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ORIGINAL ARTICLE  BODY COMPOSITION, NUTRITION AND SUPPLEMENTATION 

The Journal of Sports Medicine and Physical Fitness 2021 June;61(6):829-35

DOI: 10.23736/S0022-4707.20.11497-X

Copyright © 2020 EDIZIONI MINERVA MEDICA

lingua: Inglese

The influence of biological maturation and neuromuscular performance on peak bone mineral density in children

Paulo F. de ALMEIDA-NETO 1 , Ricardo F. ARRAIS 2, Dihogo G. de MATOS 3, 4, Tatianny M. CESÁRIO 1, Alexandre BULHÕES-CORREIA 1, Luíz F. SILVA 1, Felipe J. AIDAR 4, 5, Eduardo E. SANTANA 1, Paulo M. SILVA DANTAS 1, Breno G. CABRAL 1

1 Department of Physical Education, Federal University of Rio Grande do Norte (UFRN), Natal, Brazil; 2 Department of Pediatrics, Federal University of Rio Grande do Norte (UFRN), Natal, Brazil; 3 Research Center in Sports Sciences, Health Sciences and Human Development (CIDESD), Trás os Montes and Alto Douro University, Vila Real, Portugal; 4 Group of Studies and Research of Performance, Sport, Health and Paralympic Sports (GEPEPS), Federal University of Sergipe (UFS), São Cristovão, Sergipe, Brazil; 5 Department of Physical Education, Federal University of Sergipe (UFS), São Cristovão, Sergipe, Brazil



BACKGROUND: The growth and development cycle of the adult is characterized by substantial changes in physical size and maturity, and is controlled by the simultaneous influence of genetic components and the environment. Changes in the development of bones, muscles and adipose tissue are among the most important aspects of adolescent physical development. The aim of this research was to examine the correlation between bone mineral density (BMD) and neuromuscular performance in children at different stages of maturation.
METHODS: The study included 31 participants of both sexes (11.7±1.89 years). Body composition was assessed through bone densitometry using an energy duo X-ray source. The neuromuscular performance of the upper limbs was analyzed by the medicine ball hand grip and throwing tests. The lower limbs by the vertical counter-motion jump test, and skeletal maturation was analyzed by bone age. Maturation was used as an effect control between the association of BMD and neuromuscular performance.
RESULTS: The results demonstrated significant associations between the performance of upper (P<0.0001) and lower (P=0.01) limbs and BMD. On inter-group comparison for only the accelerated maturational stage, male participants had greater BMD than female participants (P=0.001; effect size 3.13). Regarding the maturational stages, male participants in the accelerated maturational stage demonstrated higher BMD than those in the normal and delayed maturational stages (P=0.04; effect size 3.10), whereas female participants did not demonstrate significant differences in BMD accumulation.
CONCLUSIONS: BMD has a strong correlation with the neuromuscular performance of upper and lower limbs of children of both sexes.


KEY WORDS: Child; Bone density; Age determination by skeleton; Psychomotor performance

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