Regular low-impact aerobic exercises are the most helpful for raising the pain threshold, although it may take months to perceive benefits. Every patient must be prepared for relapse and setbacks, which are nearly universal, but this should not dissuade the patient from exercising. Rather, they should experiment with various forms of physical activity that can be tolerated using their available energy levels. Desirable exercises are walking, swimming, and using of stationary bikes. Swimming and water therapy, which eliminate weight-bearing, appear to be excellent choices for getting started.
Some experts recommend the use of a training index for gauging progress and establishing a goal.
People just beginning an exercise program should start with an index of 10 to 25 and aim over time for at least 42. Determining Percentage of Maximum Heart Rate Determine the maximum heart rate by subtracting one's age from 220. Determine the heart rate by measuring the pulse either at the carotid artery on the neck or on the inside of the wrist during a workout. It's easiest to count pulse beats for 10 seconds, then multiply by six for the per-minute total. Calculate the percentage of maximum heart rate, by dividing the exercise heart rate by the maximum heart rate and multiply by 100.