**5. Conclusion**

Two decades of research support the assertion that exercise is both safe and beneficial during cancer treatment. Most standard exercise protocols are well tolerated by patients. However, it is important that the fitness professional be aware of the specific effects of cancer and its treatments on the exercise response. Exercise prescriptions must be individualized according to the specific needs and health status of each patient. During each exercise session, modifications may need to be made to ensure patient safety, depending on the changing health of each patient. With the right program, remaining physically active during and after cancer treatment will improve the patient's muscular strength and aerobic functioning, decrease fatigue, improve QOL and have a favorable effect on anxiety.
