Document Detail

A school-based exercise intervention program increases muscle strength in prepubertal boys.
MedLine Citation:
PMID:  20652076     Owner:  NLM     Status:  In-Data-Review    
This prospective controlled intervention study over 12 months evaluated the effect of exercise on muscular function, physical ability, and body composition in pre-pubertal boys. Sixty-eight boys aged 6-8 years, involved in a general school-based exercise program of 40 min per school day (200 min/week), were compared with 46 age-matched boys who participated in the general Swedish physical education curriculum of mean 60 min/week. Baseline and annual changes of body composition were measured by dual energy X-ray absorptiometry (DXA), stature, and body mass by standard equipments, isokinetic peak torque (PT) of the knee extensors, and flexors at 60 and 180 deg/sec by computerized dynamometer (Biodex) and vertical jump height (VJH) by a computerized electronic mat. The annual gain in stature and body mass was similar between the groups whereas the increase in total body and regional lean mass (P < .001) and fat mass (P < .001) was greater in the exercise group. The one-year gain in body mass-adjusted knee extensor and flexor PT at 180 deg/sec was significantly greater in the intervention group compared with the control group (P < .01, adjusted for age at baseline and P < .001, adjusted for age and muscle strength at baseline, resp.). There was no group difference in VJH. In conclusion, the increase in school-based physical education from 60 to 200 minutes per week enhances the development of lean body mass and muscle strength in pre-pubertal boys.
Susanna Stenevi-Lundgren; Robin M Daly; Magnus K Karlsson
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Publication Detail:
Type:  Journal Article     Date:  2010-06-22
Journal Detail:
Title:  International journal of pediatrics     Volume:  2010     ISSN:  1687-9759     ISO Abbreviation:  Int J Pediatr     Publication Date:  2010  
Date Detail:
Created Date:  2010-07-23     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101517077     Medline TA:  Int J Pediatr     Country:  Egypt    
Other Details:
Languages:  eng     Pagination:  307063     Citation Subset:  -    
Clinical and Molecular Osteoporosis Research Unit, Department of Clinical Sciences, Lund University, 22100 Lund, Sweden.
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