Obese and fit adolescents have lower blood pressure levels than obese and unfit counterparts.

TitleObese and fit adolescents have lower blood pressure levels than obese and unfit counterparts.
Publication TypeJournal Article
Year of Publication2012
AuthorsMarcelino, G, Melich-Cerveira, J, Paccaud, F, Marques-Vidal, P
JournalJ Sports Med Phys Fitness
Volume52
Issue6
Pagination639-46
Date Published2012 Dec
ISSN0022-4707
KeywordsAdolescent, Blood Pressure, Blood Pressure Determination, Body Mass Index, Female, Humans, Incidence, Male, Obesity, Odds Ratio, Physical Fitness, Retrospective Studies, Risk Factors, Sex Factors, Switzerland
Abstract

AIM: The aim of the study was to assess the effects of physical fitness on the relationships between body mass index (BMI) and body fat (BF) on blood pressure (BP) levels.

METHODS: Cross-sectional study conducted in 25 schools of Lisbon (Portugal), including 2041 boys and 1995 girls aged 10-18. BF was assessed by bioimpedance. Cardiovascular fitness was assessed by the 20-meter shuttle run and classified as fit/unfit. Obesity (BMI or BF defined) was defined according to international criteria.

RESULTS: In both sexes, BMI was positively related with systolic and diastolic BP, while BF was only positively related with diastolic BP z-scores. No interaction was found between fitness and BMI categories regarding BP levels, while for BF a significant interaction was found. Being fit reduced the BF-induced increase in the Odds ratio (OR) of presenting with high BP: OR (95% confidence interval) 1.01 (0.73-1.40) and 0.99 (0.70-1.38) for overweight and obese fit boys, respectively, the corresponding values for unfit overweight and obese boys being 1.33 (0.94-1.90) and 1.75 (1.34-2.28), respectively. The values were 0.88 (0.57-1.35) and 1.66 (0.98-2.80) for overweight and obese fit girls, respectively, the corresponding values for unfit overweight and obese being 1.63 (1.12-2.37) and 1.90 (1.32-2.73) respectively. No interaction was found between fitness and BMI-defined overweight and obesity.

CONCLUSION: Being fit reduces the negative impact of BF on BP levels and high BP status in adolescents. This protective effect was not found with BMI.

Notes

Publication types: Journal Article

Alternate URL

http://www.ncbi.nlm.nih.gov/pubmed/23187327?dopt=Abstract

Alternate JournalJ Sports Med Phys Fitness
Citation Key / SERVAL ID3348
PubMed ID23187327

                         

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