Cardiovascular risk factors in adolescents with different levels of energy expenditure.
BACKGROUND
Physical inactivity in adolescence is related to body fat accumulation, which apparently can increase the probability of onset and development of metabolic changes.


OBJECTIVE
To verify the predisposition to cardiovascular risk factors in adolescents with different levels of energy expenditure.


METHODS
A total of 108 young men and 132 young women aged between 12 and 16 years were selected. Daily energy expenditure was obtained using the questionnaire proposed by Bouchard et al. The sample was previously divided according to the quartiles of energy expenditure (Kcal/kg/day) into three groups: sedentary (SG), moderately active (MG), and active (AG). The enzyme-colorimetric method was used to determine the total cholesterol (TC), HDL-C, and triglycerides (TG) levels. LDL-C was calculated using the Friedewald et al's formula. The one-factor analysis of variance was used for statistical analysis, considering p<0.05.


RESULTS
For the male gender, significant differences were found between the groups for the TC variable (mg/dl); AG (121.56+/-19.15) was different from MG (142.70+/-27.65) and from SG (145.63+/-36.54). Likewise, MG was different from SG (F=3.70 and p=0.03). For the TG variable (mg/dl), AG (65.69+/-18.95) was different from MG (82.25+/-33.73) and from SG (97.44+/-45.95). Also, MG was different from SG (F=3.40 and p=0.04). For the female gender, no significant differences were found in relation to daily energy expenditure.


CONCLUSIONS
More active young men show lower TC and TG levels in comparison with their moderately active and sedentary peers.
Vasconcelos
Italo Quenni Araujo de
IQ
Universidade Federal do Paraná, Curitiba, PR, Brasil. italo@ufpr.br
Stabelini Neto
Antonio
A
Mascarenhas
Luís Paulo Gomes
LP
Bozza
Rodrigo
R
Ulbrich
Anderson Zampier
AZ
Campos
Wagner de
Wd
Bertin
Renata Labronici
RL
D000293:Adolescent / Q000502:physiology*; D000886:Anthropometry; D001938:Brazil / Q000453:epidemiology; D002318:Cardiovascular Diseases / Q000097:blood / Q000175:diagnosis / Q000453:epidemiology / Q000209:etiology*; D004734:Energy Metabolism / Q000502:physiology*; D015444:Exercise / Q000502:physiology; D005260:Female; D006801:Humans; D008055:Lipids / Q000097:blood; D008297:Male; D012146:Rest / Q000502:physiology; D012307:Risk Factors; D017678:Sex Distribution; D012890:Sleep / Q000502:physiology; D011795:Surveys and Questionnaires
D008055:Lipids