著者

住澤 知之 河井 一明 スミザワ トモユキ カワイ カズアキ Tomoyuki Sumizawa Kazuaki Kawai

雑誌

南九州地域科学研究所所報 = THE BULLETIN OF THE INSTITUTE

巻号頁・発行日

vol.30, pp.1-5, 2014-03-14

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In many previous reports, it has been suggested the daily ingestion of dried-bonito broth (DBB) might improve various symptoms related to fatigue. To (re)confirm these effects of DBB, 24 healthy young female subjects ingested DBB for 40 or 42 days. Measurement of fatigue score on the profile of mood states (POMS) questionnaire, critical flicker-fusion frequency (CFF) and physical fitness using bicycle ergometer were performed before and after the ingestion periods. The urinary amount of 8-hydroxy-2’-deoxyguanosine (8-OH-dG) and creatinine were also measured before and after exercise stress using bicycle ergometer. Although the analysis for fatigue score on the available POMS data didn’t significantly decreased, 7 subjects with high fatigue score (more than 20 points) before the ingestion periods revealed the significant improvement of the score. Also significant increase of CFF showed the recovery from the mental fatigue by DBB ingestion. On the other hand, since the results for measurement of physical fitness and urinary 8-OH-dG level corrected with creatinine amount didn’t change significantly, we couldn’t observe the anti-fatigue effect against physical fatigue in this study. All things considered, our results suggested that the daily ingestion of DBB might show the tendency for the improvement against at least some type of fatigue.