Data/hora: 06/06/2024 05:33:57

Provedor de dados: | 56
País: | Brazil
Título: | High-impact exercise in rats prior to and during suspension can prevent bone loss
Autores: | Yanagihara,G.R.; Paiva,A.G.; Gasparini,G.A.; Macedo,A.P.; Frighetto,P.D.; Volpon,J.B.; Shimano,A.C.
Data: | 2016-03-01
Ano: | 2016
Palavras-chave: | Bone; Mechanical properties; Bone mineral density; Scanning electron microscopy; Jump; Rats.
Resumo: | High-impact exercise has been considered an important method for treating bone loss in osteopenic experimental models. In this study, we investigated the effects of osteopenia caused by inactivity in femora and tibiae of rats subjected to jump training using the rat tail suspension model. Eight-week-old female Wistar rats were divided into five groups (n=10 each group): jump training for 2 weeks before suspension and training during 3 weeks of suspension; jump training for 2 weeks before suspension; jump training only during suspension; suspension without any training; and a control group. The exercise protocol consisted of 20 jumps/day, 5 days/week, with a jump height of 40 cm. The bone mineral density of the femora and tibiae was measured by double energy X-ray absorptiometry and the same bones were evaluated by mechanical tests. Bone microarchitecture was evaluated by scanning electron microscopy. One-way ANOVA was used to compare groups. Significance was determined as P&lt;0.05. Regarding bone mineral density, mechanical properties and bone microarchitecture, the beneficial effects were greater in the bones of animals subjected to pre-suspension training and subsequently to training during suspension, compared with the bones of animals subjected to pre-suspension training or to training during suspension. Our results indicate that a period of high impact exercise prior to tail suspension in rats can prevent the installation of osteopenia if there is also training during the tail suspension.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016000300605
Editor: | Associação Brasileira de Divulgação Científica
Relação: | 10.1590/1414-431X20155086
Formato: | text/html
Fonte: | Brazilian Journal of Medical and Biological Research  v.49 n.3 2016
Fonte: | info:eu-repo/semantics/openAccess