Figure 2From: The effects of low and high glycemic index foods on exercise performance and beta-endorphin responsesRPE, heart rate and ventilation 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 10 for the HGI group (P < 0.05),b Significantly different from 10 for the LGI group (P < 0.05),c Significantly different from 10 for the control group (P < 0.05).Back to article page