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Int J Sport Nutr Exerc Metab. 2015 Mar 26. [Epub ahead of print] A variety of dietary choices are marketed to enhance glycogen recovery after physical activity. Past research informs recommendations regarding the timing, dose, and nutrient compositions to facilitate glycogen recovery. This study examined the effects of isoenergetic sport supplements (SS) vs. fast food (FF) on glycogen recovery and exercise performance. Eleven males completed two experimental trials in a randomized, counterbalanced order. Each trial included a 90-minute glycogen depletion ride followed by a 4-hour recovery period. Absolute amounts of macronutrients (1.54 ± 0.27 g·kg-1 carbohydrate, 0.24 ± 0.04 g·kg fat-1, and 0.18 ± 0.03g·kg protein-1) as either SS or FF were provided at 0 and 2 hours. Muscle biopsies were collected from the vastus lateralis at 0 and 4 hours post exercise. Blood samples were analyzed at 0, 30, 60, 120, 150, 180, and 240 minutes post exercise for insulin and glucose, with blood lipids analyzed at 0 and 240 minutes. A 20k time-trial (TT) was completed following the final muscle biopsy. There have been no variations within the blood glucose and insulin responses. In a similar way, charges of glycogen restoration weren’t completely different throughout the diets (6.9 ± 1.7 and seven.9 ± 2.four mmol·kg moist weight- 1·hr-1 for SS and FF, respectively). There used to be additionally no distinction throughout the diets for TT efficiency (34.1 ± 1.eight and 34.three ± 1.7 minutes for SS and FF, respectively. These information point out that brief-time period meals choices to provoke glycogen resynthesis can embrace dietary choices now not generally marketed as sports activities vitamin merchandise reminiscent of quick meals menu gadgets. |
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