This pilot trial examines the feasibility and acceptability of a web-based, social networking exercise intervention in improving physical activity behavior in adults who do not perform regular exercise.

Primary Objective To determine the feasibility and acceptability of an 8-week remotely-delivered exercise intervention by conducting a randomized controlled study comparing 3 levels of behavioral engagement.

Secondary Objectives

To compare the effectiveness of 3 levels of web-based interaction on physical activity behavior, physiological training dose, motivation and quality of life. Participants are randomly assigned to 1 of 3 groups:

Level 1 (attention control): Participants receive health educational materials through email and the web portal.

Level 2 (videos): Participants receive health education materials + access to 24 pre-recorded exercise videos.

Level 3 (livestream classes): Participant receive health education materials + livestream exercise classes 3 days/week for 8 weeks.

Inclusion Criteria:

• Not exceeding 60 total minutes of physical activity per week
• Access to computer or mobile device with high speed internet connection

Exclusion Criteria:

• History of myocardial infarction, angioplasty, coronary artery bypass, cerebrovascular ischemia/stroke, symptomatic congestive heart failure, atrial flutter, unstable angina, or unstable pulmonary disease; pacemaker; history of alcoholism, drug abuse or other psychiatric problems; current use of tricyclic antidepressant or clozapine medications; type 1 diabetes; orthopedic or rheumatologic problems that could impair the ability to walk.