Too many marathoners emphasize volumeoftraining over quality.
太多的马拉松人强调训练的数量而不是品质。
2
Combining both frequency and duration refers to the volumeoftraining, thus much easier to quantify.
频率和持续时间的结合指的是训练量,这很容易量化。
3
But sometimes though athletes training for a large volumeoftraining time is also long enough to really improve athletic performance is very slow, difficult to find effective ways.