Τετάρτη 29 Νοεμβρίου 2017

Adipose Lipolysis Unchanged by Preexercise Carbohydrate regardless of Glycemic Index

ABSTRACT PURPOSE To determine the impact of pre-exercise carbohydrate of different glycemic indices on subcutaneous abdominal adipose tissue (SCAAT) metabolism and running performance. METHODS Ten trained male runners completed three experimental trials consisting of 30 min at 60% VO2max, 30 min at 75% VO2max, and a 5-km time trial (TT). Thirty min prior to exercise, participants consumed one of three beverages: 1) 75 g low glycemic index modified starch supplement (UCAN), 2) 75 g high glycemic index glucose-based supplement (G), or 3) a flavor-matched non-caloric placebo (PL). SCAAT lipolysis was assessed via microdialysis. RESULTS Prior to exercise, blood glucose and insulin were elevated with G vs. PL (+53.0 ± 21.3 mg[BULLET OPERATOR]dL-1 [SD]; p

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