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Wide landscape editorial photograph of a minimalist wooden table in soft morning light. At the center, a small ceramic dish holds a modest pile of pale golden ashwagandha root powder, with a few dried gnarled ashwagandha roots and a sprig of green leaves with tiny orange-red berries lying beside it. A single tiny capsule sits split open next to the dish, with a delicate dusting of powder spilling out, hinting at a very small dose. In the softly blurred background on the right, a pair of clean running shoes and a folded sage-green towel rest on a pale linen surface, suggesting endurance training and fitness without any people in frame. A small brass measuring spoon and a glass of water with subtle condensation add quiet detail on the left. The palette is warm and earthy: oat beige, muted sage green, terracotta, soft cream, and touches of burnt orange from the berries. Lighting is natural, diffused window light from the left, casting long gentle shadows and a subtle glow across the powder grains. Shallow depth of field with crisp focus on the powder and roots, creamy bokeh behind. Composition uses generous negative space on the right third for headline overlay, with a clean, calm, contemporary wellness-magazine aesthetic. Shot as if on a 50mm lens, fine film grain, matte finish, high-end editorial styling, tactile textures of ceramic, wood, and linen, with a restrained, thoughtful mood that hints at caution and careful consideration.
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每日30毫克阿育吠陀（Ashwagandha）在8周内提升 VO2max——深度解读

Jake the Titan · · 1 min read

引言：30 毫克能做到常规十到二十倍剂量的事吗？

阿育吠陀（Ashwagandha）补剂通常以几百毫克计量。近日《Phytotherapy Research》上发表了一项随机、双盲、安慰剂对照试验（Prajapati 等），仅测试了 每日 30 毫克 的剂量。摘要显示，这一剂量在 8 周 内即可显著提升受试者的 VO2max，相较于安慰剂有明显差异。

在你重新整理补剂架之前，先看看这项研究的具体报告、未提及的细节以及适用人群。

测试对象：不是普通的阿育吠陀

本研究使用的并非普通根粉，而是一种低剂量阿育吠陀（LDA）提取物，商标名称为 Ashwa.30。文中将其描述为“生物活性优化的根部提取物”，并对关键成分进行标准化：

  • Withanolides：>15% w/w
  • “ATP 活性组分”：>15% w/w

这点至关重要。30 毫克的实验结果只适用于这款特定的标准化提取物，不能直接套用到标有“ashwagandha”的任何瓶子上。若使用标准化不足的产品，即便剂量相同，效果也可能截然不同。

研究设计

  • 研究类型：为期 8 周、随机、双盲、安慰剂对照临床试验。
  • 受试者：健康成年志愿者。
  • 干预：每日服用 30 毫克 LDA 或安慰剂。

主要终点：VO2max，采用改良 Bruce 协议跑步机测试（MBPTT）间接估算。

次要终点：血乳酸、肌酸激酶（CPK）、感知用力等级（RPE）、视觉模拟疲劳评分（VAS）以及安全性生物标志物。

需要说明的是，VO2max 是通过跑步机协议估算得出的，而非气体交换分析的直接测量。此类间接方法在实际操作中常见，但精确度不如实验室级别的直接测量。

结果摘要（论文中的表述）

  • VO2max：LDA 组的 VO2max 和最大心率均显著提升，相较于安慰剂。原文未给出具体数值，完整论文才会提供效应量、置信区间等细节。
  • 疲劳感：Borg RPE 与疲劳评分在 LDA 组都有所改善，作者认为补剂“延缓了疲劳的出现”。
  • 血乳酸：运动时处理组的血乳酸水平更低，解释为“有助于延长有氧代谢”。
  • CPK：血清肌酸激酶水平显著下降，被视为“减轻了肌肉能量压力”。CPK 常被用作肌肉损伤的指标，但摘要并未说明这是否转化为更好的恢复或更少的受伤，仅能视作生物标志物的变化。

安全性（摘要报告）

LDA 的耐受性良好，未出现与治疗相关的不良事件。血液、肝、肾、代谢及生命体征指标均维持在正常临床范围。这对健康成人在八周内使用是个正面信号，但仍需注意实验时间较短且人群局限于健康者。

实践要点

  • 剂量：每日 30 毫克的特定标准化提取物。研究未评估其他剂量，故无法判断 30 毫克是否优于常见的 300‑600 毫克。

  • 使用时长：8 周；不应期待一次训练就见效。

  • 服用时间：摘要未说明具体服用时段，需查阅全文获取细节。

  • 适用人群：旨在提升心肺耐力、降低运动疲劳的健康成人。作者将其描述为一种“安全且有效的低剂量耐力提升助剂”。

    • 有慢性疾病或正在服药者：本试验只招募健康成人，结果不适用于孕妇、甲状腺、肝脏或自身免疫疾病患者，以及正在使用处方药的人群，使用前请咨询医生。
    • 期望快速、大幅提升者：由于摘要未给出效应大小，“显著”仅指统计学意义，未必等同于显著的实际提升。
    • 购买了其他品牌的阿育吠陀：结论仅针对本研究使用的特定提取物，其他品牌或配方不能直接套用。

行业关联与注意事项

摘要未披露资助来源或潜在利益冲突。该提取物为 Ashwa.30 的专利产品，补剂试验往往与生产商关联，需要查阅全文的利益冲突声明，以判断是否存在偏倚。其他限制包括：

  • 仅有一项试验，且摘要未列出样本量。
  • VO2max 为间接估算。
  • 实验仅在健康成人中进行 8 周，无法推断长期使用或对顶级运动员的影响。
  • 未与更高剂量的阿育吠陀进行头对头比较。

结论

每日 30 毫克、标准化、仅根部提取的阿育吠陀在 8 周 内相较于安慰剂提升了估算的 VO2max，并改善了疲劳相关指标，且未出现与治疗相关的不良事件。对那些认为“剂量越大效果越好”的人来说，这是一个值得关注的发现。但仍需更多独立重复实验、完整数据披露以及长期安全性评估，才能确认其是否真正是“游戏改变者”。

来源：Prajapati 等《Efficacy and Safety of Low‑Dose Ashwagandha Supplementation on Exercise Endurance: A Randomized, Placebo‑Controlled, Double‑Blind, Clinical Trial》，Phytotherapy Research，DOI: 10.1002/ptr.70178。PubMed: https://pubmed.ncbi.nlm.nih.gov/41846233/

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.

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Jake the Titan

Jake the Titan writes for Dr. Gymbro: science-backed fitness, nutrition & performance.

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