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Forest plot of effects on endurance of the different types of exercise training, exercises of limb and postural muscle vs no exercise (4.1.1), respiratory muscle training (RMT) and breathing exercises vs no exercise (4.1.2), and RMT vs placebo (4.1.3) in persons with DMD. 95% CI: 95% confidence interval; df: degrees of freedom; I2: measure of heterogeneity; Tau2: measure of variance; SD: standard deviation.
