一种市售植物补充剂对力量、身体成分、功率输出和抗阻训练男性激素谱的影响。
The effects of a commercially available botanical supplement on strength, body composition, power output, and hormonal profiles in resistance-trained males.
机构信息
Human Performance Lab, Department of Exercise and Sport Science, University of Mary Hardin-Baylor, Belton, Texas, 76513, USA.
出版信息
J Int Soc Sports Nutr. 2010 Oct 27;7:34. doi: 10.1186/1550-2783-7-34.
BACKGROUND
Fenugreek (Trigonella foenum-graecum) is a leguminous, annual plant originating in India and North Africa. In recent years Fenugreek has been touted as an ergogenic aid. The purpose of this study was to evaluate the effects of Fenugreek supplementation on strength and body composition.
METHODS
49 Resistance trained men were matched according to body weight and randomly assigned to ingest in a double blind manner capsules containing 500 mg of a placebo (N = 23, 20 ± 1.9 years, 178 ± 6.3 cm, 85 ± 12.7 kg, 17 ± 5.6 %BF) or Fenugreek (N = 26, 21 ± 2.8 years, 178 ± 6 cm, 90 ± 18.2 kg, 19.3 ± 8.4 %BF). Subjects participated in a supervised 4-day per week periodized resistance-training program split into two upper and two lower extremity workouts per week for a total of 8-weeks. At 0, 4, and 8-weeks, subjects underwent hydrodensiometery body composition, 1-RM strength, muscle endurance, and anaerobic capacity testing. Data were analyzed using repeated measures ANOVA and are presented as mean ± SD changes from baseline after 60-days.
RESULTS
No significant differences (p > 0.05) between groups were noted for training volume. Significant group × time interaction effects were observed among groups in changes in body fat (FEN: -2.3 ± 1.4%BF; PL: -0.39 ± 1.6 %BF, p < 0.001), leg press 1-RM (FEN: 84.6 ± 36.2 kg; PL: 48 ± 29.5 kg, p < 0.001), and bench press 1-RM (FEN: 9.1 ± 6.9 kg; PL: 4.3 ± 5.6 kg, p = 0.01). No significant interactions was observed among groups for Wingate power analysis (p = 0.95) or muscular endurance on bench press (p = 0.87) or leg press (p = 0.61). In addition, there were no changes among groups in any clinical safety data including lipid panel, liver function, kidney function, and/or CBC panel (p > 0.05).
CONCLUSION
It is concluded that 500 mg of this proprietary Fenugreek extraction had a significant impact on both upper- and lower-body strength and body composition in comparison to placebo in a double blind controlled trial. These changes were obtained with no clinical side effects.
背景
葫芦巴（Trigonella foenum-graecum）是一种豆科植物，一年生植物，原产于印度和北非。近年来，葫芦巴已被吹捧为一种运动增强剂。本研究的目的是评估葫芦巴补充剂对力量和身体成分的影响。
方法
49 名接受过抗阻训练的男性根据体重进行匹配，并以双盲方式随机分配服用 500 毫克安慰剂（N = 23，20 ± 1.9 岁，178 ± 6.3 厘米，85 ± 12.7 公斤，17 ± 5.6%BF）或葫芦巴（N = 26，21 ± 2.8 岁，178 ± 6 厘米，90 ± 18.2 公斤，19.3 ± 8.4%BF）。受试者参加了为期 8 周的每周 4 天的定期抗阻训练计划，分为两次上肢训练和两次下肢训练。在 0、4 和 8 周时，受试者接受了水下称重身体成分、1-RM 力量、肌肉耐力和无氧能力测试。使用重复测量方差分析对数据进行分析，结果以 60 天后从基线的平均值 ± SD 变化表示。
结果
两组之间的训练量没有显著差异（p > 0.05）。在身体脂肪变化方面，组间存在显著的组×时间交互效应（FEN：-2.3 ± 1.4%BF；PL：-0.39 ± 1.6%BF，p<0.001）、腿推 1-RM（FEN：84.6 ± 36.2 公斤；PL：48 ± 29.5 公斤，p<0.001）和卧推 1-RM（FEN：9.1 ± 6.9 公斤；PL：4.3 ± 5.6 公斤，p=0.01）。在瓦格纳功率分析（p=0.95）或卧推（p=0.87）或腿推（p=0.61）的肌肉耐力方面，组间没有观察到显著的相互作用。此外，在任何临床安全数据（血脂谱、肝功能、肾功能和/或 CBC 谱）中，两组之间均无变化（p>0.05）。
结论
在双盲对照试验中，与安慰剂相比，500 毫克这种专有的葫芦巴提取物对上肢和下肢力量以及身体成分有显著影响。这些变化是在没有临床副作用的情况下获得的。
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