Thong Q. Nguyen

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BACKGROUND The association between physical activity (PA) and ambulatory blood pressure (ABP) is documented in adults. This association and factors that may modify it, such as obesity, have not been reported in adolescents. The aims of this study were to determine the association of PA with ABP in 11- to 16-year-old adolescents, and to examine the modifying(More)
OBJECTIVES (1) Determine the prevalence of overweight and high blood pressure (BP) among middle and high school students over a 2-year period and, (2) measure the cost and initial outcomes of screening. DESIGN Cost and outcome description using a cross-sectional design sample. The target population was 12- to 19-year-old healthy students attending grades(More)
BACKGROUND Evidence is accumulating that sleep duration is related to blood pressure (BP) and hypertensive status, but the strength of the association varies by age, and findings are inconsistent for adolescents. This cross-sectional study tested the hypothesis that sleep duration, both during the night and during naps, would be negatively associated with(More)
The purpose of this study of school-age children was to estimate prevalence and interrelationships of overweight, central adiposity, and hypertension. It included 1,070 children in kindergarten through sixth grade (67% Hispanic, 26% African American, mean age = 8.9 years). Measures included body mass index (BMI), waist circumference (WC), systolic and/or(More)
Microscopic analyses of paper printing show some regularly spaced dots whose the shape depends on the technology and the tuning of the printer as well as on the paper properties. The modeling and the identification of paper and ink interactions are required for qualifying the printing quality, for controlling the printing process and also for authentication(More)
OBJECTIVES We investigated the relationships among environmental features of physical activity friendliness, socioeconomic indicators, and prevalence of obesity (BMI status), central adiposity (waist circumference, waist-height ratio), and hypertension. DESIGN AND SAMPLE The design was cross-sectional; the study was correlational. The sample was 911(More)
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