Effect of guarana intake on exercise lipid metabolism and antioxidant capacity in overweight males
| Autor: | Yu-Jia Liu, 劉又嘉 |
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| Rok vydání: | 2013 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 101 Guarana has been added as an ingredient to herbal health food in recent years. Previous literature often combine guarana with other herbs for research. However, there was little discussion on the dosage effects of pure guarana on human body. Purpose: To investigate whether single exercise with different dosage of pure guarana supplement would increase the lipid metabolism and decrease oxidant stress on overweight males. Methods: Using a counter-balanced crossover design, twelve overweight males performed a 30-min treadmill exercise at 75% of heart rate reserve after supplementation of guarana 1000 mg (guarana low, GL)、2000 mg (guarana high, GH) and placebo (control, C). Blood biochemistry parameters for lipid metabolism and antioxidant capacity were analyzed before exercise (Pre), immediate post-exercise (IP), 30 minute post-exercise (P30), 60 minute post-exercise (P60) and 24 hour post-exercise (P24H) were compared. The α level was set at .05. Results: 1. Glycerol concentration: Values at IP, GH was significantly higher than GL and C. At P30, GL and GH were significantly higher than C (ρ < .05). 2. Lipase activity: At IP, GH was significantly higher than C. At P30, GL and GH were significantly higher than C (ρ < .05). 3. TBARS: At P30, GH was significantly lower than C. At P60, GH was significantly lower than GL and C. At P24H, GH and GL were significantly lower than C (ρ < .05). 4. SOD: In C, IP was significantly higher than P60 and P24H (ρ < .05). 5. CAT: In GH, IP and P24H significantly higher than Pre. In C, P60 was significantly higher than P24H (ρ < .05). Conclusions: Pure guarana supplement can increase human fat metabolism after exercise. There were no adverse reactions with high dosage of 2000 mg guarana in human trials. Guarana has a positive effect for overweight people. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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