XXXX and endurance running performance relative to @entity13897 .

@entity1 @entity13897 @entity2653 @entity344 @entity458
UNASSIGNED: This study aimed to determine whether glucose-fructose (GF) ingestion, relative to @entity13897 , would alter performance, metabolism, gastrointestinal (GI) symptoms, and @entity458 affect during prolonged running. On two occasions, 20 runners (14 @entity1 ) completed a 120-min submaximal run followed by a 4-mile time trial (TT). @entity1 consumed @entity13897 (G) or GF (1.2:1 ratio) beverages, which supplied       1.3   g/min of carbohydrate. Substrate use, blood lactate, @entity458 affect [ @entity2653 ( @entity2653 )], and @entity344 were measured. Differences between conditions were assessed using magnitude-based inferential statistics. @entity1 completed the TT 1.9% (-1.9; -4.2, 0.4) faster with GF, representing a likely benefit. @entity2653 ratings were possibly higher and GI symptoms were possibly-to-likely lower with GF during the submaximal period and TT. Effect sizes for @entity344 and @entity2653 ratings were relatively small (Cohen's d   =      0.2 to 0.4). GF resulted in possibly higher fat oxidation during the submaximal period. No clear differences in lactate were observed. In conclusion, GF ingestion - compared with @entity13897 - likely improves TT performance after 2   h of submaximal @entity344 and @entity458 affect are likely mechanisms. These results apply to runners consuming fluid at 500-600   mL/h and carbohydrate at 1.0-1.3   g/min during running at 60-70% VO2peak .
