A school-based exercise intervention program increases muscle strength in prepubertal boys.

International Journal of Pediatrics
Susanna Stenevi-LundgrenMagnus K Karlsson

Abstract

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...Continue Reading

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Citations

Oct 5, 2012·Medicine and Science in Sports and Exercise·Magnus TveitMagnus K Karlsson
Jan 24, 2016·European Journal of Applied Physiology·Jesper FritzMagnus K Karlsson
Jul 31, 2012·BMC Pediatrics·Alejandra JáureguiMarcia M Castillo-García
Aug 7, 2012·Asia-Pacific Journal of Public Health·Consuelo B Gonzalez-SuarezRamon Macatangay
Sep 16, 2017·Osteoporosis International : a Journal Established As Result of Cooperation Between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA·S Stenevi LundgrenM K Karlsson
Jan 29, 2021·Pediatric Gastroenterology, Hepatology & Nutrition·Hamdollah IrajiRoya Kelishadi

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