Lactate threshold乳酸阈值

Place · Level 3

产生 > 清除的拐点 · 不是废物堆积 · Brooks 1986 shuttle 理论 · 阈值训练 = 真的能涨耐力

Lactate is fuel

Stop 1/4

乳酸是燃料, 不是废物

The pre-1980s model equated lactate with hypoxia + fatigue + waste. That model was falsified 40 years ago, but it still circulates in gym class and weight rooms.

Brooks 1986 lactate shuttle theory (Cell Metabolism 2018 review):

Fast-twitch fibers (type II) rely on glycolysis during training, producing large amounts of lactateLactate enters the blood, where the heart, slow-twitch fibers, brain, and liver actively take it upThese tissues use lactate as an energy substrate preferred over glucose (the heart gets ~60% of its vigorous-exercise energy from lactate)Lactate is also the raw material for hepatic gluconeogenesis, forming the Cori cycle
So rising blood lactate during training isn't a disaster — it's a sign of normal aerobic + anaerobic system teamwork. The training goal isn't 'producing no lactate' but improving lactate clearance capacity and raising the threshold.

Read story Open mechanism

本站提供科普与一般性建议，不替代医师诊断或处方；有症状或正在服药请咨询合格医师。 Educational content, not medical advice — consult a clinician for diagnosis or treatment.

Back

Lactate threshold乳酸阈值

Place · Level 3

产生 > 清除的拐点 · 不是废物堆积 · Brooks 1986 shuttle 理论 · 阈值训练 = 真的能涨耐力

Lactate is fuel

Stop 1/4

乳酸是燃料, 不是废物

The pre-1980s model equated lactate with hypoxia + fatigue + waste. That model was falsified 40 years ago, but it still circulates in gym class and weight rooms.

Brooks 1986 lactate shuttle theory (Cell Metabolism 2018 review):

Fast-twitch fibers (type II) rely on glycolysis during training, producing large amounts of lactateLactate enters the blood, where the heart, slow-twitch fibers, brain, and liver actively take it upThese tissues use lactate as an energy substrate preferred over glucose (the heart gets ~60% of its vigorous-exercise energy from lactate)Lactate is also the raw material for hepatic gluconeogenesis, forming the Cori cycle
So rising blood lactate during training isn't a disaster — it's a sign of normal aerobic + anaerobic system teamwork. The training goal isn't 'producing no lactate' but improving lactate clearance capacity and raising the threshold.

Read story Open mechanism

本站提供科普与一般性建议，不替代医师诊断或处方；有症状或正在服药请咨询合格医师。 Educational content, not medical advice — consult a clinician for diagnosis or treatment.