Relationship between bone health and physical performance of children and adolescent baseball players at Nikkey Marilia

The general objective of this study was to relate some indicators of physical performance (abdominal strength, arms and legs) with bone health: Bone Mineral Density (BMD) and Bone Mineral Content (BMC) of children and adolescents baseball players in the Nikkey Marilia. The specific objectives were: (a) To identify the levels of abdominal strength, arms and legs of children to adolescent baseball players at Nikkey Marilia, according to chronological age and according to biological maturation. (b) Compare the results with data from baseball players who represented Brazil in international competitions in previous years. Methodology: it was a descriptive and cross-sectional field study, the sample was composed of 33 children to adolescents of the male gender, with chronological age 12.9 +/- 2.5 and biological maturation (PVC) 14.1 +/- 2.1. The sample selection was for convenience (not probabilistic). The statistical treatment used consisted of analyzing the arithmetic mean, standard deviation test "t" for a sample and Pearson's correlation. Results: relating bone health with physical performance, it was observed that the Nikkey Marilia baseball players who had higher BMD values were the ones who showed better performance in the medicine ball throwing test (0.88) and horizontal jump without momentum (0.70); the same was also observed when the CMO was analyzed with the strength test in the upper limbs and trunk (0.86). It is recommended to use the peak growth velocity (PVC) as a reference as a method of study in children to adolescents. Conclusions: the logo study describes the anthropometric characteristics, bone health and physical performance of the young athletes of the nikkey, using low-cost and easy-to-use tools.