Lying quad stretches are an effective static stretch for runners because they raise muscle stamina during a workout
lower muscle temperature after a workout
stretch the muscles used during the workout
expose the muscles to a different range of motion

Lying quad stretches are effective static stretches for runners because they lower muscle temperature after a workout. Quad streteches are for warming up the legs and also cooling it down. These type of exercise is common for runners because mainly runners use their legs all the time for running, jogging and walking.