Effect of Different Carbohydrate Intakes within 24 Hours after Glycogen Depletion on Muscle Glycogen Recovery in Japanese Endurance Athletes

Daily muscle glycogen recovery after training is important for athletes. Few studies have reported a continuous change in muscle glycogen for 24 h. We aimed to investigate the changes in carbohydrate intake amount on muscle glycogen recovery for 24 h after exercise using ¹³C-magnetic resonance spectroscopy (¹³C-MRS). In this randomized crossover study, eight male participants underwent prolonged high-intensity exercise, and then consumed one of the three carbohydrate meals (5 g/kg body mass (BM)/d, 7 g/kg BM/d, or 10 g/kg BM/d). Glycogen content of thigh muscle was measured using ¹³C-MRS before, immediately after, and 4 h, 12 h and 24 h after exercise. Muscle glycogen concentration decreased to 29.9 ± 15.9% by exercise. Muscle glycogen recovery 4–12 h after exercise for the 5 g/kg group was significantly lower compared to those for 7 g/kg and 10 g/kg groups (p < 0.05). Muscle glycogen concentration after 24 h recovered to the pre-exercise levels for 7 g/kg and 10 g/kg groups; however, there was a significant difference for the 5 g/kg group (p < 0.05). These results suggest that carbohydrate intake of 5 g/kg BM/d is insufficient for Japanese athletes to recover muscle glycogen stores 24 h after completing a long-term high-intensity exercise. View Full-Text

Keywords: glycogen; recovery; carbohydrate; ¹³C-magnetic resonance spectroscopy; exercise; muscle

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Namma-Motonaga, K.; Kondo, E.; Osawa, T.; Shiose, K.; Kamei, A.; Taguchi, M.; Takahashi, H. Effect of Different Carbohydrate Intakes within 24 Hours after Glycogen Depletion on Muscle Glycogen Recovery in Japanese Endurance Athletes. Nutrients 2022, 14, 1320. https://doi.org/10.3390/nu14071320

AMA Style

Namma-Motonaga K, Kondo E, Osawa T, Shiose K, Kamei A, Taguchi M, Takahashi H. Effect of Different Carbohydrate Intakes within 24 Hours after Glycogen Depletion on Muscle Glycogen Recovery in Japanese Endurance Athletes. Nutrients. 2022; 14(7):1320. https://doi.org/10.3390/nu14071320

Chicago/Turabian Style

Namma-Motonaga, Keiko, Emi Kondo, Takuya Osawa, Keisuke Shiose, Akiko Kamei, Motoko Taguchi, and Hideyuki Takahashi. 2022. "Effect of Different Carbohydrate Intakes within 24 Hours after Glycogen Depletion on Muscle Glycogen Recovery in Japanese Endurance Athletes" Nutrients 14, no. 7: 1320. https://doi.org/10.3390/nu14071320

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Effect of Different Carbohydrate Intakes within 24 Hours after Glycogen Depletion on Muscle Glycogen Recovery in Japanese Endurance Athletes

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