- 著者
- Natsuki TSUJITA Yasunori AKAMATSU Márcio Makoto NISHIDA Tatsuya HAYASHI Toshio MORITANI
- 出版者
- Center for Academic Publications Japan
- 雑誌
- Journal of Nutritional Science and Vitaminology (ISSN:03014800)
- 巻号頁・発行日
- vol.65, no.6, pp.507-514, 2019-12-31 (Released:2019-12-31)
- 参考文献数
- 51
- 被引用文献数
- 13
Tryptophan (TRP), a precursor of serotonin is believed to have an antidepressant effect. The pathway for brain uptake of TRP is shared by other large neutral amino acids; therefore, the best time to take TRP may be between meals. No previous study has, however, designated the time of TRP dosing to improve mood. Further, the effects of TRP on autonomic nervous system (ANS) activity are unclear. This study investigated the effects of TRP, vitamin B6, and nicotinamide-containing supplements loading between meals on mood and ANS activity in depressive young adults. Thirty depressive young adults were randomly allocated to receive TRP, vitamin B6, and nicotinamide-containing supplements or a placebo supplements twice daily between meals for 7 d. Mood was measured using the Center for Epidemiologic Studies Depression Scale (CES-D) and the Profile of Mood States (POMS). ANS activities were analyzed by heart rate variability power spectral analysis. Blood samples were assayed for plasma total TRP concentration. For analysis, TRP and placebo groups were further classified into two subgroups according to CES-D score (mild to moderate vs. severe depressive symptoms). The CES-D score significantly improved following both treatments in the severe depression subgroups, while the POMS depression score was significantly improved only in the TRP severe depression subgroup. There was no significant change in ANS activity or plasma total TRP in any group. TRP, vitamin B6, and nicotinamide-containing supplements loading between meals can quickly improve depressed mood in quite low dose in young adults with severe subclinical depression.
- 著者
- Marco Carlos Uchida Márcio Makoto Nishida Ricardo Aurélio Carvalho Sampaio Toshio Moritani Hidenori Arai
- 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.28, no.4, pp.1266-1271, 2016 (Released:2016-04-28)
- 参考文献数
- 11
- 被引用文献数
- 8 47
[Purpose] The aim of this technical note was to report significant differences in the tension forces of the different-sized Thera-band® elastic bands (Hygenic Corp.) determined by us versus the manufacturer. [Subjects] Two trained observers performed all measurements. [Methods] The tension force (kilogram-force units) of eight color-coded elastic bands (tan, yellow, red, green, blue, black, silver, and gold) with different resistance levels was measured at 10 different percentages of elongation (25% to 250% with 25% increments) using an electronic elongation gauge tensiometer. [Results] There were significant differences in the tension force of the elastic bands of different colors when compared in pairs (excepting the tan/yellow pair) at 100% and 200% elongation, as determined via one-way analysis of variance. There were no differences in the slopes for the tan versus yellow and green versus blue bands, as determined via linear regression analysis and one-way analysis of variance. Comparison of the tension force values obtained in our study with the reference values of the manufacturer (the t-test applied to the slopes) showed significant differences for five colors (yellow, green, blue, silver, and gold). [Conclusion] Our results indicate that the tension force values for Thera-Band elastic bands provided by the manufacturer are overestimates.