Physical exercise remobilization effects on bone density in adults and elderly rats

Authors

  • Guilherme Akio Tamura Ozaki Universidade Estadual Paulista "Júlio de Mesquita Filho", São Paulo
  • Tatiana Emy Koike Universidade Estadual Paulista "Júlio de Mesquita Filho", São Paulo
  • Robson Chacon Castoldi Universidade Estadual Paulista "Júlio de Mesquita Filho", São Paulo
  • André Augusto Baldacin Garçon Universidade Estadual Paulista "Júlio de Mesquita Filho", São Paulo
  • Fábio Yoshikazu Kodama Universidade Estadual Paulista "Júlio de Mesquita Filho", São Paulo
  • Adriana Yukie Watanabe Universidade Estadual Paulista "Júlio de Mesquita Filho", São Paulo
  • Aldo Eloizo Job Universidade Estadual Paulista "Júlio de Mesquita Filho", São Paulo
  • Mário Jefferson Quirino Louzada Universidade Estadual Paulista "Júlio de Mesquita Filho", São Paulo
  • Regina Celi Trindade Camargo Universidade Estadual Paulista "Júlio de Mesquita Filho", São Paulo
  • José Carlos Silva Camargo Filho Universidade Estadual Paulista "Júlio de Mesquita Filho", São Paulo

DOI:

https://doi.org/10.6063/motricidade.2725

Abstract

This study aimed to analyze the effects of remobilization by means of physical exercise on bone tissue in rats and elderly adults. A total of 80 male Wistar rats were split into two groups, aged five months to 15 months for adults and elderly; each one was further split into 4 subgroups: control (G1 and G5), immobilized groups (G2 and G6), remobilized groups free (G3 and G7), remobilized groups through exercise (G4 and G8). The immobilized groups were euthanized immediately after removal of immobilization, which lasted for 14 days. The remobilized groups remained free for seven days in collective cages after removal immobilization, followed by euthanasia. The exercise groups underwent swimming for 25 min/day during 7 days and then were euthanized. It was observed that groups remobilized G3/G7 and G4/G8, had an increase in bone mass compared to the G1/G5 and G2/G6. With respect to mechanical analysis, in the adult group was statistically significance when compared G2 and G3. The immobilization process caused a reduction in the bone mineral density, likewise reducing their mechanical properties.

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Published

2014-09-01

Issue

Vol. 10 No. 3 (2014)

Section

Original Article

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