EXAMINING THE DIFFERENCES IN HEART RATES BETWEEN YOUNG CHILDREN WHO ARE OVERWEIGHT AND UNDERWEIGHT

Abstract

Background: Excessive adipose tissue mass is referred to as obesity, and it is typically measured by body mass index, or 
BMI. The autonomic nerve system is essential for controlling energy expenditure and body fat percentage. One test used to 
evaluate the impact of autonomic control on the heart is heart rate variability, or HRV.  
Aim: The purpose of this study was to evaluate the heart rate variability of young volunteers who were overweight (BMI >25 
kg/m2) and underweight (BMI <18 kg/m2), respectively.  
Methods: In order to measure changes in heart rate variability in young people as determined by body weight, the current 
study comprised participants ages 18 to 25. Anthropometric measures including blood pressure, resting pulse rate, and 5
minute supine heart rate variability were measured in each participant from both groups. In two groups, the effects of body 
weight on heart rate variability were assessed and contrasted.  
Results: Compared to the underweight group, the overweight group's subjects had significantly lower levels of the following: 
TP (total power), SDNN (standard deviation of NN interval), HF (high frequency), RMSSD (square root of mean squared 
difference of successive NN interval), and LFnu. The study's findings also revealed a noteworthy inverse relationship between 
the two study groups' HFnu, LFnu, and RP (resting pulse). 
Conclusions: The present study concludes an autonomic dysfunction characterized by a decrease of parasympathetic and 
increased sympathetic activity in overweight group subjects that can result in early heart-related complications.