"F!reF!ghterF!t": Lifestyle Coaching Interventions for Obese Firefighters (FireFit)

Summary

Our goal is to explore the effectiveness of 9- month lifestyle medicine based coaching intervention (individual and group coaching) versus control (usual care/ written health instructions). The primary study outcomes will be mean changes in body composition metrics . Secondary outcomes will be the prevalence of metabolic abnormities, progression/regression of Metabolic Syndrome, push-up \& sit/stand capacity, self-reported physical activity, and quality of life/diet/sleep measures.

Eligibility

Inclusion Criteria:

* Male firefighters aged 18-60 years
* Currently active as volunteer or career firefighters
* Body mass index (BMI) ≥30 kg/m² based on self-reported height and weight
* Express interest in participating in a clinical study aimed at improving body composition (weight loss), metabolic status, and quality of life
* Residing and/or working in Massachusetts, Rhode Island, or Southern New Hampshire (Boston metro area)

Exclusion Criteria:

* Female sex\*
* BMI \<30 kg/m² based on self-reported height and weight
* Active psychosis
* History or diagnosis (during the RCT) of any of the following:

Major cardiovascular disease event (e.g., myocardial infarction, cardiac arrest, cerebrovascular accident) Cancer (excluding non-melanoma skin cancer) Abnormal liver function (aminotransferase, bilirubin, or alkaline phosphatase ≥3× the upper limit of normal) Renal dysfunction (estimated glomerular filtration rate ≤30 mL/min/1.73 m²)

* Current or recent (within 6 months) use of testosterone treatment or anti-obesity/obesogenic medications
* Unwillingness to adhere to 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.

Conditions2

Locations1 site

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