Effects of exercise based on ACSM recommendations on anxiety in children and adolescents: a meta-analysis of randomized controlled trials.

In contrast, cardiorespiratory-resistance (SMD= −0.39, 95% CI: −1.59 to 0.82, p = 0.53, I 2 = 91%) and cardiorespiratory-flexibility (SMD = −0.73, 95% CI: −2.53 to 1.07, p = 0.43, I 2 = 90%) did not reach statistical significance ( Figure 8 ).

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