- 著者
- Masaki Hasegawa Shusaku Kanai Michele Eisemann Shimizu Sadaaki Oki Akira Otsuka
- 出版者
- The Society of Physical Therapy Science
- 雑誌
- Journal of Physical Therapy Science (ISSN:09155287)
- 巻号頁・発行日
- vol.19, no.1, pp.77-81, 2007 (Released:2007-03-23)
- 参考文献数
- 9
The purpose of this study was to investigate the function of Japanese Geta clogs. We measured the foot pressure and the distance between the Geta and the heel. An F-scan and three-dimensional motion analyses were done. Toe pressure increased in the stance phase at toe-off, and we confirmed that heel-Geta contact is present at the beginning of swing phase. The distance between the Geta and the heel increased from heel-off to toe-off and decreased from toe-off to mid-swing. The results suggest that active toe movement occurs during Geta gait, and the use of Geta clogs may contribute to preventing foot disorders and falls. Geta may be useful for foot and toe strengthening.
- 著者
- Masaki Hasegawa Sadaaki Oki Tomoaki Shimada
- 出版者
- The Society of Physical Therapy Science
- 雑誌
- Journal of Physical Therapy Science (ISSN:09155287)
- 巻号頁・発行日
- vol.22, no.1, pp.11-16, 2010 (Released:2010-03-19)
- 参考文献数
- 28
- 被引用文献数
- 5 5
[Purpose] In general, people with bilateral osteoarthritis descend stairs sideways or backwards as compensatory movements. However, to the best of our knowledge, no studies have investigated these movements. The objective of the present study was to ascertain the effects of descending forwards and descending backwards on kinetic changes in the knee joint, to ascertain the optimal stair descending method for minimizing stress on the knee joint. [Subjects] Subjects were 30 adult women with no orthopedic or neurological disorders. [Methods] With step heights (riser heights) of 10, 15, 20 and 25 cm, changes in knee flexion angle, extension moment and joint force were measured when descending forwards and descending backwards using a three dimensional motion analysis system. [Results] Peak knee flexion angle, peak knee extension moment and peak knee joint forces observed in descending stairs backwards were smaller than those in the descending forwards action. [Conclusion] The present results suggest that descending stairs backwards for osteoarthritis patients is effective in protecting the knees, alleviating pain and acquiring compensatory movements.
- 著者
- Masataka Yamamoto Koji Shimatani Masaki Hasegawa Takuya Murata Yuichi Kurita
- 出版者
- The Society of Physical Therapy Science
- 雑誌
- Journal of Physical Therapy Science (ISSN:09155287)
- 巻号頁・発行日
- vol.30, no.8, pp.966-970, 2018 (Released:2018-07-24)
- 参考文献数
- 24
- 被引用文献数
- 7
[Purpose] The purpose of this study was to investigate the effect of changing the plantar flexion resistance of an ankle-foot orthosis on knee joint reaction and knee muscle forces. Furthermore, the influence of an ankle-foot orthosis with an over-plantar flexion resistance function on knee joint reaction force was verified. [Participants and Methods] Ten healthy adult males walked under the following three conditions: (1) no ankle-foot orthosis, and with ankle-foot orthoses with (2) a strong and (3) a weak plantar flexion resistance (ankle-foot orthosis conditions). The knee flexion angle, quadricep muscle force, hamstring muscle force, and knee joint reaction force during the stance phase were measured using a motion analysis system, musculoskeletal model, and ankle-foot orthosis model. [Results] The peak knee joint reaction force, knee flexion angle, and quadricep muscle force in the early stance phase significantly increased in the strong plantar flexion resistance condition in comparison with the “no ankle-foot orthosis” condition. [Conclusion] Increased knee joint reaction force with over-plantar flexion resistance suggests that over-plantar flexion resistance causes various knee problems such as knee pain and knee osteoarthritis.
- 著者
- Kazuhiko Saigo Naomi Kubota Shoko Takebayashi Masaki Hasegawa
- 出版者
- (社)日本化学会
- 雑誌
- Bulletin of the Chemical Society of Japan (ISSN:00092673)
- 巻号頁・発行日
- vol.59, no.3, pp.931-932, 1986 (Released:2006-06-27)
- 参考文献数
- 9
- 被引用文献数
- 61
(±)-1,2-Diphenylethylenediamine (DPEDA) was efficiently resolved by the fractional crystallization of its diastereomeric salts with optically active mandelic acid. 1H-NMR spectrum of N-monoacylated DPEDA with an optically active derivatizing agent showed that DPEDA thus obtained was optically pure.