Aim
To assess the prospective association between objectively measured physical activity and kidney function over 4 years in people with Type 2 diabetes.

Methods
Individuals (120 women and 206 men) participating in the ADDITION‐Plus trial underwent assessment of sedentary time (SED‐time), time spent in moderate‐to‐vigorous‐intensity physical activity (MVPA) and total physical activity energy expenditure (PAEE) using a combined heart rate and movement sensor, and kidney function [estimated glomerular filtration rate (eGFR), serum creatinine and urine albumin‐to‐creatinine ratio (ACR)] at baseline and after 4 years of follow‐up. Multivariate regression was used to quantify the association between change in SED‐time, MVPA and PAEE and kidney measures at four‐year follow‐up, adjusting for change in current smoking status, waist circumference, HbA1c, systolic blood pressure, triglycerides and medication usage.

Results
Over 4 years, there was a decline in eGFR values from 87.3 to 81.7 ml/min/1.73m2 (P < 0.001); the prevalence of reduced eGFR (eGFR < 60 ml/min/1.73m2) increased from 6.1 to 13.2% (P < 0.001). There were small increases in serum creatinine (median: 81–84 μmol/l, P < 0.001) and urine ACR (median: 0.9–1.0 mg/mmol, P = 0.005). Increases in SED‐time were associated with increases in serum creatinine after adjustment for MVPA and cardiovascular risk factors (β = 0.013, 95% CI: 0.001, 0.03). Conversely, increases in PAEE were associated with reductions in serum creatinine (β = –0.001, 95% CI: –0.003, –0.0001).

Conclusion
Reducing time spent sedentary and increasing overall physical activity may offer intervention opportunities to improve kidney function among individuals with diabetes. (Trial Registry no. ISRCTN 99175498)

Direct Link: https://doi.org/10.1111/dme.12886

Journal: Diabetic Medicine. 2016 Sep;33(9):1222-9.

Keywords: clinical trial, diabetes, energy expenditure, kidney function, MVPA, Physical Activity, Sedentary behaviour,

Applications: Energy Expenditure,

CamNtech Reference: AH15008

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