Carbohydrates do not accelerate force recovery after glycogen-depleting followed by high-intensity exercise in humans.

摘要: Prolonged low-frequency force depression (PLFFD) induced by fatiguing exercise is characterized a persistent in submaximal contractile during the recovery period. Muscle glycogen depletion known to limit physical performance prolonged low- and moderate-intensity exercise, accelerating resynthesis with post-exercise carbohydrate intake can facilitate improve repeated bout performance. Short-term, high-intensity however, cause PLFFD without any marked decrease glycogen. Here, we studied whether from was accelerated ingestion after 60 minutes of glycogen-depleting cycling followed six 30-seconds all-out sprints. We used randomized crossover study design where nine recreationally active males drank beverage containing either or placebo exercise. Blood glucose muscle concentrations were determined at baseline, immediately post-exercise, 3-hours Transcutaneous electrical stimulation quadriceps performed determine extent eliciting (20 Hz) high-frequency (100 stimulations. severely depleted significantly higher rate period than trials (13.7 5.4 mmol glucosyl units/kg wet weight/h, respectively). Torque 20 Hz more depressed 100 torque both conditions, (20/100 ratio) not different between two trials. In conclusion, supplementation enhances but does when also involves