Substrate oxidation
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The cumulative fat and carbohydrate oxidation values during the 60-min walk (11.00–12.00) are shown in Cumulative fat (a) and carbohydrate oxidation (b) during the 60-min walking exercise in the high and low glycaemic index (GI) trials. Values are means ± The fat and carbohydrate oxidation rates throughout the trial are shown in Fat (a) and carbohydrate oxidation rate (b) in the high and low glycaemic index (GI) trials. Values are means ± 