Thursday-Abstracts

Official Journal of the American College of Sports Medicine
percentage of girls meet the HFZ for BC. With AC and BC for both boys and girls,
among those students in the needs improvement categories, the majority of
individuals were considered high risk. The prevalences of needing improvement
in AC and BC are important considering the impact of childhood health-related
fitness on risk of chronic disease and mortality in adulthood.
1188 Board #133 May 30, 8:00 AM - 9:30 AM
relationship between Waist Circumference and Body Mass
Index in Chinese Children and adolescents
Xiao Jian Yin 1 , Chen Ye Ji 2 , Liu Ji 3 , Qiang Guo 3 , Shi chang
Li 3 , Sadayoshi Taguchi, FACSM 4 , Toyoho Tanaka 5 . 1 Key
Laboratory of Adolescent Health Assessment and Exercise
Intervention, Ministry of Education,East China Normal
University, Shang Hai, China. 2 Institute of Child and Adolescent
Health, Peking University Health Science Center, Beijing,
China. 3 Key Laboratory of Adolescent Health Assessment
and Exercise Intervention, Ministry of Education, Shang
Hai, China. 4 Graduate School of Sport and Health Science,
Ritsumeikan University, Kusatsu, Japan. 5 School of Health and
Sports Sciences, Chukyo University, Toyota, Japan. (Sponsor:
Sadayoshi Taguchi, FACSM)
(No relationships reported)
PurPOsE: To study the distribution of normal WC and provide a reference for
the screening criteria of overweight and obesity in Chinese children and adolescent
utilizing the BMI criteria for children and adolescents developed by WGOC (The
Working Group on Obesity in China) as a standard.
METhOds: 146,306 Han primary and middle school students aged 7-18 years old
from 15 provinces or cities monitored by National Student Physical Health Survey
in 2008 were recruited as subjects. Using BMI criteria for children and adolescents
developed by The WGOC as the reference, the WC cutoff points of overweight and
obesity in children and adolescents were analyzed with ROC curve (Receiver Operator
Characteristic Curve).
rEsuLTs: The correlation coefficients between BMI and WC were generally beyond
0.8 for boys, and were beyond 0.7 for girls (except 7-year-old girls); For overweight
category, WC cutoff point of 7-12 years boys were mainly at the 70th percentile
(WC :57.0-69.0cm), for13-18 years were at the 75th percentile(71.5-77.0cm) ,
the sensitivities and the specificities were between 0.808-0.922 and 0.824-0.912,
respectively. WC cutoff point of 7-8 years girls were mainly at the 75th percentile
(56.3-58.1cm), and 9-18 years at the 80th percentile (61.5-72.4cm), the sensitivities
and the specificities were between 0.770-0.905 and 0.811-0.983, respectively.
For obesity category, WC cutoff point of 7-12 years boys were mainly at the 85th
percentile (60.0-73.8cm), for 13-18 years at the 90th percentile (78.8-82.1cm),
the sensitivities and the specificities were between 0.872-0.937 and 0.868-0.943,
respectively. WC cutoff point of 7-10 years girls were mainly at the 85th percentile
(59.1-65.3cm), and 11-18 years at the 90th percentile (70.1-76.5cm), the sensitivities
and the specificities were between 0.789-0.936 and 0.881-0.932, respectively.
CONCLusIONs: For overweight category, The WC cutoff points were proposed at
the 70th percentile for 7-12 yrs boys, 75th for 13-18 yrs. The girls were proposed at
the 75th percentile for 7-8 yrs, 80th for 9-18 yrs. For obesity category, The WC cutoff
points before the puberty were proposed at the 85th percentile, and after the puberty
(boys of 13 years old, girls of 11 years old in China) at the 90th percentile.
1189 Board #134 May 30, 8:00 AM - 9:30 AM
Continuous Metabolic syndrome risk score and Time
Expended In Moderate To Vigorous Physical activity In
adolescents
Wagner De Campos1 , Antonio Stabelini Neto2 , Géssika
Castilho dos Santos3 , Sergio G. da Silva1 , Oldemar Mazzardo
Jr. 1 . 1Universidade Federal do Paraná, Curitiba, Pr, Brazil.
2Universidade Estadual do Norte do Paraná, Jacarézinho, Pr,
Brazil. 3Universidade Estadual do Norte do Paraná, Curitiba,
Pr, Brazil. (Sponsor: Carlo Baldari, FACSM)
(No relationships reported)
PurPOsE: To associate the continuous risk score for metabolic syndrome with time
spent engaging in moderate to vigorous physical activity (MVPA) among adolescents.
METhOds: The study involved 391 participants, aged 10 to 18 years. Physical
activity was measured by accelerometry. The counts obtained in the different activities
were transformed into metabolic equivalents (METs) and classified as light (≥ 1.5 but <
3.0 METs), moderate (≥ 3.0 but < 6.0 METs) and vigorous (≥ 6.0 METs) activities. The
continuous risk score for metabolic syndrome was calculated using the following risk
factors: waist circumference, blood pressure, blood glucose, HDL-C and triglycerides.
The statistical analyses used were the t-test, Pearson correlation, ANOVA and ROC
curve.
rEsuLTs: Time spent in MVPA was inversely associated with the continuous risk
Vol. 45 No. 5 Supplement S225
score for metabolic syndrome (p 20.2 kg/m 2 in 6 th graders and BMI>23.4 kg/m 2 in 10 th graders). After four years
of implementation of the CSHEC, BMI was assessed in the then 10 th grade males,
and respectively, in the study and control groups 41.5% and 70.6% were categorized
as either overweight or obese. To analyze the data, BMI values were converted to
percentile rankings (consistent with CDC BMI-for-age-guidelines) and a statistical
t-test (p