Objective: To investigate the relationship between anthropometry and body composition with dynamic postural balance in elderly women with low bone mineral density (BMD). Methods: 45 older women (≥ 60 years), low BMD and nutritional diagnosis of low weight to overweight. For the assessment of body composition, Dual energy X-ray emission densitometry and anthropometric examination were used to measure: body mass (kg), height (cm) and BMI (k/m2). The assessment of dynamic postural balance was performed by the mini Balance Master Evaluation System clinical test and the computerized Balance Master® System test by the Sit to Stand and Step Up/Over tests. Results: There was a negative correlation between miniBESTest (r = − 0.566; p ≤ 0.001) and time to ascend and descend step (r = − 0.393; p ≤ 0.007) with fat mass, and positive correlation with miniBESTest (r = 0.526; p ≤0.001) and time to go up and down a step with muscle mass (r = 0.297; p ≤ 0.04). As for anthropometric variables, only height showed a positive correlation (r = 0.296; p ≤ 0.04) with the speed in the sit and stand test. Conclusion: Lean mass reduces postural oscillations; in contrast, fat mass negatively interfered with dynamic postural balance in women with low BMD. Height was related to dynamic postural balance, the taller the elderly, the worse their balance. Level of Evidence II, Prognostic Studies - Investigating the Effect of a Patient Characteristic on the Outcome of Disease.
Objetivo: Investigar a relação da antropometria e composição corporal com equilíbrio postural dinâmico em idosas com baixa Densidade Mineral Óssea (DMO). Métodos: 45 idosas (≥ 60 anos), baixa DMO e diagnóstico nutricional de baixo peso à sobrepeso. Para a avaliação da composição corporal foi utilizado a Densitometria por emissão de raios-x de dupla energia e exame antropométrico para aferir: massa corporal (kg), estatura (cm) e IMC (k/m2). A avaliação do equilíbrio postural dinâmico foi realizada pelo teste clínico mini Balance Master Evaluation System e o teste computadorizado Balance Master® System pelos testes Sit to Stand e Step Up/Over. Resultados: Houve correlação negativa do miniBESTest (r=-0,566; p≤0,001) e tempo de subir e descer degrau (r=-0,393; p≤0,007) com a massa gorda, e correlação positiva do miniBESTest (r=0,526; p≤0,001) e tempo de subir e descer um degrau com a massa muscular (r=0,297; p≤0,04). Quanto às variáveis antropométricas apenas a estatura apresentou correlação positiva (r=0,296; p ≤ 0,04) com a velocidade no teste de sentar e levantar. Conclusão: A massa magra reduz as oscilações posturais; em contrapartida a massa gorda interferi de forma negativa para o equilíbrio postural dinâmico em mulheres com baixa DMO. A estatura relacionou com o equilíbrio postural dinâmico, quanto mais alta as idosas pior seu equilíbrio.
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