Effects Of Whole 30 Dietary Program On Body Composition And Crossfit Performance: 883 Board #62 May 31 3

PURPOSE: To evaluate the influence of Whole30 program on body composition and CrossFit performance in trained individuals. METHODS: Sixty four subjects (age range: 21-54years) attended to nutrition education class to learn food items and recommended volumes comprising the Whole 30 program (allowed foods: meats, seafood/ fish, eggs, fruit, vegetables and mono and polyunsaturated fats; forbidden foods: sugar, sweeteners, alcohol, flour, oat, quinoa, corn, rice, starch, beans, soy, milk and dairy products) and underwent a 15-day training protocol (4 days/ week). On day 1 and day 15 of the training protocol, performance was measured as the minimum time taken to perform CrossFit workout. The body composition was evaluated by portable ultrasound during the days 1 and 30 of the dietetic program. The collected measures were chest (C), triceps (TR), subscapular (SB), medial axillary (MA), suprailiac (SI), abdomen (AB) and medial thigh (MT), and the fat percentage was automatically calculated by the Body View Software. Samples were tested for normal distribution and groups were compared by either Student’s t-test or Wilcoxon Mann Whitney test. The type 1 error was set at p<0.05. RESULTS: After 30 days of Whole 30 program, there was a significant reduction on the sum of 9 skinfolds (67,76±21,21 vs 53,89±16,32, p<0,0001), total fat (23,24±6,73 vs 19,66±6,37, p<0,0001) and trunk fat (47,07±16,14 vs 36,51±11,91, p<0,0001); and a significant gain of body fat-free mass (76,76±6,73 vs 80,34±6,37, p<0,0001). When subgroup analyses were performed by sex, it was found that the relative loss of body fat (sum of 9 skinfolds, total fat and trunk fat) were similar. Regarding performance, a time reduction to perform the Crossfit workout was observed (14’18” vs 12’33”, pre and post dietetic intervention, respectively). CONCLUSIONS: The Whole 30 dietary program promoted body fat reduction and fat-free mass gain in trained Crossfit individuals. Additionally, after 30 days of dietary program, there was observed improvement in performance by reducing the time taken to perform the CrossFit workout.