Internet-Based Lifestyle Intervention to Eradicate Obese Frailty in Prostate Cancer Survivors, iLIVE

Inclusion Criteria: * INTERVENTION PARTICIPANTS: Age 18 or older * INTERVENTION PARTICIPANTS: Diagnosed with histologically confirmed prostate cancer * INTERVENTION PARTICIPANTS: Received \>= 6 months of ADT any time in the past 10 years * INTERVENTION PARTICIPANTS: Completed radiotherapy, chemotherapy and/or surgery \> 6 weeks prior to * INTERVENTION PARTICIPANTS: No intent to start adjuvant chemotherapy or radiotherapy within 6 months of enrollment * INTERVENTION PARTICIPANTS: Overweight or obese (body mass index \> 25 kg/m2 to BMI ≤ 50). * INTERVENTION PARTICIPANTS: Evidence of frailty by meeting three or more of the following frailty criteria: weakness, slowness, fatigue, inactivity, and/or illness * INTERVENTION PARTICIPANTS: Not currently engaging in structured diet or resistance strength training exercise program * INTERVENTION PARTICIPANTS: Willing to be randomized into either study arm and adhere to study protocol * INTERVENTION PARTICIPANTS: Home internet sufficient for videoconferencing * INTERVENTION PARTICIPANTS: Signed informed consent * IMPLEMENTATION PARTICIPANTS: Be a key stakeholder (i.e., healthcare provider or administrative, or intervention participant \[completers, partial completers, or no participation\]) * IMPLEMENTATION PARTICIPANTS: Verbal informed consent following receipt of an information sheet Exclusion Criteria: * INTERVENTION PARTICIPANTS: Unintentional weight loss \> 5% within the last year * INTERVENTION PARTICIPANTS: Contraindication to moderate intensity exercise * INTERVENTION PARTICIPANTS: Health or medical condition that affects weight status/body composition (e.g., Cushing's syndrome, uncontrolled hyper-/hypo- thyroidism) * INTERVENTION PARTICIPANTS: Active malignancy (other than non-melanoma skin cancer) * INTERVENTION PARTICIPANTS: Not fluent in English and therefore incapable of answer survey questions, following directions during exercise or performance testing, and providing informed consent in English * INTERVENTION PARTICIPANTS: Currently taking or have taken creatine supplement in the month preceding baseline creatine testing