著者

Koh Sasaki Mitsuyuki Nakayama Kensuke Iwabuch Takumi Yamamoto Ichiro Watanabe Hironobu Shimozono Jun Murakami Takashi Katsuta Ichiro Kono

出版者

SANKEI DIGITAL Inc.

雑誌

Journal of Digital Life (ISSN:24366293)

巻号頁・発行日

vol.2, pp.2022.2.5, 2022 (Released:2022-03-31)

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The aim of this study was to clarify the attack-defence performances of rugby sevens in 2010-2020 seasons, 4,074 matches. Firstly, averaged try scoring rate and try conceding rate of every teams were drawn in two-dimensions space. Hypothesis 1 was that the achievement values of the upper teams could be clarified. Receiver-Operator-Curve analysis was used to understand how attack-defence indicators correctly diagnose the world rankings. Secondly, the 22m entry attack-defence indicators were drawn in two-dimensional space. Clustering analysis of ranking teams was executed using try scoring rate, try conceding rate, 22m attack-defence indicators. Hypothesis 2 was that the clustering characteristics of upper teams can be clarified by these indexes. Thirdly, network analysis was executed to clarify what kind of characteristic in relationship among the ranking, team performance, and individual performance. The ROC analysis showed the specific achievement level of the top-ranking teams with high accuracy (hypothesis 1). Cluster analysis extracted 4 groups. The gradual attack defence standard values were obtained (hypothesis 2). Network analysis showed the relationship structure among the ranking, the team performance, and the individual performance with some interesting results concerned the dependence tendency changing on the ranking stage (hypothesis 3).

著者

Masao HAYASHI Takao AKAMA Ichiro KONO Heihachiro KASHIWAGI

出版者

The Japanese Biochemical Society

雑誌

The Journal of Biochemistry (ISSN:0021924X)

巻号頁・発行日

vol.98, no.4, pp.1135-1138, 1985-10-01 (Released:2008-11-18)

参考文献数

11

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Vitronectin (serum spreading factor), a cell-adhesive glycoprotein present in mammalian serum, has previously been the subject of conflicting reports concerning its binding to heparin. Vitronectin purified from human plasma does not bind to heparin under physiological conditions, but it does so after treatment with denaturing agents including 8M urea or 6M guanidine-HCl, or heating at 100°C for 5min. These treatments seem to expose a heparin-binding site in vitronectin; this finding thus resolves the conflicts concerning this function.

著者

Takeshi Otsuki Kazuhiro Shimizu Motoyuki Iemitsu Ichiro Kono

出版者

日本酸化ストレス学会

雑誌

Journal of Clinical Biochemistry and Nutrition (ISSN:09120009)

巻号頁・発行日

vol.53, no.3, pp.166-169, 2013 (Released:2013-10-31)

参考文献数

31

被引用文献数

5 17

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Chlorella, a unicellular green alga, contains various antioxidants and other nutrients such as amino acids and fiber. Previous studies have reported that supplementation with multiple antioxidants reduces arterial stiffness, a well-established cardiovascular risk factor. We investigated the effects of Chlorella intake on arterial stiffness using a single-blinded, placebo-controlled crossover study design. Fourteen young men took placebo or Chlorella tablets for four weeks, with a 12-week washout period between trials, in a randomized order. Before and after each trial, blood pressure, heart rate, and brachial-ankle pulse wave velocity, an index of arterial stiffness, were measured. Treatment compliance was comparable between the two groups. There were no differences in blood pressure and heart rate before and after supplementation in both the placebo and Chlorella groups. Brachial-ankle pulse wave velocity decreased after Chlorella intake (before vs after intake; 11.6 ± 0.2 vs 11.1 ± 0.1 m/s, p = 0.01), but not after placebo intake (11.4 ± 0.2 vs 11.4 ± 0.2 m/s, p = 0.98). Multicomponent analysis of the Chlorella-containing tablet detected nutrients that can reduce arterial stiffness, such as antioxidant vitamins, arginine, potassium, calcium, and n-3 unsaturated fatty acids. These results suggest that intake of a Chlorella-containing multicomponent supplement can decrease arterial stiffness.