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Logo of bmcpediBioMed Centralsearchsubmit a manuscriptregisterthis articleBMC Pediatrics
 
BMC Pediatr. 2012; 12: 5.
Published online Jan 12, 2012. doi:  10.1186/1471-2431-12-5
PMCID: PMC3271987
Resting heart rate as a predictor of metabolic dysfunctions in obese children and adolescents
Ismael F Freitas Júnior,1 Paula A Monteiro,2 Loreana S Silveira,2 Suziane U Cayres,1 Bárbara M Antunes,1 Karolynne N Bastos,2 Jamile S Codogno,3 João Paulo J Sabino,4 and Rômulo A Fernandescorresponding author1
1Department of Physical Education. UNESP Univ Estadual Paulista, Presidente Prudente, SP, Brazil
2Department of Physical Therapy. UNESP Univ Estadual Paulista, Presidente Prudente, SP, Brazil
3Department of Physical Education. UNESP Univ Estadual Paulista, Rio Claro, SP, Brazil
4Department of Physiology, School of Medicine of Ribeirão Preto, USP Univ of São Paulo, SP, Brazil
corresponding authorCorresponding author.
Ismael F Freitas Júnior: ismael/at/fct.unesp.br; Paula A Monteiro: paulinha_1003/at/hotmail.com; Loreana S Silveira: loreana_loly/at/hotmail.com; Suziane U Cayres: suziungari/at/yahoo.com.br; Bárbara M Antunes: bah_tunes/at/hotmail.com; Karolynne N Bastos: karolynevoley/at/yahoo.com.br; Jamile S Codogno: jamile_sc/at/yahoo.com.br; João Paulo J Sabino: jpsabino/at/rfi.fmrp.usp.br; Rômulo A Fernandes: romulo_ef/at/yahoo.com.br
Received July 24, 2011; Accepted January 12, 2012.
Abstract
Background
Recent studies have identified that a higher resting heart rate (RHR) is associated with elevated blood pressure, independent of body fatness, age and ethnicity. However, it is still unclear whether RHR can also be applied as a screening for other risk factors, such as hyperglycemia and dyslipidemia. Thus, the purpose of the presented study was to analyze the association between RHR, lipid profile and fasting glucose in obese children and adolescents.
Methods
The sample was composed of 180 obese children and adolescents, aged between 7-16 years. Whole-body and segmental body composition were estimated by Dual-energy X-ray absorptiometry. Resting heart rate (RHR) was measured by heart rate monitors. The fasting blood samples were analyzed for serum triglycerides, total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), and glucose, using the colorimetric method.
Results
Fasting glucose, TC, triglycerides, HDL-C, LDL-C and RHR were similar in both genders. The group of obese subjects with a higher RHR presented, at a lower age, higher triglycerides and TC. There was a significant relationship between RHR, triglycerides and TC. In the multivariate model, triglycerides and TC maintained a significant relationship with RHR independent of age, gender, general and trunk adiposity. The ROC curve indicated that RHR has a high potential for screening elevated total cholesterol and triglycerides as well as dyslipidemia.
Conclusion
Elevated RHR has the potential to identify subjects at an increased risk of atherosclerosis development.
Keywords: Obesity, child, adolescent, metabolic dysfunctions, resting heart rate
Les articles de BMC Pediatrics ont été offerts à titre gracieux par
BioMed Central.