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Shimomura, Yoshiharu,Nagasaki, Masaru 한국운동영양학회 2002 Journal of exercise nutrition & biochemistry Vol.6 No.2
The metabolism of carbohydrate, fatty acids, and amino acids is greatly affected by acute exercise training. In this review, we summarized the most recevt of the effects of exercise on the metabolism of the substrates used for energy production. We focused mainly on the regulation of glucose transport system, glycolysis, and pyruvate dehydrogenase complex in the glucose metabolism, on the regulation of fatty acid oxidation and the interaction between glucose and fatty acid oxidation in the fatty acid metabolism, on the regulation of branched-chain amino acid catabolism in the amino acid metabolism. The evidence summarizd in this review allows us to understand the molecular mechanisms responsible for the of exercise on the metabolism
Branched-chain amino acids (BCAAs) as nutraceuticals for exercise
( Yoshiharu Shimomura ),( Yasuyuki Kitaura ),( Juichi Sato ) 한국운동영양학회 2011 Physical Activity and Nutrition (Phys Act Nutr) Vol.15 No.3
Branched-chain amino acids (BCAAs: leucine, isoleucine and valine) are essential amino acids for humans and animals. It has been shown that BCAA oxidation is promoted by exercise through activation of branched-chain α-keto acid dehydrogenase complex (BCKDC), which is a rate-limiting enzyme in the catabolic pathway of the BCAAs, and the elevated enzyme activity in skeletal muscle is quickly downregulated after exercise. This tight regulation of the BCKDC is consistent with stimulation of protein synthesis after exercise in skeletal muscle. With this background, it is interesting to consider the BCAAs as a supplement for sports. We conducted a human study to examine the effects of BCAA supplementation on the delayed-onset muscle soreness (DOMS) induced by squatting exercises. The results clearly showed that BCAA supplementation significantly reduced DOMS evaluated by a visual analog scale method and maintained leg muscle force during the period of DOMS. Other studies using different types of exercise support our findings, suggesting that BCAA supplements are useful for conditioning of skeletal muscle after exercise.
( Mio Shimomura ),( Shumpei Fujie ),( Kiyoshi Sanada ),( Hiroki Kajimoto ),( Takafumi Hamaoka ),( Motoyuki Iemitsu ) 한국운동영양학회 2021 Physical Activity and Nutrition (Phys Act Nutr) Vol.25 No.1
[Purpose] Aerobic exercise training (AT) reverses aging-induced deterioration of arterial stiffness via increased arterial nitric oxide (NO) production. Asymmetric dimethylarginine (ADMA), an endogenous inhibitor of NO synthase, was decreased by AT. However, whether AT-induced changes in ADMA levels are related to changes in nitrite/nitrate (NOx) levels remains unclear. Accordingly, we aimed to clarify whether the relationship between plasma ADMA and NOx levels affected the AT-induced reduction of arterial stiffness in middle-aged and older adults. [Methods] Thirty-one healthy middle-aged and older male and female subjects (66.4 ± 1.3 years) were randomly divided into two groups: exercise intervention and sedentary controls. Subjects in the training group completed an 8-week AT (60%-70% peak oxygen uptake [V4O2peak] for 45 min, 3 days/week). [Results] AT significantly increased VO<sub>2peak</sub> (P < 0.05) and decreased carotid β-stiffness (P < 0.01). Moreover, plasma ADMA levels were significantly decreased while plasma NOx levels and NOx/ADMA ratio were significantly increased by AT (P < 0.01). Additionally, no sex differences in AT-induced changes of circulating ADMA and NOx levels, NOx/ADMA ratio, and carotid β-stiffness were observed. Furthermore, the AT-induced increase in circulating ADMA levels was negatively correlated with an increase in circulating NOx levels (r = -0.414, P < 0.05), and the AT-induced increase in NOx/ ADMA ratio was negatively correlated with a decrease in carotid β-stiffness (r = -0.514, P < 0.01). [Conclusion] These results suggest that the increase in circulating NOx with reduction of ADMA elicited by AT is associated with a decrease in arterial stiffness regardless of sex in middle-aged and older adults.
Yasuhiko Shimomura,Oshie Kotake,Hiroyuki Kaga,Noboru Masuda Korean Institute of Landscape Architecture 2004 Journal of the Korean institute of landscape archi Vol.2 No.-
This study aimed at providing suggestions in designing open space so that parks and bordering facilities are well related to each other in terms of the visual access and human activities. The design survey was conducted in the center of Osaka City, using parks there as the study material. The relation between parks and their bordering facilities was evaluated in terms of the visual access and human activities. Through the results of this study, as the design methods for improving relations between parks and their bordering facilities, unified design and creation of square in the boundary area between them, placing access paths to facilities in parks, and planting trees to create Vista, Screen, and Framework landscapes are of great importance.