- 著者
- Masayuki Konishi Masaki Takahashi Naoya Endo Shigeharu Numao Shun Takagi Masashi Miyashita Taishi Midorikawa Katsuhiko Suzuki Shizuo Sakamoto
- 出版者
- 一般社団法人日本体力医学会
- 雑誌
- The Journal of Physical Fitness and Sports Medicine (ISSN:21868131)
- 巻号頁・発行日
- vol.2, no.1, pp.121-126, 2013-03-25 (Released:2013-04-08)
- 参考文献数
- 31
- 被引用文献数
- 1 2
The aim of this study was to investigate the effects of one night of sleep deprivation on maximal fat oxidation during a graded exercise test. Ten healthy young males underwent two 2-day control and sleep deprivation trials. Participants were allowed normal sleep from 2300 to 0700 for the control trial, whereas they were required to stay awake for 34 h during the sleep deprivation trial. At 1700 on day 2, participants performed a graded exercise test to exhaustion on a treadmill; this allowed us to determine maximal oxygen uptake and maximal fat oxidation. Before and immediately after the graded exercise test, blood samples were collected in order to measure glucose, insulin, free fatty acid, and triglyceride concentrations. Plasma glucose concentrations were significantly higher in the sleep deprivation trial than in the control trial before the graded exercise test. Serum insulin and free fatty acid concentrations were not significantly different between the two trials. Serum triglyceride concentrations were significantly lower in the sleep deprivation trial than in the control trial. The maximal fat oxidation rate, oxygen uptake, and heart rate at maximal fat oxidation intensity, during the graded exercise test, were not significantly different between the two trials. These findings suggest that maximal fat oxidation during graded exercise is unaffected by one night of sleep deprivation.
- 著者
- Daishi HIGASHIDE Takeo KURIYAMA Shun TAKAGI Hiroo NUMATA Mayumi YOKOYAMA
- 出版者
- The Ornithological Society of Japan
- 雑誌
- ORNITHOLOGICAL SCIENCE (ISSN:13470558)
- 巻号頁・発行日
- vol.22, no.2, pp.161-168, 2023 (Released:2023-08-01)
- 参考文献数
- 36
Japanese Night Heron Gorsachius goisagi has recently been down-listed in status from Endangered to Vulnerable by BirdLife International due to the presence of a likely larger population than previously considered. However, there is still relatively little known about the ecology and current population status of this rare, elusive, and solitary species. In this study, we used infrared cameras to study its behaviour. We installed cameras at 120 locations on the forest floor of Awaji Island, Hyogo Prefecture, Japan, over approximately one year. Japanese Night Heron was recorded at 15 locations (132 video files of 25 independent events). All records except one were obtained during the daytime, and all involved herons walking on the forest floor where they were searching for potential prey items (most likely earthworms). Both adult and recently fledged juvenile herons were recorded, providing direct evidence that the species breeds on Awaji Island. Additionally, a zero-inflated Poisson GLMM analysis showed that Japanese Night Heron may not prefer evergreen coniferous plantations. Our results not only indicate that the species forages diurnally, contrary to its common name, but also sheds light on the importance of maintaining forests and foraging ground environments for the conservation of this species.