大多数运动员所犯的最大错误是在该放松的日子操练的太辛苦，因此当高强度训练的日子来临时，他们又无法达到所要求的强度。
The biggest mistake of most athletes is to make the easy days too hard, so when it comes time for a hard training day, they can't go hard enough.
如果一个运动员主要是训练速度的，那些介于二者之间的肌肉纤维将像高强度肌肉纤维一样动作，而进行耐力训练将使它们的动作更像低强度肌肉纤维。
If an athlete trains mainly for speed, those muscle fibers in the middle will act as if they are high-intensity ones, but endurance training will make them behave more like the low-intensity fibers.
本实验以SD大鼠（含）为实验对象，递增强度跑台训练建立大强度耐力运动模型。
This studies' objects are SD rats( ). The exercise models were set up by progressing intensity endurance training.
区域1，强度低至几乎不算运动，适用于由于前几天训练使您极度疲劳的日子，适用于高强度间歇跑之间的“主动恢复”。
Zone 1 is so light it barely qualifies as exercise, and is appropriate on days when you are especially fatigued from prior days' running and for "active recoveries" between high-intensity intervals.
PRO值的高低与运动强度关系密切，同等训练强度时pro的排泄量高原显著大于平原。
There is close relation between training intensity and value of PRO. Excretion of PRO in altitude is remarkably larger than that in plain at the same intensity.
PRO值的高低与运动强度关系密切，同等训练强度时pro的排泄量高原显著大于平原。
There is close relation between training intensity and value of PRO. Excretion of PRO in altitude is remarkably larger than that in plain at the same intensity.
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