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Association between age and accelerometry‐derived metrics of physical activity. A, Moderate‐to‐vigorous physical activity declined with age in boys (ρ=−0.35, P=0.01) and in girls (ρ=−0.36, P=0.02). B, Sedentary time increased in both groups (ρ=0.55–0.58, P<0.001).
