Obesity Impact Evaluated from Fat Percentage in Bone Mineral Density of Male Adolescents.
OBJECTIVE
To analyze bone mineral density (BMD) values in adolescents and to assess obesity impact, measured through body fat #x2013;on this variable through the assessment by DEXA.


METHODS
A total of 318 males adolescents (12-17 years) were evaluated considering weight, height, body mass index (BMI), bone mineral density (BMD), fat and lean mass. BMD was assessed for the arms, legs, hips, and lumbar regions, as well as for total amount. Stratification of the nutritional status was determined by body fat (%BF) percentage; comparison of groups was scrutinized by analysis of variance; and the association of variables was performed using Pearson's test.


RESULTS
There was a progressive increase in weight, height, and BMD for all evaluated age groups following the advance of chronological age. A negative correlation was found between the %BF with BMD in all evaluated segments. Significant differences were found between the eutrophic group compared to the overweight group and the obesity group in the evaluated segments (P <0.01) noting a reduction of up to 12.92% for the lumbar region between eutrophic and obese.


CONCLUSIONS
The results suggest that increase %BF is associated with lower BMD among male adolescents.
Graduate Program in Electrical Engineering and Computer Science, Federal University of Technology-Paraná, Curitiba, Brazil.
Wagner Luis
WL
Ripka
Graduate Program in Biomedical Engineering, Federal University of Technology-Paraná, Curitiba, Brazil.
Jhomyr Dias
JD
Modesto
Graduate Program in Biomedical Engineering, Federal University of Technology-Paraná, Curitiba, Brazil.
Leandra
L
Ulbricht
Graduate Program in Electrical Engineering and Computer Science, Federal University of Technology-Paraná, Curitiba, Brazil.
Pedro Miguel
PM
Gewehr
Bone. 2003 May;32(5):532-40
12753869
J Pediatr. 2013 Jul;163(1):137-42
23434121
J Orthop Surg Res. 2011 Jun 15;6:30
21676245
J Pediatr. 2014 Jun;164(6):1280-5.e2
24485819
J Clin Densitom. 2003 Summer;6(2):75-85
12794229
J Clin Endocrinol Metab. 1999 Dec;84(12):4702-12
10599739
Dis Markers. 2013;35(6):753-64
24347796
Nutrition. 2014 Jul-Aug;30(7-8):847-52
24985003
Nutrients. 2013 Jun 06;5(6):2047-61
23743968
Rev Paul Pediatr. 2016 Jun;34(2):210-5
27017002
J Pediatr. 2011 May;158(5):727-34
21232765
Int J Endocrinol Metab. 2015 Jul 01;13(3):e25542
26401143
Am J Clin Nutr. 2004 Aug;80(2):514-23
15277178
Am J Clin Nutr. 2010 Nov;92(5):1257-64
20861173
Pediatrics. 2013 Feb;131(2):364-82
23359574
PLoS One. 2012;7(7):e40090
22768331
Int J Environ Res Public Health. 2016 May 28;13(6):
27240395
J Pediatr (Rio J). 2004 Nov-Dec;80(6):461-7
15622422
Rev Assoc Med Bras (1992). 2013 Sep-Oct;59(5):475-86
24119380