The purpose of this research study is to see if a weight training program can make a positive change in cardiac fitness, that is a person's ability to use oxygen; and, if the program can help a person's memory, as measured by some standard tests. The researchers will also ask the participant to attend two sessions with researchers at the Bascom-Palmer Eye Institute so they can take pictures of the participants' eyes to see how training changes the number of blood vessels. This can be used by doctors and other clinicians to evaluate improvements blood flow to the brain due to training.
