Exercise Snacks in Obesity

To conduct a randomized control trial to determine the feasibility and preliminary efficacy of a 12-week technology-enabled exercise snacks intervention with behaviour change counselling for improving cardiorespiratory fitness and various markers of cardiometabolic health in previously inactive adults living with obesity.

Inclusion Criteria: * Aged 35-64 years. * Habitually engaging in \< 150 min moderate-to-vigorous physical activity per week. * Body mass index 30-45 kg/m2 or 27.5-45 for participants who self-identify as being of Asian or Southeast Asian origin. * Waist circumference: \>88cm for females and \>102cm for males, or \>80 cm for females and \>90 cm for male participants who self-identify as being of Asian or Southeast Asian. * Not currently diagnosed with a cardiometabolic disease (e.g., coronary artery disease, stroke, diabetes, non-alcoholic fatty liver disease). * Taking ≤2 commonly prescribed medications for the prevention of cardiometabolic diseases (e.g., statins, antihypertensives). * Not a current smoker * Cleared to engage in physical activity using the Get Active Questionnaire and, if applicable, consultation with a health care provider or Qualified Exercise Professional. * Access to a computer, tablet or smartphone for intervention delivery and tracking. * Ability to read and write in English. Exclusion Criteria: * Chronic musculoskeletal condition or recent (within 2 years) cardiovascular event preventing participation in exercise. * Lack of internet access. * Angina upon exertion assessed by the Rose Angina Questionnaire. * Prescribed beta-blockers that can compromise the validity of heart rate measurements. during the exercise test. * Have a scheduled surgical procedure within the next 3-4 months that would prevent exercise participation. * Currently participating in another clinical trial that interferes with the study procedures. * Currently pregnant or planning on becoming pregnant during the intervention (i.e., within the next 4 months). * Uncontrolled high blood pressure (\>160/90 mmHg)