School of Nutrition and Health Sciences, Taipei Medical University, Taipei, Taiwan.
J Med Food. 2011 Mar;14(3):219-25. doi: 10.1089/jmf.2010.1096.
The purpose of this study was to investigate the effects of a proprietary blend of soybean peptides, taurine, Pueraria isoflavone, and ginseng saponin complex (STPG capsule) on exercise performance in humans. Fourteen male volunteers were randomly assigned to two crossover treatments in which they consumed either four STPG capsules (STPG treatment) or placebo (P treatment) for 15 days before a 75% maximal oxygen uptake (VO(2max)) exhaustive cycling test. Blood samples and respiratory gas were collected prior to the exercise (Pre-Ex), at 10 (Ex-10), 15 (Ex-15), 20 (Ex-20), and 25 (Ex-25) minutes during exercise, and immediately after exercise (exhaustion) to assess the blood metabolites, cardiorespiratory responses, and energy substrate utilization. The result showed that exercise time to exhaustion of the 75% (VO(2max)) exhaustive cycling test of the STPG-treated subjects was significantly greater than with the P treatment (30.99 ± 2.01 vs. 28.05 ± 1.48 minutes). The plasma lactate concentrations at Ex-20 and Ex-25 in the STPG treatment were significantly lower with STPG treatment than with P treatment (10.5 ± 0.7 vs. 11.5 ± 0.8 and 10.7 ± 0.9 vs.12.3 ± 1.0 mmol/L, respectively). Nonesterified fatty acid levels at Ex-15, Ex-20, Ex-25, and exhaustion in the STPG group (0.27 ± 0.03, 0.32 ± 0.04, 0.32 ± 0.06, and 0.37 ± 0.05 mmol/L, respectively) were significantly higher than those in the P treatment (0.21 ± 0.03, 0.23 ± 0.03, 0.24 ± 0.03, and 0.25 ± 0.03 mmol/L, respectively). It was concluded that supplementation of four capsules (2 g) of STPG complex, consisting of soybean peptides, taurine, Pueraria isoflavone, and ginseng saponin, for 15 days was effective in promoting utilization of free fatty acids and improving exhaustive cycling test performance in humans.
本研究旨在探讨一种大豆肽、牛磺酸、葛根异黄酮和人参皂甙复合物（STPG 胶囊）对人体运动表现的影响。14 名男性志愿者被随机分为两组，交叉接受 15 天的 4 粒 STPG 胶囊（STPG 治疗）或安慰剂（P 治疗）治疗，然后进行 75%最大摄氧量（VO(2max)）的耗竭性踏车测试。在运动前（Pre-Ex）、运动 10 分钟（Ex-10）、15 分钟（Ex-15）、20 分钟（Ex-20）和 25 分钟（Ex-25）以及运动后立即（衰竭）采集血样和呼吸气体，以评估血液代谢物、心肺反应和能量底物利用情况。结果显示，STPG 治疗组的 75%（VO(2max)）耗竭性踏车测试的运动时间明显长于 P 治疗组（30.99 ± 2.01 分钟比 28.05 ± 1.48 分钟）。STPG 治疗组在 Ex-20 和 Ex-25 时的血浆乳酸浓度明显低于 P 治疗组（10.5 ± 0.7 毫摩尔/升比 11.5 ± 0.8 毫摩尔/升和 10.7 ± 0.9 毫摩尔/升比 12.3 ± 1.0 毫摩尔/升）。STPG 组在 Ex-15、Ex-20、Ex-25 和衰竭时的非酯化脂肪酸水平（0.27 ± 0.03、0.32 ± 0.04、0.32 ± 0.06 和 0.37 ± 0.05 毫摩尔/升）明显高于 P 治疗组（0.21 ± 0.03、0.23 ± 0.03、0.24 ± 0.03 和 0.25 ± 0.03 毫摩尔/升）。研究结论为，连续 15 天补充包含大豆肽、牛磺酸、葛根异黄酮和人参皂甙的 4 粒（2 克）STPG 复合物能有效促进游离脂肪酸的利用，提高人体的耗竭性踏车测试表现。
