Self-concept, physical activity and harmful substances: A structural equation model

Abstract

The present study defines and contrasts an explanatory model of alcohol and tobacco consumption, and physical activity engagement according to the five dimensions of self-concept in a sample of 2.134 adolescents from the province of Granada (Spain). The instruments used were the Self-concept Questionnaire Form-5, the Test for the Identification of Disorders in the Use of Alcohol-AUDIT, the Test for the Nicotine-FTND Unit and an ad-hoc questionnaire designed to estimate physical activity engagement. The structural equation model developed in the present study demonstrated acceptable fit indices (x2 = 79.476, gl = 8, p = 0,000, CFI = 0,968, NFI = 0,964, IFI = 0,968, RMSEA = 0,065). The results show a positive relationship between alcohol consumption and tobacco consumption, with negative relationships between alcohol consumption and family, emotional and academic self-concept.