槲皮素 Quercetin × 耐力
The totality of evidence shows that quercetin produces a statistically detectable but practically negligible effect on endurance and aerobic performance.
The totality of evidence shows that quercetin produces a statistically detectable but practically negligible effect on endurance and aerobic performance. Two high-quality meta-analyses (PMID 21606866, ES=0.15; PMID 22805526, VO2max +1.94%, endurance performance +0.74%) both explicitly classify the magnitude as trivial and conclude quercetin is unlikely to be ergogenic, including for trained athletes. The only positive RCTs were small (n=12) and conducted in untrained participants, and a 6-week double-blind RCT in trained endurance runners (PMID 24379709) found zero performance benefit despite improved antioxidant markers. NIH ODS and NCCIH state there is no clear evidence of athletic performance improvement, and both ACSM (Q4 2025 review) and ISSN (2026 position stand) decline to endorse quercetin as an effective ergogenic aid. A grade of D is warranted because the effect, while not zero, is too small to be practically meaningful and authoritative bodies consistently do not recommend it.
評分透明度
所有分數由 7 層證據引擎計算，過程公開可查▸查看完整決策路徑（audit trail）
- compute_raw_score — 加權公式: L2×0.30 + L3×0.25 + L5×0.25 + L11×0.10 + L1×0.10 = 0.302
- tier_from_score — 依分數區間映射至 tier letter
- apply_hec_rules — 高品質 SR/MA 顯示 positive (3 篇 > 0 negative)
- tier_strict_requirement_check — Tier 條件達標，未降階
- detect_disputes — 偵測到 0 個 hard + 0 個 soft dispute
- decide_status — 依 tier + dispute 結果決定 status
台灣社群（PTT/Dcard/Mobile01/FB社團/痞客邦）幾乎沒有針對『槲皮素用於耐力／運動表現』的真實使用討論。PTT 健身相關看板（MuscleBeach、FITNESS、補劑挑選文）的補給品心得串完全未出現槲皮素，鄉民談耐力／續航主要聚焦在咖啡因、beta-alanine、甜菜根汁、肌酸與 pre-workout，槲皮素不在討論範圍內。社群中真正提及槲皮素的討論幾乎全集中在『抗過敏／過敏性鼻炎／免疫』情境（allergy 板、WomenTalk 過敏串、e-shopping 酵素串），與耐力無關。少數將槲皮素連結到『運動後抗氧化／降低高強度運動發炎／提升續航』的內容，幾乎全來自商業健康媒體與保健品業配（vitabox、營養新知 formulawave、Naturecan、悠活原力等部落格與電商），正是 L10c 設計上要排除的 L10d 污染來源，而非鄉民親身耐力實測。註：研究面（含台灣外之 meta-analysis）亦顯示槲皮素對有氧耐力與 VO2max 無顯著效益，社群冷感與此一致。針對本 condition 屬社群冷門、討論稀缺，依規範回傳空結果，未杜撰鄉民討論。
無共識（台灣社群幾乎無針對耐力／運動表現的槲皮素真實使用心得；健身板補劑串未提及，零星相關內容均為商業媒體／保健品業配，非鄉民親身經驗）
- 規律有氧／耐力訓練
- 訓練週期化與漸進負荷
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