Strength exercise for front thighs.
Näin teet sen
Adjust the backrest so that the turning point is in the middle of the knee joint. For most people, this will mean that the edge of the seat hits the kneecap.
Adjust the ankle pad so that it hits the ankle joint.
Sit firmly with your back firmly against the backrest and push your ankles up and forward, stretching out your legs.
Return controlled back start.