Some muscles may have contracted, or shortened, due to postural problems. Other muscles which oppose them might have lengthened and weakened. It is necessary to stretch the shortened muscles before trying to strengthen, or tighten, the longer muscles. Physiotherapy exercises have been invented for just this purpose. Other times, the patient will try to use the affected limb but will naturally fall back on the limb that is functioning well. In this case, stroke rehabilitation may involve gently restraining the healthy limbs. It can be a difficult task of stroke rehabilitation to help victims relearn switching from one task to another. Physiotherapy will usually begin within a couple of weeks of cardiac surgery, if not sooner. The first step is for nurses or doctors to administer a stress test to determine how much exercise one can handle. This involves walking on a treadmill or riding on a stationary bike while having one's vital signs monitored. It can limit the range of a player's motion in that leg, and make the leg weak. Surgery is sometimes done for these sports injuries, but physiotherapy is always a part of the treatment. The three major exercises done to start the healing process of ACL are heel slides, quad sets, and straight leg raises. Research shows that these diseases can be held off by exercise and other lifestyle changes. For the sufferer of rheumatoid arthritis, life is a constant learning experience. Each time a new movement is done, one finds out if it makes the condition feel worse or better. Rheumatoid arthritis patients may feel fatigue. It is to her advantage to encourage trust by being open about her physiotherapy credentials. There is no need to be suspicious or unfriendly about asking for physiotherapy credentials. Chances are your physiotherapist is perfectly qualified to meet all your needs for physical rehabilitation or help with physical problems.