After completing the baseline interview the participant will be assigned to one of two study groups. One group is the treatment group and one involves no treatment and are followed as usual care. Those assigned to the treatment group will be visited by an exercise trainer who will visit the participant three times a week for the first two months of the study, two times per week during months three and four, one time per week during months five and six, two times a month during months seven and eight, and one time a month during months nine through twelve. During months seven through twelve of the study the trainer will contact the participant by telephone once each week during the weeks that he or she does not go the participants' home.