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Publication
Atividade física e qualidade de vida
Advisor(s)
Abstract(s)
Objetivo: O objetivo deste estudo foi contribuir para a validação da escala Quality of Life (QoL) de Gill et al. (2010) em português. Outro objetivo do estudo é aferir que a atividade física (AF) reduz os níveis de fadiga e como tal melhora a Qualidade de Vida (QV) e Estado de Saúde dos indivíduos e analisar a correlação entre estes constructos.
Método: foi realizada a tradução e retroversão do instrumento QoL A bateria final utilizada incluía a escala Qualidade de Vida adaptada para português, os 12-itens da escala de estado de saúde Health Survey (SF-12), e da Checklist of Individual Strength (CIS20), e foi aplicado a uma amostra de 322 participantes (70,2% sexo feminino, idades M = 38,9). Resultados: foi realizada uma Análise Fatorial Confirmatória (AFC) onde se verificou que os índices de ajustamento são os adequados (χ²/gl=2.33; GFI=.84; CFI=.91; RMSEA=.064). A escala QV e as suas dimensões têm uma boa consistência interna pois a escala apresenta um Alfa de Cronbach de .94, e este valor nas dimensões varia entre .83 e .91. Quanto à sensibilidade dos itens todos apresentam valores absolutos de assimetria e curtose abaixo de 3 e de 8 respetivamente (Kline, 1998). Nos resultados obtidos verificou-se que tanto o estado de saúde como a QV relacionam-se com a prática de AF, sendo que para o estado de saúde r=.180; p<.001 e na QV r=,222; p=.000. No entanto a QV e duração de AF por dia não estão relacionadas. Constata-se ainda que a fadiga tem um efeito de mediação parcial na QV (Z=6.31), a saúde diminui o seu efeito mas não o anula na totalidade. A Fadiga tem ainda um efeito de mediação total na relação entre prática de AF e QV (teste de Sobel com Z=5.24).
ABSTRACT: Objective: The aim of this study was to contribute to the scale validation Quality of Life (QoL) of Gill et al. (2010) in Portuguese. Another purpose of this study is to analyze the correlation between quality of life (QOL) in psychological terms and the practice of physical activity (PA) and realize indicators of Subjective Fatigue in PA and other behaviors related to health. Method: Translation and retroversion of QoL instrument. The final questionnaire used included Quality of Life Assessment adapted to Portuguese, the 12-item Health Survey (SF-12), and the Checklist of Individual Strength (CIS20) and was applied to a sample of 322 participants (70.2% females, M age = 38.9). Results: Through Confirmatory Factor Analysis (CFA) it was found that adjustment indexes are appropriate (χ²/gl=2.33; GFI=.84; CFI=.91; RMSEA=.064). QOL scale and its dimensions have good internal consistency, the scale has a Cronbach's alpha of .94, and this value in dimensions ranging between .83 and .91. The sensitivity of the items all have absolute values of skewness and kurtosis below 3 and 8 respectively (Kline, 1998). The results obtained found that the state of Sand r=,222; p=.000 for QOL. Noted also that fatigue mediation has a partial effect on the QOL (Z = 6.31), health decreases its effect but does not nullify entirely. Fatigue has a full mediation effect on the relationship between practice of PA and QoL (Sobel test with Z = 5.24).
ABSTRACT: Objective: The aim of this study was to contribute to the scale validation Quality of Life (QoL) of Gill et al. (2010) in Portuguese. Another purpose of this study is to analyze the correlation between quality of life (QOL) in psychological terms and the practice of physical activity (PA) and realize indicators of Subjective Fatigue in PA and other behaviors related to health. Method: Translation and retroversion of QoL instrument. The final questionnaire used included Quality of Life Assessment adapted to Portuguese, the 12-item Health Survey (SF-12), and the Checklist of Individual Strength (CIS20) and was applied to a sample of 322 participants (70.2% females, M age = 38.9). Results: Through Confirmatory Factor Analysis (CFA) it was found that adjustment indexes are appropriate (χ²/gl=2.33; GFI=.84; CFI=.91; RMSEA=.064). QOL scale and its dimensions have good internal consistency, the scale has a Cronbach's alpha of .94, and this value in dimensions ranging between .83 and .91. The sensitivity of the items all have absolute values of skewness and kurtosis below 3 and 8 respectively (Kline, 1998). The results obtained found that the state of Sand r=,222; p=.000 for QOL. Noted also that fatigue mediation has a partial effect on the QOL (Z = 6.31), health decreases its effect but does not nullify entirely. Fatigue has a full mediation effect on the relationship between practice of PA and QoL (Sobel test with Z = 5.24).
Description
Dissertação de mestrado apresentada ao ISPA – Instituto Universitário
Keywords
Qualidade de vida Saúde Atividade física Exercício físico Fadiga Quality of life Health Physical activity Physical exercise Fatigue