Method: objects were jogging training over a period of ten weeks, and are evaluated twice cardiorespiratory function after the training by means of step tests and middle - (distance) tests.

方法：受试进行10周慢跑训练，于训练前后按《标准》规定的方法对受试进行台阶试验和中跑测试。

youdao

Irvine also avoided injury by not over-training, building up to the distance he was to run in increments (twenty minutes run then building up to two hours) and stretching after a run.

CNN: Prevention better than cure