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Background and Aims: Physical inactivity is associated with cardiovascular risk however its relationship to chronic kidney disease is largely unknown. We examined the association between leisure-time physical activity and risk of chronic kidney disease in a prospective, population-based cohort of Australians aged ≥25 years (AusDiab). Methods and Results: The baseline sample included 10,966 adults (4951 males and 6015 females). From this sample, 6318 participants with complete baseline and 5-year follow-up urinalysis and serum creatinine measurements formed the study population for longitudinal analysis. Self-reported leisure-time physical activity was measured using a validated, interviewer–administered questionnaire. Compared with sufficiently active individuals (≥150 min physical activity per week), those who were inactive (0 min/week) were more likely to have albuminuria at baseline (multivariate-adjusted OR = 1.34, 95% CI 1.10–1.63). Inactivity (versus sufficient physical activity) was associated with increased age- and sex-adjusted odds of an estimated glomerular filtration rate < 3rd percentile (OR = 1.30, 95% CI 1.02–1.65), although this was not significant after multivariate adjustment (OR = 1.17, 95% CI 0.91–1.50). Obese, inactive individuals were significantly more likely to have albuminuria at baseline (multivariate-adjusted OR = 1.74, 95% CI 1.35–2.25), compared with sufficiently active, non-obese individuals. Baseline physical activity status was not significantly associated with longitudinal outcomes. Conclusions: Physical inactivity is cross-sectionally associated with albuminuria prevalence, particularly when combined with obesity. Future studies are needed to determine whether this association is causal and the importance of physical activity in CKD prevention.


Mary MacKillop Institute for Health Research

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Journal Article

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