Korean J Biol Psychiatry.  2008 Aug;15(3):186-193.

Characteristics of Heart Rate Variability Among Adults with Metabolic Syndrome

Affiliations
  • 1Department of Neuropsychiatry and Stress Research Institute, Seoul Paik Hospital, Inje Univiersity School of Medicine, Seoul, Korea. jongmin.woo@gmail.com
  • 2Department of Occupational Medicine, College of Medicnie, Dong-A University, Busan, Korea.
  • 3Department of Preventive and Occupational Medicine, Pusan University School of Medicine, Busan, Korea.
  • 4Worker Health Protection Division, Occupational Safety and Health Bureau, Ministry of Labor, Gwacheon, Korea.
  • 5Department of Family Medicine, Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea.

Abstract


OBJECTIVES
The authors tried to investigate the characteristics of Heart Rate Variability(HRV) among the subjects with metabolic syndrome for testing the possibility of clinical application of HRV in evaluating metabolic syndrome.
METHODS
We examined the difference of the means of HRV between 122 subjects of metabolic syndrome and 1057 healthy controls using T-test, and the change of means in HRV according to increasing risk factors of metabolic syndrome. Using multiple regression analysis, we examined the association of HRV with the risk factors of metabolic syndrome.
RESULTS
The HRV indices including SDNN(Standard Deviation of all normal NN intervals), RMSSD(the square Root of the Mean Squared Differences of successive all normal NN interval), TP(Total Power), LF(Low Freuency), and HF(High Frequency) were significantly lower in the metabolic syndrome group than in the normal control group, and the means of all HRV indices except LF/HF were decreased consistently according to increasing risk factors of metabolic syndrome. The fasting glucose, triglyceride, and waist circumference were dependent factors that contributed significantly to the change of HRV.
CONCLUSION
These findings suggest metabolic syndrome adversely affects cardiac autonomic system and HRV could be a useful method for evaluating metabolic syndrome.

Keyword

Metabolic syndrome; HRV(Heart rate variability); Autonomic system

MeSH Terms

Adult
Fasting
Glucose
Heart
Heart Rate
Humans
Risk Factors
Waist Circumference
Glucose
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