DOI: 10.1055/s-0040-1718991
Sarcopenia em Idosos: Um estudo de revisão
Sarcopenia in Elderly: A Review Study
Resumo
Com o envelhecimento, há uma série de modificações fisiológicas em todo o organismo. Na musculatura esquelética, há uma mudança no padrão de fibras rápidas para fibras lentas, levando a uma perda de massa, força e qualidade muscular, o que faz com que, conforme o indivíduo envelheça, fique mais fraco e mais lento. Esta perda de massa e força muscular gera no idoso uma diminuição da mobilidade, aumento da incapacidade funcional e de sua dependência nas atividades, podendo levar até mesmo a consequências mais graves como quedas e fraturas. A este processo denominamos sarcopenia.
Os mecanismos responsáveis pelo desenvolvimento da sarcopenia ainda não são completamente conhecidos, mas sabe-se que alguns fatores como a diminuição dos níveis de hormônios esteroides, diminuição da ingestão proteica, aumento dos níveis de citocinas pró-inflamatórias e inatividade física são fatores contribuintes.
O presente estudo se trata de uma revisão da literatura, na qual foram utilizados estudos científicos com o objetivo de investigar o impacto da sarcopenia na funcionalidade de indivíduos > 65 anos.
Abstract
With aging, there are several physiological changes throughout the body. In the skeletal musculature, there is a change in the pattern from fast to slow fibers, leading to a loss of muscle mass, strength and quality, which causes the individual to become weaker and slower. This loss of muscle mass and strength generates in the elderly a decrease in mobility, increased functional disability and dependence on activities, and may even lead to more serious consequences such as falls and fractures. We call this process sarcopenia.
The mechanisms responsible for the development of sarcopenia are not yet fully known, but it is known that factors such as decreased steroid hormone levels, decreased protein intake, increased proinflammatory cytokine levels and physical inactivity are contributing factors.
The present study is a review of the literature, which used scientific studies to investigate the impact of sarcopenia on the functionality of individuals > 65 years old.
Publication History
Received: 14 August 2020
Accepted: 25 August 2020
Publication Date:
08 December 2020 (online)
© 2020. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/).
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