Fig. 3From: Best Time of Day for Strength and Endurance Training to Improve Health and Performance? A Systematic Review with Meta-analysisMeta-analysis of the standardized mean differences (SMD) for the change in performance due to the intervention, calculated as post-intervention value minus pre-intervention value, between morning training and evening training. Positive effect sizes indicate a higher improvement during the intervention period in the evening training condition, while negative effect sizes indicate a higher improvement in the morning training conditionBack to article page