Abstract
The association of physical activity with renal outcome and mortality in advanced chronic kidney disease (CKD; i.e., estimated glomerular filtration rate [eGFR] < 45 ml/min/1.73m2) is poorly studied. We examined this association in patients with advanced CKD in Japan. We used the Rapid Assessment of Physical Activity to assess baseline physical activity and classify patients as active or inactive. CKD progression was defined as 40% decline in eGFR, eGFR < 10, or requiring dialysis or transplantation. Among the 1,808 eligible patients, after adjusting for possible confounders, hazard ratios (HRs) for poor renal outcome in the active group were 0.68 (95% CI, 0.44–1.04), 1.09 (0.86–1.38), and 1.01 (0.82–1.25) in CKD stage G3b, G4, and G5, respectively, suggesting a renal benefit of exercise in CKD stage G3b. Adjusted HRs for death were 0.79 (0.40–1.57), 0.55 (0.38–0.80), and 0.75 (0.44–1.26) in stage G3b, G4, and G5, respectively. While the adjusted HRs of death were 0.84 (0.52–1.38) and 0.60 (0.43–0.83) in diabetic and non-diabetic patients, suggesting that exercise may reduce mortality in non-diabetic patients. Our study suggests that exercise is associated with better survival in non-diabetic patients with CKD stage G3b-5, and better renal outcome in diabetic and non-diabetic CKD stage G3b.
Published Version
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