- 著者
- Junichi Inatomi Satoko Kataoka Sanae Hatada Yutaka Yano Kenji Hagihara Masatoshi Katsura Hideaki Takebayashi Masahiro Yamaguchi
- 出版者
- 社団法人 日本作業療法士協会
- 雑誌
- Asian Journal of Occupational Therapy (ISSN:13473476)
- 巻号頁・発行日
- vol.18, no.1, pp.173-180, 2022 (Released:2022-09-21)
- 参考文献数
- 23
Background: Outcome of motor practice is influenced by focus of attention. Paying attention to the environment (external focus) has been reported to be more effective than paying attention to body movements (internal focus). On the other hand, internal focus was reported to be more effective for novice sports players, indicating that the optimal focus differs among individuals. Outcome of motor practice is also reported to be influenced by motor imagery ability, where subjects with higher motor imagery ability show better outcomes. However, the possible relation between optimal focus of attention and motor imagery ability is not yet known.Methods: In this study, we evaluated the motor imagery ability of healthy young students using a mental rotation task, and divided the subjects into low-motor-imagery and high-motor-imagery groups. The subjects performed the Functional Reach Test, which reflects balance ability, and performance was examined during and after repeated practice with different focuses of attention. Results: Internal focus was more effective than external focus for the low-motor-imagery groups, while internal focus and external focus were similarly effective for high-motor-imagery groups. Conclusion: These results indicate the relation between optimal focus of attention and motor imagery ability, and suggest the importance of evaluating motor imagery ability in choosing optimal focus of attention for motor practice.
- 著者
- Hiroyuki Takasu Haruka Inomata Koji Uchino Saki Tahara Koichiro Mori Yuna Hirano Kana Harada Masahiro Yamaguchi Yuichi Nozoe Hisashi Akiyama
- 出版者
- The Plankton Society of Japan, The Japanese Association of Benthology
- 雑誌
- Plankton and Benthos Research (ISSN:18808247)
- 巻号頁・発行日
- vol.14, no.4, pp.320-323, 2019-11-27 (Released:2019-11-25)
- 参考文献数
- 19
- 被引用文献数
- 9
We surveyed the spatial and temporal distribution of Japanese sea nettle jellyfish Chrysaora pacifica in Omura Bay, Japan, using an environmental DNA (eDNA) method. In 2018, the C. pacifica eDNA concentration increased from March–May at all depths. The seasonal pattern of C. pacifica eDNA was consistent with previous reports based on visual observations along the Japanese coast. Thus, the eDNA method might have advantages to follow the seasonal pattern of C. pacifica while being less time-consuming and less laborious compared with traditional methods. The eDNA concentrations tended to reach a maximum near and/or below the pycnocline throughout this study. Therefore, the vertical distribution of C. pacifica medusae may have been restricted by strong pycnocline formation in July and August 2018. However, even with a weak pycnocline, which C. pacifica should be able to swim across, the apparent distribution of C. pacifica eDNA seems to be restricted by the pycnocline. Therefore, the eDNA method cannot, currently, accurately assess the absolute vertical distribution pattern of C. pacifica, especially when a pycnocline is formed.