Where should the heart rate be for ms patients when working out?

Rule of thumb: A good rule of thumb is to subtact your age from 220 and multiply x 0.6. For instance, at 41, an ideal workout would achieve a hr of 107. That said, with ms, it may be difficult to reach this if you can't vigorously use your muscles so i would just aim for a hr that you can comfortably reach and understand that any form of exercise is good and ultimately beneficial.

Target heart rate: Target heart rate is 85-90% of maximum heart rate based on your age -- in your case at age 41 your target heart rate is 150-160 in the presence of normal heart function.

Complex: Aerobic exercise is great for MS patients, and you can base your heart rate goals on standard tables available on health club machines, assuming you have no frank cardio-respiratory co-morbidities. Key issue is body temperature, as you do not want to "overheat", due to risk of increased fatigue, or even a "pseudo-relapse".