- 著者
- Tomohiro Sugino Sayaka Aoyagi Tomoko Shirai Yoshitaka Kajimoto Osami Kajimoto
- 出版者
- SOCIETY FOR FREE RADICAL RESEARCH JAPAN
- 雑誌
- Journal of Clinical Biochemistry and Nutrition (ISSN:09120009)
- 巻号頁・発行日
- vol.41, no.3, pp.224-230, 2007 (Released:2007-10-30)
- 参考文献数
- 21
- 被引用文献数
- 17 24
We examined the effects of citric acid and L-carnitine administration on physical fatigue. In a double-blind, placebo-controlled, 3-way crossover study, 18 healthy volunteers were randomized to oral citric acid (2,700 mg/day), L-carnitine (1,000 mg/day), or placebo for 8 days. The fatigue-inducing physical task consisted of workload trials on a cycle ergometer at fixed workloads for 2 h on 2 occasions. Before the physical load, salivary chromogranin A, measured as a physiological stress marker, was lower in the group given citric acid than in the group given placebo. Also, after the physical load, the subjective feeling of fatigue assessed with a visual analogue scale was lower in the citric acid group than in the placebo group. In contrast, L-carnitine had no effect on chromogranin A or subjective fatigue. These results suggest that citric acid reduces physiological stress and attenuates physical fatigue, whereas L-carnitine does not.
- 著者
- Taichi Ishizaki Maki Wakabayashi Hiroyuki Tanimoto Atsuhito Shima Mitsuharu Yabune Osami Kajimoto Hiroshige Itakura
- 出版者
- SOCIETY FOR FREE RADICAL RESEARCH JAPAN
- 雑誌
- Journal of Clinical Biochemistry and Nutrition (ISSN:09120009)
- 巻号頁・発行日
- vol.33, no.3, pp.75-82, 2003 (Released:2010-07-01)
- 参考文献数
- 9
- 被引用文献数
- 11 10
In a placebo-controlled double-blind study, we examined the effects on blood lipids during long-term consumption of mayonnaise containing phytosterolester in Japanese with borderline or mild hyperlipidemia. We also examined the safety of this mayonnaise. Fifty-five subjects were divided into 2 groups, one group of which was given for 3 months 15g/day of a placebo mayonnaise (Placebo), and the other, 15g/day of mayonnaise containing 884mg/day of phytosterolester (MSE) for the same period of time. Hematological testing and confirmation of objective and subjective symptoms were conducted every month. Total cholesterol and LDL cholesterol levels did not change in the Placebo group throughout the study, but they did significantly decrease 1, 2, and 3 months after the start of intake in the MSE group. Significant differences were seen between Placebo group and MSE group in the amount of changes in total cholesterol 1, 2, and 3 months after the start of intake, and in LDL cholesterol 1 and 2 months after the start of intake. Furthermore, the results of hematological testing other than for blood lipids and physician interview revealed no adverse events caused by long-term consumption of the test foods. We thus concluded mayonnaise containing phytosterolester to be safe and to lower total serum cholesterol and LDL cholesterol levels.