Heart-rate training zones · endurance 心率訓練區間 · 耐力運動
Three anchoring methods, one true bpm scale, and the error bars nobody else shows you. Enter what you have actually measured — the page uses the strongest anchor your data supports. 三種錨定方法、一條真實 bpm 刻度，以及其他計算機不會告訴你的誤差範圍。輸入你實際量度過的數字，本頁會自動採用你的數據所能支持的最強錨值。
→ Read the methodology 閱讀方法學詳解Same athlete, same day, three legitimate textbook methods. If the spread below is larger than a few bpm, that is your honest answer about how precisely zone boundaries can be known at all. 同一個人、同一天、三種同樣站得住腳的教科書方法。如果下面的差距大於幾 bpm，那就是「zone 界線究竟能有多精確」的誠實答案。
Before you test, and before you trust these numbers. Beta-blockers and other rate-controlling medication invalidate every equation here. Maximal exercise testing carries real, if small, cardiac risk — get medical clearance first if you have any cardiac history, chest pain, uncontrolled hypertension, or have been sedentary and are over roughly 40. This is a training tool, not medical advice.
在測試之前，以及在相信這些數字之前。β-受體阻斷劑及其他控制心率的藥物會令本頁所有公式失效。最大運動測試帶有真實（雖然不大）的心臟風險 — 若你有任何心臟病史、胸痛、未受控制的高血壓，或長期缺乏運動而年齡約在 40 歲以上，請先取得醫生許可。這是訓練工具，並非醫療建議。
→ Full methodology, field-test protocols and limits 完整方法學、實地測試流程與限制