• Jessica Wonn and Joetta Khan.
• Nutrition Services Department, Education and Research Division, Walter Reed National Military Medical Center, Bethesda, MD 20889, USA.
• Mil Med. 2023 Jan 4; 188 (1-2): e248e253e248-e253.

IntroductionOverweight and obesity rates continue to rise among U.S. Army soldiers, which impacts their overall readiness status and puts them at greater risk for musculoskeletal injury and development of chronic disease. To address the concern with obesity and ensure that Soldiers are meeting body composition standards, the Army offers Fit for Performance-Weight Loss Strategies curriculum, a program of standardized material on nutrition and physical activity presented over six 1-hour sessions. This study aimed to evaluate the success and attrition of weight loss programs using the Fit for Performance curriculum in an Army setting among TRICARE regions.Materials And MethodsThis retrospective cohort study consolidated data on participants in weight loss programs using the Fit for Performance curriculum. It examines attrition rates, weight loss, change in body mass index (BMI), factors influencing weight loss, and attrition based on geographical location. Statistical analysis was completed using R Core Team software, version 3.6.1, for t-tests, linear regression, and analysis of variance. Significance was set at P ≤ .05. This study was determined to be exempt by the Walter Reed National Military Hospital Institutional Review Board.ResultsIn total, 8,336 U.S. Army soldiers (80% male, mean age = 26.2 ± 6.9 years) participated in the program. Attrition rates were high (96.4%). Those who attended 4-6 sessions lost significantly more weight than those who attended 1-3 sessions (0.72 kg [1.60 lbs], P < .001); however, weight lost was not clinically significant. Sex, age, and number of sessions attended influenced to the amount of weight lost, but only accounted for 4% of the variation. Among TRICARE regions there was a significant difference in attrition rates, with those in the Western (1.2 sessions, P < .001) and Overseas (1.6 sessions, P < .001) regions attending statistically fewer sessions than those in the Eastern region.ConclusionsConsistent attendance in a weight loss program promotes changes in BMI, which may improve the health of the force. However, the factors influencing these changes are unclear. The results indicate opportunities to re-examine current processes and the program elements to encourage increased or complete participation and determine if program element changes are warranted for the Fit for Performance-Weight Loss Strategies Program. Attrition rates were high, indicating opportunities to research reasons for attendance and attrition in the future. Finally, these findings highlight an opportunity for educating the military leadership on the increased success with increased attendance.Published by Oxford University Press on behalf of the Association of Military Surgeons of the United States 2021. This work is written by (a) US Government employee(s) and is in the public domain in the US.

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