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TDEE & Calorie Calculator

Calculate your Total Daily Energy Expenditure using the Mifflin-St Jeor equation — the most validated formula for estimating metabolic needs.

深入了解您的每日总能量消耗 (TDEE)

每日总能量消耗 (TDEE) 是指您的身体在 24 小时内消耗的总热量。它由基础代谢率 (BMR) —— 即维持生命所需的静息能量 —— 以及食物热效应 (TEF)、非运动性热量消耗 (NEAT) 和运动热量消耗 (EAT) 共同组成。无论您的目标是减脂、增肌还是维持体重,理解 TDEE 都是制定任何营养策略的基石。

Key Facts

  • 即使在完全静止的状态下,BMR 仍占每日总热量消耗的 60-70%
  • NEAT(如小动作、站立、走动)在个体间的差异可达 500-2000 大卡
  • 静息状态下,肌肉组织每天每磅消耗约 6 大卡,而脂肪组织仅为约 2 大卡
  • 在长期热量限制期间,代谢适应会导致 TDEE 下降 15-25%
  • 蛋白质的热效应为 20-30%,而碳水化合物为 5-10%,脂肪仅为 0-3%
  • 若不进行干预,30 岁后的 TDEE 约每十年下降 2-3%

为什么 TDEE 计算结果是估算值而非精准处方

各种 TDEE 计算公式(如 Mifflin-St Jeor、Harris-Benedict、Katch-McArdle)是基于人群平均数据得出的估算值。由于激素水平(甲状腺、皮质醇、胰岛素敏感性)、肠道微生物群组成(影响食物热量的吸收效率)、遗传代谢差异以及适应性产热等因素的不同,个体间存在 ±15% 的误差属于正常现象。最科学的方法是将公式计算结果作为起点,通过 2-3 周的实际体重变化与热量摄入对比,再进行动态调整。

Frequently Asked Questions

哪种 TDEE 计算公式最准确? +

对于大多数成年人而言,Mifflin-St Jeor 公式被认为最为准确(误差在 10% 以内)。如果您了解自己的体脂率,Katch-McArdle 公式可能会更精准,因为它直接考虑了瘦体重。

我应该摄入多少热量才能在减脂的同时避免肌肉流失? +

建议在 TDEE 的基础上创造 300-500 大卡的缺口(约占总热量的 15-20%),这样可以在每周减掉 0.5-1 磅脂肪的同时保留肌肉。过大的热量缺口会加速肌肉流失。在热量缺口期间,摄入充足的蛋白质(每磅体重 0.8-1 克)至关重要。

节食会导致代谢率永久性降低吗? +

不会。代谢适应是可逆的。在恢复至维持体重所需的热量水平 4-8 周后(即进行“饮食休息期”或“反向饮食”),代谢率会逐渐恢复。然而,频繁的极端节食可能会导致在后续的减脂尝试中代谢适应发生得更快。

我应该把运动消耗的热量补回来吗? +

部分补偿即可。健身追踪设备通常会高估 20-50% 的运动热量消耗。如果您的 TDEE 计算中已经包含了活动系数,那么完全补回运动消耗的热量会导致总摄入量超过维持水平。一个稳妥的做法是:仅补回追踪到的运动热量的 50%。

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