Effect of progressive resistance training with weight loss compared with weight loss alone on the fatty liver index in older adults with type 2 diabetes: secondary analysis of a 12-month randomized controlled trial

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Abstract

Introduction Non-alcoholic fatty liver disease (NAFLD) is highly prevalent (∼75%) in people with type 2 diabetes (T2D). Since exercise and weight loss (WL) are recommended for the management of both NAFLD and T2D, this study examined whether progressive resistance training (PRT) plus WL could lead to greater improvements in the fatty liver index (FLI), an indicator of NAFLD, compared with WL alone in older adults with T2D. Research design and methods This study represents a secondary analysis of a 12-month, two-arm randomised controlled trial including 36 overweight and obese adults (60-80 years) with T2D randomly allocated to supervised PRT plus WL (hypocaloric diet) (n=19) or WL plus sham (stretching) (n=17) for 6 months (phase I), followed by 6-months home-based training with ad libitum diet (phase II). FLI, which is an algorithm based on waist circumference, body mass index, triglycerides and gamma-glutamyl transferase, was assessed at baseline and every 3 months. Linear mixed models were used to analyse between-group differences over time, adjusting for baseline values. Results At baseline, the mean±SD FLI was 76.6±18.5 and the likelihood of NAFLD (FLI >60) in all participants was 86%. Following phase I, both groups had similar statistically significant improvements in FLI (mean change (95% CI): PRT+WL, -12 (-20 to -4); WL, -9 (-15 to -4)), with no significant between-group difference. After the subsequent 6-month home-based phase, the improvements in FLI tended to persist in both groups (PRT+WL, -7 (-11 to -2); WL, -4 (-10 to 1)), with no between-group differences. Conclusions In older overweight adults with T2D, PRT did not enhance the benefits of WL on FLI, a predictor of NAFLD. Trial registration number ACTRN12622000640707.

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APA

Freer, C. L., George, E. S., Tan, S. Y., Abbott, G., Dunstan, D. W., & Daly, R. M. (2022). Effect of progressive resistance training with weight loss compared with weight loss alone on the fatty liver index in older adults with type 2 diabetes: secondary analysis of a 12-month randomized controlled trial. BMJ Open Diabetes Research and Care, 10(5). https://doi.org/10.1136/bmjdrc-2022-002950

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