You can do this by incorporating another exercise into your training programme. Adding another aspect to your training, shakes-up your body and forces it to exercise in a different way, which makes your aerobic system and muscles work in a different way.
Spinning classes and Kettlebell training are two excellent ways to do this, as they are non-impact and provide a whole body workout, that puts more demands on your body than other forms of exercise.
Varying your exercise regime will keep you stimulated and interested for your main sport, while enhancing and complimenting it.
Give it a try and see the results for yourself!