desk-based workers and between genders may be attributable to the ways in which sitting time is accumulated. Future research is needed to examine the impact of behavior patterns at work (sitting breaks, occupational physical activity) on adiposity in working adults.
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Preventive medicine · Dec 2020
The impact of state policies for school-based BMI/fitness assessments on Children's BMI outcomes in rural versus urban schools: Evidence from a natural experiment.
Childhood obesity remains a public health crisis because of its alarming prevalence and potential for costly long-term health consequences, especially among rural children. Schools are considered natural loci for policies to combat obesity because children spend most of their active hours and consume a substantial share of their calories, at school. Recent state policy efforts have involved measuring children's BMI and/or fitness to notify parents or inform surveillance efforts, but the empirical evidence to date is far from definitive. ⋯ Results were robust to stratification based on urbanicity of the installation versus school, omission of family covariates, and other sensitivity analyses. Falsification checks on children's height, parental BMI outcomes, home food environments and neighborhood environments indicate findings are not driven by selection. BMI assessment policies were associated with children's BMI outcomes and health behaviors in rural, but not urban schools.
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Preventive medicine · Dec 2020
Cross-sectional association between physical activity level and subjective cognitive decline among US adults aged ≥45 years, 2015.
Subjective cognitive decline (SCD) is the self-reported experience of worsening or more frequent confusion or memory loss within the previous 12 months and can be one of the earliest symptoms of Alzheimer's disease. Regular physical activity can contribute to the primary, secondary, and tertiary prevention of cognitive decline. At the national level, prevalence estimates of SCD by physical activity level in the United States are currently unknown. ⋯ Among those with SCD, the prevalence of functional limitations also increased as physical activity level decreased (active: 40.5%; insufficiently active: 50.0%; inactive: 57.4%). These differences largely remained after adjusting for respondent characteristics. Findings highlight the potential public health impact nationally of efforts to promote physical activity for cognitive health.
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Preventive medicine · Dec 2020
Maternal substance use in pregnancy: Differential prediction by childhood adversity subtypes.
Substance use in pregnancy, including alcohol use, drug use, or smoking, is associated with poor health outcomes for both the mother and her unborn child. Building on previous research that has examined the cumulative impact of Adverse Childhood Experiences (ACEs) on maternal binge drinking and alcohol use in pregnancy, the current study sought to examine the association between maternal ACEs and substance use in pregnancy more broadly, including alcohol use, binge drinking, smoking, and drug use. Furthermore, we also examined how different adversity subtypes, including sexual abuse, family violence (physical abuse, emotional abuse), and household dysfunction, differentially predict maternal substance use behavior. ⋯ There were no significant effects for sexual abuse after controlling for covariates. A dose-response association between the number of ACEs and substance use in pregnancy was also demonstrated. Increased support prior to, and in pregnancy, particularly for women with a history of childhood adversity, is needed to reduce substance use behaviors in pregnancy.
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Preventive medicine · Dec 2020
The medical costs of low leisure-time physical activity among working-age adults: Gender and minority status matter.
This study analyzes the direct medical costs of low physical activity by race/ethnicity and gender. Average health expenditures based on physical activity status for Black non-Hispanics (NH), Asian NHs, and Hispanics were compared to White NHs. Data from the National Health Interview Survey were merged with the Medical Expenditure Panel Survey for years 2000-2010 and 2001-2011, respectively, and weights were applied to ensure generalizability to the larger US population. ⋯ Among women, medical expenditures were $956 per year less among active White non-Hispanics relative to their inactive counterparts, and $815 per year among Hispanics. Essentially, the average reduction in health care expenditures is relatively consistent for five out of the eight groups. The absence of any reduction in average health care expenditures for three of the groups, however, suggests that there may be environmental factors at play for certain groups that mitigate the impact of physical activity on health expenditures.