| Summary: | 碩士 === 國立臺灣師範大學 === 體育學系 === 98 === Purpose: To investigate different sequence of catechins (EGCG) and caffeine (CAF) intake on exercise lipid metabolism and energy expenditure. Methods: By counter-balanced crossover design, twelve health males (age: 24.6 ± 1.3 yrs; height: 175.4 ± 4.5 cm; weight: 72.9 ± 9.6 kg) performed a 30-min treadmill exercise at 65 ± 5 % of heart rate reserve (% HRR) after supplementation of EGCG + CAF, EGCG, CAF, control (CON). Heart rate, oxygen uptake, and blood biochemistry parameters before exercise, during exercise, and post-exercise were compared. Results: During exercise, there were significant lower respiratory exchange ratio at EGCG + CAF (0.82 ± 0.03) than EGCG (0.84 ± 0.03), CAF (0.84 ± 0.02), and CON (0.84 ± 0.03); fat oxidation rate was significant by higher at EGCG + CAF (36.8 ± 7.5 KJ/min) than EGCG (32.4 ± 7.1 KJ/min), CAF (31.7 ± 6.4 KJ/min), and CON (30.9 ± 7.8 KJ/min) ( p < .05). For post-exercise, there were significant higher excess post exercise oxygen consumption at EGCG + CAF (59.49 ± 23.94 ml) than EGCG (46.23 ± 15.62 ml), CAF (44.96 ± 23.28 ml), and CON (41.52 ± 18.72 ml) (p < .05); plasma glycerol was significant by higher at EGCG + CAF (209.93 ± 104.34μmol/l) and CAF (186.78 ± 77.87μmol/l) than CON (134.39 ± 79.13μmol/l) (p < .05). Conclusion: While intake of EGCG + CAF in exercise can enhance lipid metabolism and energy expenditure, CAF is the main ingredient that enhance lipid metabolism during recovery. For those who want to lose weight in addition to have regular exercise, supplements can be used to enhance lipid metabolism and energy expenditure.
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