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Association between physical activity and blood pressure in prepubertal children.
MedLine Citation:
PMID:  21525949     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Elevated blood pressure (BP) during childhood and adolescence increases the risk of hypertension in later life. Although physical activity is known to positively moderate BP, data regarding this relationship are limited in prepubertal children. We aimed to assess the association between a range of physical activities (including indoor and outdoor activity) and BP in a large community-based sample of prepubertal schoolchildren. Eligible year-1 schoolchildren (n=1765; mean age 6.7±0.4 years) from a random cluster sample of 34 schools in Sydney, Australia, were examined. Parents completed detailed questionnaires about their child's activity. Height and weight were measured, and body mass index (BMI) was calculated. BP was measured using a standard protocol, and elevated BP was defined using published guidelines. Physical activity was classified as low, medium or high (that is, as tertiles). After adjusting for age, sex, ethnicity, height, BMI, parental qualifications and family history of hypertension and/or cardiovascular disease, children in the highest tertile of outdoor and indoor activities had significantly lower diastolic BP (∼1.5 mm Hg; P(trend)=0.01) and systolic BP (∼1.3 mm Hg; P(trend)=0.03), respectively, compared with those in the lowest tertile (reference). Linearly, time spent in indoor activities (each hour per day) was associated with ∼2.4 mm Hg decrease in diastolic BP (P=0.001). Physical activity was independently associated with lower BP in this sample of prepubertal children. The findings emphasize the importance of ensuring regular physical activity programs in primary schools to potentially reduce the risk of elevated BP in childhood and in later life.Hypertension Research advance online publication, 28 April 2011; 10.1038/hr.2011.46.
Authors:
Bamini Gopinath; Louise L Hardy; Erdahl Teber; Paul Mitchell
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-4-28
Journal Detail:
Title:  Hypertension research : official journal of the Japanese Society of Hypertension     Volume:  -     ISSN:  1348-4214     ISO Abbreviation:  -     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-4-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9307690     Medline TA:  Hypertens Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
1] Centre for Vision Research, Department of Ophthalmology and Westmead Millennium Institute, University of Sydney, Westmead Hospital, Sydney, New South Wales, Australia [2] Menzies Centre for Health Policy, University of Sydney, Sydney, New South Wales, Australia.
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