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A: there was a significant correlation between physical activity at study initiation and after 3 mo (r = 0.79, P < 0.0001). B: the quartile of monkeys that had the lowest physical activity had significantly greater weight gain than the quartile of monkeys that had the highest physical activity (t = −2.7, df = 8, P = 0.03). *Significant difference in percent change in body weight between groups.
