| Grant number: | 17/09182-5 |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| Start date: | August 01, 2017 |
| End date: | June 26, 2022 |
| Field of knowledge: | Health Sciences - Physical Education |
| Agreement: | Coordination of Improvement of Higher Education Personnel (CAPES) |
| Principal Investigator: | Rômulo Araújo Fernandes |
| Grantee: | Ricardo Ribeiro Agostinete |
| Host Institution: | Faculdade de Ciências e Tecnologia (FCT). Universidade Estadual Paulista (UNESP). Campus de Presidente Prudente. Presidente Prudente , SP, Brazil |
| Associated scholarship(s): | 18/24164-6 - LONGITUDINAL ADAPTATIONS IN BONE GEOMETRY AND STRENGTH IN ADOLESCENTS ENGAGED IN SIX DIFFERENT SPORTS: ABCD - GROWTH STUDY, BE.EP.DR |
Abstract Introduction: Sport is considered an important health promoting agent capable of affecting and modifying bone tissue during adolescence, especially in bone density. However, there are doubts about the real effect of the sport practice performed in liquid on the bone health of young people. Swimming is a sport widely practiced by pediatric populations worldwide, and recent studies have identified that the mechanisms linking swimming practice to losses in bone density gain among adolescents are far from clear. Objectives: To compare bone density gain during 12 months of follow-up among adolescents swimmers (at competitive level) and their sedentary pairs, as well as to identify the role of markers of bone formation, habitual physical activity and immune system in this process. Methods: A longitudinal study (12 months duration and three measures [baseline, 6 months and 12 months]) that will be conducted in the city of Presidente Prudente - SP. The sample will be composed of adolescents aged between 11 and 17 years, divided into two groups: 1- Control Group (not engaged in periodized sports practice) and 2- Group Natação (athletes competing at least at state level). Specific inclusion criteria will be adopted for both groups.It Will be analyze as outcome of the study, 1 dependent variable: bone mineral density analyzed by dual energy x-ray absorptiometry (DEXA). 2- Independent variables: i) Practice of habitual physical activity (accelerometer), ii) Training intensity, iii) Osteocalcin; Iv) IL-6. 3 - Confusion variables: i) Age; Ii) Biological maturation; Iii) Growth hormone (GH); Iv) Insulin-like growth factor (IGF-1); V) Vitamin D and vi) Serum calcium. In all statistical procedures used, the statistical significance adopted will be p-value <0.05, and all analyzes were performed in BioEstat software (version 5.0, Tefé, Amazonas) and STATA 13.0. Expected Results: It is expected to finally understand the effect of swimming practice on markers of bone formation as well as on bone mineral density of adolescents. | |
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