Comparative study of heart rate variability in obese and normal young adults in medical college
Author(s): Raghav Johari
Abstract: Introduction: Obesity is a condition from which the body has an excess accumulation of fat, which may cause from current daily routines and activities such as overeating and/or lacking of exercise. According to the International Association for the Study of Obesity (IASO), the International Obesity Task Force (IOTF) and the World Health Organization (WHO) proposed, BMI cut-points 23.0 to 24.9 kg/m
2 for being overweight and above 25.0 kg/m
2 for obesity in adult Asians. Nutritional problem in India is shifting from undernourishment to obesity. The autonomic nervous system plays an important role, not only in physiological situations, but also in various pathological settings such as diabetic neuropathy, myocardial infarction and congestive heart failure.
Materials and Method: This study consists of 100 healthy young adults and 100 subjects in the age group of 20-26 years selected from the patient attendants and medical students of Santosh Medical College and Research Centre, Ghaziabad. Anthropometric parameters like height and weight were recorded. Body Mass Index (BMI) was calculated. They were categorized as Cases (n=100) and Controls (n=100) based on the BMI, Controls whose BMI < 25 kg/m2 and Cases with BMI > 30 kg/m2. Subject was explained in detail about the ongoing procedure and ECG was digitally recorded after 10 minutes rest using lead II.
Results: The mean age of the controls and cases were 22.16 and 21.82 respectively. Our study results showed significant inverse relationship between BMI and HRV parameters like SDNN, E/I ratio and HF nu, but at the same it showed significant positive relation of BMI and LF nu, LF/HF.
Discussion: This study is a novel part of the on-going long-term epidemiological Cardiovascular Risk in Young Finns study. Many studies into lifetime cardiovascular risk profiles in this study population have been reported previously. In 2003, Raitakari et al. demonstrated that cardio metabolic risk profile assessed in 12-year to 18-year-old adolescents predicts adult carotid artery intima-media thickness (cIMT) independently of contemporaneous risk factors. This study is an effort to assess the effect of obesity on cardiac autonomic activity using Heart Rate Variability in young adults as sudden cardiac death in later ages can be prevented if life style modifications can be brought in earlier.
Conclusion: The present findings demonstrate decreased HRV is associated with age, male gender and increased heart rate. Women have higher HF variability and lower LF variability than men, higher sympathetic and lower parasympathetic nerve activity in obese subjects. The results show that the HRV is decreased in overweight young adults especially men indicating sympathovagal imbalance. Changes in the autonomic nervous activity begin in the overweight and may become more prominent in the obese thus indicating increased cardiovascular risk. HRV indices were significantly associated with obesity indices.
DOI: 10.22271/27069567.2019.v1.i1a.419Pages: 84-87 | Views: 327 | Downloads: 130Download Full Article: Click HereHow to cite this article:
Raghav Johari.
Comparative study of heart rate variability in obese and normal young adults in medical college. Int J Adv Res Med 2019;1(1):84-87. DOI:
10.22271/27069567.2019.v1.i1a.419
