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β-Endorphin responses during exercise after the ingestion of LGI, HGI and control meal (mean ± SEM). LGI: Low Glycemic Index; HGI: High Glycemic Index.a Significantly different from -30 for the HGI group (P < 0.05),b Significantly different from -30 for the LGI group (P < 0.05),c Significantly different from -30 for the control group (P < 0.05).
