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最終更新日：2025/03/30
石橋 彩
イシバシ アヤ
(Aya Ishibashi)
論文
- タイトル
- タイトル（英）
- Augmented muscle glycogen utilization following a single session of sprint training in hypoxia.
- 参照URL
- https://researchmap.jp/aya_1484/published_papers/39596994
- 著者
- 著者（英）
- Nobukazu Kasai,Fumiya Tanji,Aya Ishibashi,Hayato Ohnuma,Hideyuki Takahashi,Kazushige Goto,Yasuhiro Suzuki
- 担当区分
- 概要
- 概要（英）
- PURPOSE: This study determined the effect of a single session of sprint interval training in hypoxia on muscle glycogen content among athletes. METHODS: Ten male college track and field sprinters (mean ± standard error of the mean: age, 21.1 ± 0.2 years; height, 177 ± 2 cm; body weight, 67 ± 2 kg) performed two exercise trials under either hypoxia [HYPO; fraction of inspired oxygen (FiO2), 14.5%] or normoxia (NOR: FiO2, 20.9%). The exercise consisted of 3 × 30 s maximal cycle sprints with 8-min rest periods between sets. Before and immediately after the exercise, the muscle glycogen content was measured using carbon magnetic resonance spectroscopy in vastus lateralis and vastus intermedius muscles. Moreover, power output, blood lactate concentrations, metabolic responses (respiratory oxygen uptake and carbon dioxide output), and muscle oxygenation were evaluated. RESULTS: Exercise significantly decreased muscle glycogen content in both trials (interaction, P = 0.03; main effect for time, P < 0.01). Relative changes in muscle glycogen content following exercise were significantly higher in the HYPO trial (- 43.5 ± 0.4%) than in the NOR trial (- 34.0 ± 0.3%; P < 0.01). The mean power output did not significantly differ between the two trials (P = 0.80). The blood lactate concentration after exercise was not significantly different between trials (P = 0.31). CONCLUSION: A single session of sprint interval training (3 × 30 s sprints) in hypoxia caused a greater decrease in muscle glycogen content compared with the same exercise under normoxia without interfering with the power output.
- 出版者・発行元
- 出版者・発行元（英）
- 誌名
- 誌名（英）
- European journal of applied physiology
- 巻
- 121
- 号
- 11
- 開始ページ
- 2981
- 終了ページ
- 2991
- 出版年月
- 2021年11月
- 査読の有無
- 招待の有無
- 掲載種別
- 研究論文（学術雑誌）
- ISSN
- DOI URL
- https://doi.org/10.1007/s00421-021-04748-8
- 共同研究・競争的資金等の研究課題