To build and maintain muscle strength, it is best for older breast cancer survivors to follow an ongoing exercise program of resistance and impact training. This advice comes from Jessica Dobek of the Oregon Health and Science University, lead author of a study published in Springer's Journal of Cancer Survivorship. Dobek is part of a research team, headed by Dr. Kerri Winters-Stone, that found that the bone benefit from one year of such training could be maintained, even with less exercise, up to a year later, which could help prevent bone fractures in the long run.