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141
79. Gordon-Larsen P, Adair LS, and Popkin BM. Ethnic differences in physical activity
and inactivity patterns and overweight status. Obesity Research 10: 141-149, 2002.
80. Gordon-Larsen P, McMurray RG, and Popkin BM. Adolescent physical activity and
inactivity vary by ethnicity: The National Longitudinal Study of Adolescent Health.
Journal of Pediatrics 135: 301-306, 1999.
81. Gortmaker SL, Peterson K, Wiecha J, Sobol AM, Dixit S, Fox MK, and Laird N.
Reducing obesity via a school-based interdisciplinary intervention among youth: Planet
Health. Arch Pediatr Adolesc Med 153: 409-418, 1999.
82. Grundy SM. A constellation of complications: the metabolic syndrome. Clin
Cornerstone 7: 36-45, 2005.
83. Grundy SM. Obesity, metabolic syndrome, and cardiovascular disease. J Clin
Endocrinol Metab 89: 2595-2600, 2004.
84. Ham SA, Reis JP, Strath SJ, Dubose KD, and Ainsworth BE. Discrepancies between
methods of identifying objectively determined physical activity. Med Sci Sports Exerc 39:
52-58, 2007.
85. Hawkes C. Agro-food industry growth and obesity in China: what role for regulating
food advertising and promotion and nutrition labelling? Obes Rev 9: 151-161, 2008.
86. Hayden-Wade HA, Stein RI, Ghaderi A, Saelens BE, Zabinski MF, and Wilfley DE.
Prevalence, characteristics, and correlates of teasing experiences among overweight
children vs. non-overweight peers. Obes Res 13: 1381-1392, 2005.
87. Hickman TB BR, Carroll MD, Rifkind BM, Cleeman JI, Maurer, and KR JC.
Distributions and trends of serum lipid levels among United States children and
adolescents ages 4-19 years: Data from the Third National Health and Nutrition
Examination Survey. Prev Med 27: 879-890, 1998.
Object Description
| Title | The vicious cycle of inactivity, obesity, and metabolic health consequences in at-risk pediatric populations |
| Author | Hsu, Ya-Wen |
| Author email | ywxxbirdy@yahoo.com; yawenhsu@usc.edu |
| Degree | Doctor of Philosophy |
| Document type | Dissertation |
| Degree program | Preventive Medicine (Health Behavior) |
| School | Keck School of Medicine |
| Date defended/completed | 2011-03-09 |
| Date submitted | 2011 |
| Restricted until | Restricted until 26 Apr. 2012. |
| Date published | 2012-04-26 |
| Advisor (committee chair) |
Chou, Chih-Ping Spruijt-Metz, Donna |
| Advisor (committee member) |
Unger, Jennifer B. Azen, Stanley Paul Palinkas, Lawrence A. |
| Abstract | PURPOSE: This dissertation examined the associations between physical activity, sedentary behavior, overweight, and the metabolic syndrome (MetS) in at-risk pediatric populations in the United States and in China. Study 1 identified the independent influences of physical activity, sedentary behavior, and other weight-related correlates on overweight status in Chinese youth. Study 2 explored the influences of physical activity and sedentary behavior on MetS in US minority youth. Study 3 compared the longitudinal trends of physical activity and sedentary behavior between youth with and without MetS in a sample of US minority female youth.; METHODS: Participants were youth (ages 8-18 years) in the United States and in China. Study 1 used baseline data from of a longitudinal smoking prevention and health promotion study conducted in the 7 large cities in China for Chinese youth ages 11-18 years. Study 2 used baseline data from three related pediatric obesity studies that share a set of common methods and measures (US Latino and African American youth ages 8-18 years). Data for Study 3 are from a longitudinal, observation study for Latina and African American female youth ages 8-11 years at baseline.; RESULTS: In Study 1, Chinese youth were more likely to be overweight if they spent more time being sedentary, slept <7 hours/night, were male, were younger, participated more in vigorous physical activity, had higher levels of parental education, better self-perceived health