Figure 3 Muscle glycogen concentration see more following the 16 day dietary intervention and exercise trial day, which consisted of a resting (rest) muscle biopsy, another following 60 min cycling at 70% VO 2 max (70%) , time to fatigue at 90% VO 2 max (90%) and at the end of 6 h recovery (6 h recovery). Carbohydrate (CHO) and carbohydrate and whey protein

isolates (CHO + WPI) trial were similar at rest. All time points following exercise were lower than rest in both trials (# P < 0.05). CHO + WPI trial was increased selleckchem from 90% VO2 max to end of 6 h recovery (* P < 0.05). Values are means ± SEM (n = 6). Figure 4 Glycogen synthase mRNA expression for the carbohydrate (CHO) and carbohydrate and whey protein isolates (CHO + WPI) trials. No differences were observed. Values are means ± SEM (n = 6). AMPK-α2 mRNA expression (Figure 5) was similar for CHO and CHO + WPI trials. Following cycling at 90% VO2 max

and end of 6 h recovery, the CHO trial was lower compared to rest (P < 0.05). PGC-1α mRNA expression (Figure 6) was significantly higher at the end of 6 h recovery compared to all other time points in the CHO + WPI trial (P < 0.05). Following 6 h recovery the CHO + WPI trial was significantly higher (P < 0.05) compared to the isocaloric carbohydrate matched CHO trial. Figure 5 AMPK-α2 mRNA expression for carbohydrate (CHO) and carbohydrate and whey protein isolates (CHO + WPI) trials. CHO group is significantly different https://www.selleckchem.com/PARP.html from rest to 90% and rest to end recovery (* P < 0.05). Values are mean ± SEM (n = 6). Figure 6 PGC-1α mRNA expression for carbohydrate (CHO) and carbohydrate and whey protein isolate trials (CHO + WPI) following 16 day dietary intervention and exercise trial. Muscle biopsies were taken at rest, another following 60 min cycling at 70% VO2 max (70%), time to fatigue at 90% VO2 max (90%) and at the end of 6 h recovery (6 h recovery). CHO + WPI trial was significantly lower at rest, following cycling at 70% and 90% VO2  max, compared to 6 h recovery

aminophylline (# P < 0.05). After 6 h of recovery the CHO + WPI trial was significantly increased compared to CHO trial (^P < 0.05). Values are mean ± SEM (n = 6). Discussion Protein is considered a key nutritional component for athletic success, however there appears to be a lack of information regarding the effect of combined CHO and protein supplementation on exercise adaptations during recovery. This study compared 2 weeks co-ingestion of whey protein isolates supplementation combined with a high carbohydrate diet with an iso-caloric carbohydrate matched diet in endurance athletes. Protein supplementation with adequate carbohydrate availability, included in a regular training program, did not influence intense aerobic cycling performance or pre- and post-exercise muscle glycogen levels.