http://www.bikeradar.com/gear/article/resistance-training-for-cyclists-35771/To strengthen the lumbar spine — Do hyper-extensions or “Super Man's”
To strengthen the abdominals — Do crunches on physio-ball, planks, bridge on ball
To strengthen the quadriceps – Do squats, leg extensions, dead lifts
To strengthen the hamstrings – Do hamstring curls, Romanian dead lifts, bridge on ball with hamstring curls
To strengthen the calves – Do seated or standing calf raises
Sugiro a prática de BTT, dizem que fortalece bastante os músculos utilizados em BTT.