Document Detail


Effect of urbanization on objectively measured physical activity levels, sedentary time, and indices of adiposity in kenyan adolescents.
MedLine Citation:
PMID:  22232497     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
BACKGROUND: Urbanization affects lifestyles in the developing world but no studies have assessed the impact on objectively measured physical activity in children and adolescents from sub-Saharan Africa.
PURPOSE: To compare objectively measured habitual physical activity, sedentary time, and indices of adiposity in adolescents from rural and urban areas of Kenya.
METHODS: Physical activity and sedentary time were assessed by accelerometry for 5 consecutive days in 97 (50 female and 47 male) rural and 103 (52 female and 51 male) urban adolescents (mean age 13 ± 1 years). Body Mass Index (BMI) and BMI z-scores were used to assess adiposity.
RESULTS: Rural males spent more time in moderate-to-vigorous intensity physical activity (MVPA) compared with urban males (68 ± 22 vs. 50 ± 17 min, respectively; P < .001). Similarly, Rural females spent more time in MVPA compared with urban females (62 ± 20 vs. 37 ± 20 min, respectively; P < .001). Furthermore, there were significant differences in daily sedentary time between rural and urban subjects. Residence (rural vs. urban) significantly (P < .001) influenced BMI z-score (R2 = .46).
CONCLUSION: Rural Kenyan adolescents are significantly more physically active (and less sedentary) and have lower indices of adiposity compared with urban adolescents and this is a likely reflection of the impact of urbanization on lifestyle in Kenya.
Authors:
Robert M Ojiambo; Chris Easton; Jose A Casajús; Kenn Konstabel; John J Reilly; Yannis Pitsiladis
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of physical activity & health     Volume:  9     ISSN:  1543-5474     ISO Abbreviation:  J Phys Act Health     Publication Date:  2012 Jan 
Date Detail:
Created Date:  2012-01-10     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101189457     Medline TA:  J Phys Act Health     Country:  United States    
Other Details:
Languages:  eng     Pagination:  115-23     Citation Subset:  IM    
Affiliation:
Faculty of Biomedical and Life Sciences, University of Glasgow, Glasgow, United Kingdom.
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