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- W4387061874 abstract "PURPOSE: Advertising for this nutritional supplement induces consumers to think their lean mass will increase after a daily intake. Therefore, we assessed the change in lean mass and protein intake in physically active Costa Ricans aged 50 to 60 years before and after consuming the nutritional supplement for ten weeks, reinforcing the clinical nutritionist's role in evaluating these commercial products. METHODS: A non-probabilistic sample of 32 healthy Costa Rican adults (20 women and 12 men), classified with a high level of physical activity” by the International Physical Activity Questionnaire (IPAQ), meaning ≥1500 MET-minutes/week were randomly assigned to the supplementation (SUP, n = 16) and the control group (CON, n = 16). On top of their regular diet, SUP took 230 ml of the supplement (230.04 kcal, 8.59 g prot, 30.16 g CHO,7.56 g of fat, and 1.21 g ß-hydroxy-ß methyl butyrate), while CON had 500 ml of water, for ten weeks. They were required to maintain physical activity and to attend two body composition measurements with Dual X-ray Absorptiometry (DXA). We did three interviews to assess dietary intake. RESULTS: After daily ingestion of the supplement for ten weeks, lean mass change in SUP was not significantly different from CON: 0.72 ± 1.11 kg vs. 0.30 ± 1.25 kg, respectively (p = 0.3734). With a relevant change defined as 1.0 kg and p < 0.05, the statistical power for this comparison was 0.99. Change in protein intake was significantly higher in SUP compared with CON (8.2 ± 24.1 g vs. -6.7 ± 29.3 g, respectively; p = 0.0258). The same result was observed for the energy intake (353.8 ± 370.4 g vs. -260.2 ± 493.5 g, respectively; p = 0.0006), and the carbohydrate intake (50.4 ± 58.9 g vs. -19.8 ± 82.2 g, respectively; p = 0.0087). CONCLUSION: This supplementation, after ten weeks, did not significantly improve lean body mass in physically active healthy Costa Rican adults, despite a 9.3% increase in protein intake in the SUP group. These results do not meet the expectations created by the supplement’s advertising." @default.
- W4387061874 created "2023-09-27" @default.
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- W4387061874 date "2023-09-01" @default.
- W4387061874 modified "2023-10-02" @default.
- W4387061874 title "Lean Mass Not Improved In Physically Active Costa Rican Adults After A Ten-week Nutritional Supplementation" @default.
- W4387061874 doi "https://doi.org/10.1249/01.mss.0000980596.59071.d8" @default.
- W4387061874 hasPublicationYear "2023" @default.
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