Impacto da obesidade, qualidade do sono e nível de atividade física na composição corporal e variabilidade da frequência cardíaca

Abstract

Objective: The parameters of heart rate variability (HRV) in non-obese, overweight and obese individuals were compared, correlating with body composition, International Physical Activity Questionnaire (IPAQ) and Pittsburgh Sleep Quality Index (PSQI), in addition it was correlated body composition with IPAQ and PSQI. Methodology: 51 patients were selected (age: 18 to 39 years old), without comorbidities, who underwent a clinical evaluation with vital signs measurement, nutritional status classification, body composition, through electrical bioimpedance, questionnaires application: IPAQ and PSQI and HRV measurement. Results: The body composition variables that were most influenced between the eutrophic, overweight and obese groups were: age, body weight, body mass index, basal metabolic rate, visceral fat level, skeletal muscle mass, fat mass body weight, visceral fat percentage and minerals. In HRV, the Stress Index (SI) was the one that was most influenced by the different levels of BMI. About PSQI, it was more influenced by the parameters: body water, lean mass, fat-free mass and proteins. Regarding the IPAQ, the only HRV index that was positively correlated with physical activity was the SI, while the body composition indices that were positively related were: MCG, PGV and NGV. Conclusion: Obesity was positively associated with levels of stress and sleep disturbance and was negatively associated with physical activity level. In addition, the level of physical activity was negatively associated with SI.