Metabolic Syndrome Is Associated with Delayed Heart Rate Recovery after Exercise.
10.3346/jkms.2006.21.4.621
- Author:
Jidong SUNG
1
;
Yoon Ho CHOI
;
Jeong Bae PARK
Author Information
1. Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
- Publication Type:Original Article ; Clinical Trial
- Keywords:
Heart Rate;
Heart Rate Recovery;
Metabolic Syndrome X;
Vagal Reactivation
- MeSH:
Walking/physiology;
Smoking;
Sex Factors;
Oxygen Consumption/physiology;
Middle Aged;
Metabolic Syndrome X/blood/*physiopathology;
Male;
Humans;
Heart Rate/*physiology;
Female;
Fasting/blood;
Exercise/*physiology;
Cholesterol, HDL/blood;
Body Mass Index;
Blood Pressure/physiology;
Blood Glucose/metabolism;
Analysis of Variance;
Age Factors;
Adult
- From:Journal of Korean Medical Science
2006;21(4):621-626
- CountryRepublic of Korea
- Language:English
-
Abstract:
Heart rate (HR) recovery after exercise is a function of vagal reactivation, and its impairment is a predictor of overall mortality and adverse cardiovascular events. While metabolic syndrome is associated with sympathetic overactivity, little is known about the relationship between metabolic syndrome and HR recovery. A symptom-limited exercise stress test in healthy subjects (n=1, 434) was used to evaluate HR recovery. Metabolic syndrome was defined according to the National Cholesterol Education Program's Adult Treatment Panel III (NCEP ATP-III) criteria. Seventeen percent of subjects had > or =3 criteria for metabolic syndrome. HR recovery was lower in men than women and in smokers than nonsmokers. The subject with metabolic syndrome (vs. without) showed lower HR recovery (10.3+/-11.6 vs. 13.6+/-9.7 per minute) and higher resting HR (64.3+/-10.3 vs. 61.6+/-9.1 per minute). HR recovery correlated inversely to age (r=-0.25, p<0.0001), but not to resting HR or maximal oxygen uptake. Delayed HR recovery was associated with metabolic syndrome after an adjustment for age, sex, resting HR and smoking (p<0.01). Metabolic syn-drome is associated with impaired vagal reactivation. Adverse cardiovascular out-comes associated with metabolic syndrome may be mediated by the failure of vagal reactivation in addition to sympathetic overactivity.
