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(a) Serum insulin concentration values for placebo (PL) and β-hydroxy-β-methylbutyrate free acid (HMB-FA) groups before exercise (PRE), immediately after exercise (IP), and 30 minutes after exercise (30P). *Both groups significantly elevated from PRE (P ≤ 0.01). (b) Area under the curve (AUC) analysis for serum insulin levels for PL and HMB-FA groups. Data were reported as mean ± SD.
