A prática de exercício físico em academias e o consumo de suplementos, hábitos alimentares, composição corporal e dano no DNA : estudo comparativo entre Brasil e Espanha.

Abstract

INTRODUCTION: The global fitness market is constantly expanding, both in Brazil and in Spain. Fitness centers and/or gyms have been attracting more and more fans of physical exercise. Furthermore, it is of great interest to know the factors that are associated with the practice of physical exercise in these places. GENERAL OBJECTIVE: To assess the profile of Brazilian and Spanish gym-goers in terms of demographic variables, lifestyle, physical exercise, dietary supplementation, body and dietary composition and genomic stability. ABSTRACT OF ARTICLE I: VALIDATION OF A QUESTIONNAIRE TO ASSESS STRESS, TOBACCO USE, PHYSICAL ACTIVITY AND FOOD SUPPLEMENTATION. Objective: To develop and validate a questionnaire to assess the lifestyle, physical activity and dietary supplementation habits of gym-goers. Materials and methods: A 44-item questionnaire was developed. The Delphi technique was used to validate the content and appearance using the content validity index (CVI). The validation of the constructs was verified by exploratory factor analysis (EFA) in several phases. Reliability analysis was assessed by internal consistency and temporal reproducibility using Cronbach's alpha and the intraclass correlation coefficient (ICC), respectively. Results: Two rounds of the Delphi technique identified a total CVI of 100%. The final model was composed of eight items, with excellent quality in the EFA adjustment, and distributed into four factors. Internal consistency was adequate in all factors, with ICCs of 0.997, 0.916, 0.698 and 0.631. Conclusions: This study provides a reliable and valid questionnaire to assess stress, smoking, physical activity and dietary supplementation among gym members.