status, a higher frequency of vegetable intake, and a lower frequency of sweet/fast food intake. In Study 2, lower levels of moderate-to-vigorous physical activity (by accelerometry) and higher levels of sedentary behavior (by 3-day physical activity recall) are associated with increased the metabolic risk independent of each other and body composition. In Study 3, a significant decline in MVPA and an increase in sedentary behavior were observed over one year. Sedentary behavior as measured by accelerometry increased 23.42 minutes/per quarterly visit, adding up to 93.68 minutes/per year more in youth with MetS than in those without.; CONCLUSION: Overweight-related correlates seem to play different roles in the Chinese culture than in Western cultures. Findings from this dissertation support a vicious cycle of increasing inactivity, obesity, and metabolic complications. These findings, coupled with longitudinal evidence of the effects of activity levels on obesity and MetS, suggests that physical activity and sedentary behavior could function as antecedents as well as consequences of overweight or MetS in youth. |
| Keyword | Chinese youth; metabolic syndrome; minority youth; obesity; physical activity; sedentary behavior |
| Geographic subject (country) | USA; China |
| Coverage date | 1970/2010 |
| Language | English |
| Part of collection | University of Southern California dissertations and theses |
| Publisher (of the original version) | University of Southern California |
| Place of publication (of the original version) | Los Angeles, California |
| Publisher (of the digital version) | University of Southern California. Libraries |
| Provenance | Electronically uploaded by the author |
| Type | texts |
| Legacy record ID | usctheses-m3779 |
| Contributing entity | University of Southern California |
| Rights | Hsu, Ya-Wen |
| Repository name | Libraries, University of Southern California |
| Repository address | Los Angeles, California |
| Repository email | cisadmin@lib.usc.edu |
| Filename | etd-Hsu-4455 |
| Archival file | uscthesesreloadpub_Volume23/etd-Hsu-4455.pdf |
Description
| Title | Page 152 |
| Contributing entity | University of Southern California |
| Repository email | cisadmin@lib.usc.edu |
| Full text | 141 79. Gordon-Larsen P, Adair LS, and Popkin BM. Ethnic differences in physical activity and inactivity patterns and overweight status. Obesity Research 10: 141-149, 2002. 80. Gordon-Larsen P, McMurray RG, and Popkin BM. Adolescent physical activity and inactivity vary by ethnicity: The National Longitudinal Study of Adolescent Health. Journal of Pediatrics 135: 301-306, 1999. 81. Gortmaker SL, Peterson K, Wiecha J, Sobol AM, Dixit S, Fox MK, and Laird N. Reducing obesity via a school-based interdisciplinary intervention among youth: Planet Health. Arch Pediatr Adolesc Med 153: 409-418, 1999. 82. Grundy SM. A constellation of complications: the metabolic syndrome. Clin Cornerstone 7: 36-45, 2005. 83. Grundy SM. Obesity, metabolic syndrome, and cardiovascular disease. J Clin Endocrinol Metab 89: 2595-2600, 2004. 84. Ham SA, Reis JP, Strath SJ, Dubose KD, and Ainsworth BE. Discrepancies between methods of identifying objectively determined physical activity. Med Sci Sports Exerc 39: 52-58, 2007. 85. Hawkes C. Agro-food industry growth and obesity in China: what role for regulating food advertising and promotion and nutrition labelling? Obes Rev 9: 151-161, 2008. 86. Hayden-Wade HA, Stein RI, Ghaderi A, Saelens BE, Zabinski MF, and Wilfley DE. Prevalence, characteristics, and correlates of teasing experiences among overweight children vs. non-overweight peers. Obes Res 13: 1381-1392, 2005. 87. Hickman TB BR, Carroll MD, Rifkind BM, Cleeman JI, Maurer, and KR JC. Distributions and trends of serum lipid levels among United States children and adolescents ages 4-19 years: Data from the Third National Health and Nutrition Examination Survey. Prev Med 27: 879-890, 1998. |
