"F!reF!ghterF!t": a Randomized Controlled Trial of Lifestyle Coaching Interventions for Obese Firefighters

Eligibility Criteria

• * males aged 18-60 years who are currently active as volunteer or career firefighters, have a BMI of 30 kg/m² or greater based on self-reported height and weight, and express interest in participating in a study of clinical interventions aimed at improving body composition (weight loss), metabolic status, and quality of life. We will recruit participants from Massachusetts, Rhode Island, and Southern New Hampshire, which are part of the Boston metro area.
• * females\*, BMI less than 30 kg/m² based on self-reported height and weight, active psychosis, and a history or diagnosis during the RCT of a major CVD event (myocardial infarction, cardiac arrest, or cerebrovascular accident); cancer (except non-melanoma skin cancer); abnormal liver function (aminotransferase, bilirubin, or alkaline phosphatase ≥3 times the upper limit of normal) or renal function (estimated glomerular filtration rate ≤30 mL/min per 1.73 m²); testosterone treatment; use of anti-obesity (or obesogenic) drugs within the past 6 months; and unwillingness to follow the potential intervention assignments.
• * Because this is an exploratory study, the number of subjects is limited, and men make up roughly 85% of the US fire service, the current proposal is limited to men. In future studies, we will include women firefighters.