• Exercise intervention features No significant difference in the size of the effect was found for exercise interventions that met exercise guidelines versus interventions that did not meet the guidelines: QB(1) = 0.23, p = .63. With regard to the dose- response for exercise, we found that exercise duration (M duration = 49.09 min, range = 20 to 75 min; z = .75, p = .45), length of intervention in weeks (M length