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Forest plot of the pooled ES on BDNF for the effect of HIE vs. comparison group (MIE, LIE, or non-exercise intervention). Weights are from random effects analysis. 95%CI = 95% confidence interval; BDNF = brain-derived neurotrophic factor; ES = effect size; HIE = high-intensity exercise; LIE = low-intensity exercise; MIE = moderate-intensity exercise.
