RELATIONSHIP OF THE AUTONOMIC NERVOUS SYSTEM WITH SLEEP QUALITY, PHYSICAL ACTIVITY, AND DEPRESSION IN 18-25 YEARS OLD HEALTHY UNIVERSITY STUDENTS

Background
The autonomic nervous system regulates cardiovascular response in animals and humans during physical activity. This study aimed to explore the relationship between the autonomic nervous system and factors such as sleep quality, physical activity, and depression in healthy young individuals aged 18 to 25.

Material and methods
Demographic data of the participants (age, height, body weight, education level, exercise, and smoking habits) were recorded in the demographic data form. The sleep quality of the participants was measured using the Pittsburgh Sleep Quality Index and their depression levels were determined through the Beck Depression Inventory. Evaluation of the autonomic nervous system of the participants was performed using the Elite HRV Corsense device, which is based on the observation of RR waves that are also present during the resting state.

Results
A moderately negative and statistically significant correlation was found between the LF/HF ratio and the total scores of the Beck Depression Inventory (r=-0.352; p=0.014). The correlation between the average heart rate sub-parameter and the total scores of the Beck Depression Inventory was found to be moderately positive and statistically significant (r=0.362; p=0.011).

Conclusions
The study, along with the reviewed literature, highlights the relationship between depression and the autonomic nervous system at various levels. Depression causes alterations in the body's autonomic control mechanisms.