PhD. Associate Professor, Department of Gerontology, Universidade Federal de São Carlos (UFSCar), São Carlos (SP), Brazil.
MD, MSc. Gerontologist, Department of Gerontology, Universidade Federal de São Carlos (UFSCar), São Carlos (SP), Brazil.
Sao Paulo Med J. 2023 Jan-Feb;141(1):30-35. doi: 10.1590/1516-3180.2021.0968.R1.07042022.
Sarcopenia is defined as a slow, progressive, and apparently inevitable process of involuntary loss of muscle mass, strength, and quality, which occurs with advancing age. It is widely accepted that sarcopenia can directly affect quality of life.
Translate, adapt and validate the "Sarcopenia and Quality of Life" instrument (SarQoL) to the Brazilian context.
Translation, cross-cultural adaptation, and validation study carried out at the Federal University of São Carlos, São Carlos, São Paulo, Brazil.
The population consisted of 221 older adult participants. The steps recommended by the guidelines from the authors of the original instrument were followed sequentially: initial translation, synthesis of translations, backward translation, evaluation by a panel of judges, pre-test, and analysis of psychometric properties. The translation and adaptation process was conducted as recommended.
Two hundred and twenty-one participants took part in the step analysis of the psychometric properties of SarQoL, in which 55 presented sarcopenia. Cronbach's alpha coefficient of the total SarQoL questionnaire was 0.976, indicating excellent internal consistency. Excellent agreements between the test and retest with an Interclass Correlation Coefficient (ICC) of 0.983 (95% confidence interval: 0.901-0.996) were observed in the SarQoL domains. The domains of Short-Form 36 and EuroQoL 5-dimension showed significant correlation, from moderate to strong magnitude, with SarQoL total score, indicating convergent validity.
The Brazilian version of SarQoL presented evidence of reliability and validity.
肌少症定义为一种随年龄增长而出现的、肌肉质量、力量和功能进行性、不可避免的下降，其特征为肌肉减少。肌少症被广泛认为会直接影响生活质量。
将“肌少症与生活质量量表”（SarQoL）翻译成巴西葡萄牙语，并对其进行验证。
该翻译、跨文化适应性和验证研究在巴西圣卡洛斯联邦大学进行。
研究人群由 221 名老年参与者组成。按照原始量表作者指南的建议，逐步进行以下步骤：初始翻译、翻译合成、回译、专家小组评估、预测试以及心理测量学特性分析。按照推荐的方法进行翻译和适应性调整。
221 名参与者参加了 SarQoL 心理测量学特性的步骤分析，其中 55 名参与者患有肌少症。SarQoL 总问卷的克朗巴赫 α 系数为 0.976，表明内部一致性极好。SarQoL 各领域的测试-重测间具有极好的一致性，组内相关系数（ICC）为 0.983（95%置信区间：0.901-0.996）。SF-36 短表和 EQ-5D 维度与 SarQoL 总分之间存在显著相关，表明具有收敛效度。
巴西版 SarQoL 具有良好的信度和效度。
