Hazuki Ogata
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Hazuki Ogata has a total of 12 co-authors. Here are the top co-authors by number of shared publications:
- Akira Ishikawa
Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo 158-8508, Japan
2 shared publications - Mikako Sakamaki-Sunaga
Faculty of Childhood Sport Education, Nippon Sport Science University, Tokyo, Japan
2 shared publications - Mizuki Yamada
Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo 158-8508, Japan
2 shared publications - Moe Kanno
Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo 158-8508, Japan
2 shared publications - Nodoka Ikegami
Department of Exercise Physiology, Nippon Sport Science University, Tokyo 158-8508, Japan
2 shared publications - Tomoka Matsuda
Research Center of Health, Physical Fitness and Sports, Nagoya University, Aichi, 464-8601, Japan
2 shared publications
Latest Publications
- Open Access
Effect of Green Tea Extract Ingestion on Fat Oxidation during Exercise in the Menstrual Cycle: A Pilot Study
In women, fat oxidation during exercise changes with the menstrual cycle. This study aimed to investigate the effect of green tea extract (GTE) ingestion on fat oxidation during exercise depending on the menstrual cycle phase. Ten women with regular menstrual cycles participated in this randomized, double-blind, crossover study. GTE or placebo was administered during the menstrual cycle’s follicular phase (FP) and luteal phase (LP). Participants cycled for 30 min at 50% maximal workload, and a respiratory gas analysis was performed. Serum estradiol, progesterone, free fatty acid, plasma noradrenaline, blood glucose, and lactate concentrations were assessed before, during, and after the exercise. Fat oxidation, carbohydrate oxidation, and the respiratory exchange ratio (RER) were calculated using respiratory gas. Fat oxidation during the exercise was significantly higher in the FP than in the LP with the placebo (p < 0.05) but did not differ between the phases with GTE. Carbohydrate oxidation, serum-free fatty acid, plasma noradrenaline, blood glucose, and lactate concentrations were not significantly different between the phases in either trial. Our results suggest that GTE ingestion improves the decrease in fat oxidation in the LP.
Open AccessEffect of Green Tea Extract Ingestion on Fat Oxidation during Exercise in the Menstrual Cycle: A Pilot Study
In women, fat oxidation during exercise changes with the menstrual cycle. This study aimed to investigate the effect of green tea extract (GTE) ingestion on fat oxidation during exercise depending on the menstrual cycle phase. Ten women with regular menstrual cycles participated in this randomized, double-blind, crossover study. GTE or placebo was administered during the menstrual cycle’s follicular phase (FP) and luteal phase (LP). Participants cycled for 30 min at 50% maximal workload, and a respiratory gas analysis was performed. Serum estradiol, progesterone, free fatty acid, plasma noradrenaline, blood glucose, and lactate concentrations were assessed before, during, and after the exercise. Fat oxidation, carbohydrate oxidation, and the respiratory exchange ratio (RER) were calculated using respiratory gas. Fat oxidation during the exercise was significantly higher in the FP than in the LP with the placebo (p < 0.05) but did not differ between the phases with GTE. Carbohydrate oxidation, serum-free fatty acid, plasma noradrenaline, blood glucose, and lactate concentrations were not significantly different between the phases in either trial. Our results suggest that GTE ingestion improves the decrease in fat oxidation in the LP.
- Open Access
- 30 March 2022
- Published by Journal of Sports Science and Medicine in Journal of Sports Science and Medicine
- Vol. 21 (2) , 191-199
The Effect of Co-Ingestion of Carbohydrate with Milk after Exercise in Healthy Women: Study Considering the Menstrual Cycle
The Effect of Co-Ingestion of Carbohydrate with Milk after Exercise in Healthy Women: Study Considering the Menstrual Cycle
- 30 March 2022
- Published by Journal of Sports Science and Medicine in Journal of Sports Science and Medicine
- Vol. 21 (2) , 191-199
Open AccessThe Effect of Co-Ingestion of Carbohydrate with Milk after Exercise in Healthy Women: Study Considering the Menstrual Cycle
The Effect of Co-Ingestion of Carbohydrate with Milk after Exercise in Healthy Women: Study Considering the Menstrual Cycle