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Science & Research

Turkesterone 对男性 IGF-1 的首次测试:结果未达网红承诺

Coach Ryan · · 1 min read

研究一语概括

贝勒大学牵头的一个小团队让 11 名健康的年轻男性服用 Turkesterone,未发现其对 IGF-1、静息代谢率(RMR)或脂肪、碳水化合物代谢有统计学显著影响。虽然各项数值略微朝着补剂营销者希望的方向倾斜,但均未达到显著水平。

Turkesterone 是一种来源于植物的蜕皮激素,社交媒体常把它宣传为拥有“天然类固醇”效果、能增肌且没有合成雄激素类固醇(AAS)的副作用。它在市面上被广泛使用,却几乎没有可靠的人体数据支撑。本文发表于 2024 年的 Muscles 期刊,是首次在真实人群中验证这种热度的研究之一。

研究实际做了什么

这是一项安慰剂对照的初步探索研究。共有 11 名健康的年轻男性(平均年龄 23.3 ± 2.2 岁)自愿参加。受试者在不同时间点分别服用多剂量的 Turkesterone,另一组服用安慰剂作对照。研究者在三个时间点采血:

  • 服用前(基线)
  • 服用后 3 小时
  • 服用后 24 小时

主要观察指标为血清 IGF-1(与肌肉蛋白合成及生长信号密切相关)以及静息代谢率(RMR),后者用于检验 Turkesterone 是否能提升产热作用。脂质和碳水化合物代谢标志物也同步记录。摘要未披露具体剂量,本文亦不作补充说明。

核心结果:无显著变化

统计分析显示 在血清 IGF-1、RMR、脂质代谢及碳水代谢方面均未出现显著的主效应、时间效应或交互效应(全部 p > 0.05)。通俗来说,研究者无法将 Turkesterone 的作用与安慰剂或自然波动区分开来。

这就是研究的主要结论,其他细节均属于次要信息。

那些被引用的“趋势”

作者提到两处虽未达显著水平的趋势:

  1. IGF-1 在 Turkesterone 处理下呈上升趋势,并相对安慰剂保持较高水平;
  2. RMR 在服用后 3 小时的测量中始终高于基线。

需要强调的是,非显著的趋势并不等同于真实的正向效果。样本只有 11 例,统计功效有限,可能只能捕捉到较大的真实效应,也可能仅是随机噪声。该设计无法区分二者,作者也明确指出数据“未能充分支持 Turkesterone 是一种强效合成代谢补剂”。

为什么这项研究不足以定论

如果你想据此做决定,需要注意以下局限性:

  • 样本量极小。 仅 11 名年轻健康男性,难以推及女性、老年人或经系统训练的运动员。
  • 仅是急性给药。 研究关注的是数小时甚至一天的效应,而非数周甚至数月的长期补充。
  • 指标间接。 IGF-1 只是一个代理变量,研究未测量肌肉体积、力量或实际的肌肉蛋白合成,因而不能直接得出增肌结论。
  • 缺乏训练因素。 真实的肌肉增长依赖阻力训练、充足蛋白质摄入以及时间,这些在实验中都未被考虑。

作者呼吁后续研究在长期、多次训练的情境下,评估 Turkesterone 对 IGF-1 及整体肌肉增长的影响。

好消息:耐受性良好

研究者指出,在短时间内、所用剂量下,Turkesterone 在血流动力学和胃肠道耐受性方面表现良好——未出现显著的心血管或胃部不适。这属于 11 人短期安全信号,但并不等同于长期安全性验证。

对你的意义

  • 它能增肌吗? 目前没有证据。该研究未测量肌肉增长,激素和代谢指标也未出现显著差异。

  • 剂量:尚无基于证据的增肌剂量。摘要未披露使用剂量,本文亦未能验证任何商品标签或网红的使用方案。

  • 使用时机:测量点为服用后 3 小时和 24 小时,因而无法为“训练前”或“随餐服用”等策略提供依据。

  • 适合人群:对效果持保留态度、愿意等待更可靠数据的健康成人。此时的开支不应取代以下基本要素:循序递进的阻力训练、充足的蛋白质摄入、良好的睡眠以及足够的总体热量摄入。

    • 任何期待类固醇般效果的人都不应抱有幻想;本研究未支持此类比较。
    • 有激素敏感疾病、正在服药但未咨询医生的人应避免使用。
    • 孕妇、哺乳期女性以及未满 18 岁的青少年亦不宜。
    • 受药检限制的竞技运动员需先确认所在组织的规章以及产品成分。

结论

首批关于 Turkesterone 与 IGF-1 的人体数据并未显示显著效应,仅呈现出在样本过小、观察窗口过短的情况下可能存在的趋势。除非有更长周期、直接测量肌肉增长的临床试验,否则应将 Turkesterone 视为一个未被证实的补剂,而非天然的、可以替代类固醇的增肌捷径。

Original study

Read the original research on pubmed.ncbi.nlm.nih.gov →

This article summarizes published research for general information. It is not medical advice.

CR

Written by

Coach Ryan

Coach Ryan writes for Dr. Gymbro: science-backed fitness, nutrition & performance.

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