High-Intensity Interval Training for Women at Heightened Risk for Breast Cancer

"High-Intensity Interval Training (HIIT) Group: Participants walk uphill on a treadmill for a total of 33 minutes 3 times a week for 12 weeks.There is a 5-minute warm up, followed by four 4-minute intervals. Between each interval, participant walks for 3 minutes. There is a 3 minute cool down.~Moderate-Intensity Continuous Training (MICT) Group: Participants walk uphill on a treadmill or use a stationary bicycle continuously for 41 minutes 3 times a week for 12 weeks."

Participants complete questionnaires about their quality of life, exercise experience, and level of fatigue at baseline and at 12 weeks. These should take a total of about 15 minutes to complete.

One (1) time each month, participant attends a motivational session for 12 weeks.

Participants called by a member of the study staff 1 time each week for 12 weeks and asked about any exercise they have done and their weight loss goals. Each phone call should take about 15 minutes.

"High-Intensity Interval Training (HIIT) Group and Moderate-Intensity Continuous Training (MICT) Group: Participants receive written materials and instructions on how to perform their exercises.~Control Group: Participants receive written materials and counseling by an exercise physiologist."