Fig. 2From: Metformin to Augment Strength Training Effective Response in Seniors (MASTERS): study protocol for a randomized controlled trialPreliminary analyses of the effects of metformin on muscle tissue. Effects of metformin on muscle tissue M2 macrophage (CD68 + CD206+) frequency (a) and IL-1β inflammatory gene expression (b). *Different from pre-treatment, p < 0.05. Values are mean ± standard error (SE)Back to article page