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最終更新日：2024/02/29
高井 恵理
タカイ エリ
(Eri Takai)
論文
- タイトル
- タイトル（英）
- Comparison of three type of muscle glycogen loading interventions using a very-high-carbohydrate diet in an elite male racewalker: a case report
- 参照URL
- https://researchmap.jp/7000019740/published_papers/42151156
- 著者
- 著者（英）
- Emi Kondo,Eri Takai,Hiroyuki Sagayama,Hideyuki Takahashi
- 担当区分
- 概要
- 概要（英）
- PURPOSE: Muscle glycogen storage before a race is necessary for endurance athletes to achieve the best performance. Generally, the recommended carbohydrate intake for preparation over 90 min of the race is 10-12 g·kg--1·day--1. However, it remains unclear whether an elite athlete with an already high-carbohydrate diet can further increase muscle glycogen through a very-high-carbohydrate intake. Therefore, we compared the effects of three types of glycogen loading in a 28-year-old male athlete who belongs to the top 50 racewalkers in the world, consuming a daily energy intake of 4507 kcal and a carbohydrate intake of 12.7 g·kg--1·day--1. METHODS: The racewalker consumed very-high-carbohydrate diets three times for 2 days each, 13.7 g·kg--1·day--1 for trial 1, 13.9 g·kg--1·day--1 for trial 2, and 15.9 g·kg--1·day-1 for trial 3. Muscle glycogen concentrations in the anterior (vastus lateralis and vastus intermedius) and posterior thighs (semimembranosus, semitendinosus, and biceps femoris) were measured using carbon-13 magnetic resonance spectroscopy. RESULTS: Muscle glycogen concentrations in both the anterior and posterior thighs increased in all trials, particularly in trial 3. Body mass also increased by 1.5 kg in trials 1 and 2 and by 1.8 kg in trial 3 before and after the trials. The participant felt satiated throughout the day and experienced stomach discomfort during trial 3. CONCLUSION: We found that a 2-day very-high-carbohydrate diet and tapering of training could further increase the muscle glycogen concentration in athletes. However, we speculated that 15.9 g·kg--1·day--1 carbohy.
- 出版者・発行元
- 出版者・発行元（英）
- 誌名
- 誌名（英）
- Physical Activity and Nutrition
- 巻
- 27
- 号
- 1
- 開始ページ
- 47
- 終了ページ
- 54
- 出版年月
- 2023年3月31日
- 査読の有無
- 査読有り
- 招待の有無
- 掲載種別
- 研究論文（学術雑誌）
- ISSN
- DOI URL
- https://doi.org/10.20463/pan.2023.0006
- 共同研究・競争的資金等の研究課題