Lower Post MI Physical Activity in Areas With Low Income

Low neighborhood socioeconomic status predicts lower leisure-time physical activity uptake

THURSDAY, Aug. 4 (HealthDay News) -- Low neighborhood socioeconomic status (SES) is a significant predictor of lower uptake of leisure-time physical activity (LTPA) by survivors of myocardial infarction (MI), even after adjusting for individual SES and clinical profile, according to a study published online Aug. 2 in the American Journal of Preventive Medicine.

Yariv Gerber, Ph.D., from Tel Aviv University in Israel, and colleagues investigated whether neighborhood SES predicts the long-term trajectory of LTPA among 1,410 patients (≤65 years) who had their first MI between 1992 and 1993. The participants were followed up through 2005, and analyses were conducted between 2010 and 2011. LTPA was classified as regular, irregular, or none, and was reported at baseline, between three to six months, between one to two years, at five years, and between 10 to 13 years post-MI. LTPA was analyzed using generalized estimating equations (GEE).

The investigators found that, post MI, LTPA engagement was poor. The LTPA point prevalence rates were 33 to 37 percent for inactivity and 19 to 27 percent for irregular activity. Compared to LTPA levels in the upper neighborhood SES tertile, the GEE-derived odds ratio (OR) for decreased LTPA levels in the lower and middle neighborhood SES tertiles were 2.49 and 1.60, respectively. After adjusting for individual SES measures, cardiovascular risk factors, MI characteristics, and disease-severity indices, the GE-derived ORs for decreased LTPA levels were 1.55 and 1.23, respectively.

"Low neighborhood SES is a powerful predictor of poor LTPA uptake in MI survivors, even after extensive adjustment for individual SES and baseline clinical profile. LTPA may thus represent an intermediate mechanism between neighborhood SES and post-MI outcome," the authors write.

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