Occupational Physical Activity and Weight-Related Outcomes in Immigrant Mothers

New immigrants are likely to be employed in occupations that provide physical activity; however, these positions may place workers at risk for adverse health outcomes. Relationships between occupational physical activity (OPA); weight-related behaviors; obesity; and depression remain underexplored among recent immigrants.

Participants (N=385) were Brazilian, Haitian, and Latino mothers enrolled in a community-based participatory research lifestyle intervention among immigrant mothers (<10 years in U.S.). Baseline BMI was calculated using objectively measured height and weight. Self-reported baseline data included sociodemographics; physical activity (Pregnancy Physical Activity Questionnaire); depressive symptoms (Center for Epidemiological Studies-Depression Scale); and prepared food purchasing frequency. Logistic regression models estimated the odds of obesity (BMI ≥30.0); high depressive symptoms (score ≥16); and purchasing prepared foods (≥1 times/week) by OPA quartile. Models adjusted for covariates, including household composition, origin group, maternal age, education, household income, and recruitment year (2010, 2011). Data were analyzed in 2013.

Employed participants (49%) primarily worked as domestic workers, nursing assistants, and food service staff. In adjusted models, women in the highest OPA quartile versus lowest had 65% lower obesity odds (95% CI=0.16, 0.76) and approximately twice the odds of presenting high depressive symptoms (2.01, 95% CI=1.02, 4.27) and purchasing takeout food (1.85, 95% CI=0.90, 3.90), which was attenuated after adjusting for income and education (unadjusted OR=1.98, 95% CI=1.10, 3.52).

OPA contributes to energy expenditure and may protect against obesity among new immigrant mothers; however, it is also associated with high depressive symptoms. Implications for physical and psychosocial well-being are mixed.