Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/48279
Title: High femoral bone mineral density accretion in prepubertal soccer players
Authors: Vicente-Rodriguez, German
Ara, Ignacio
Perez-Gomez, Jorge
Serrano-Sanchez, JA 
Dorado, C 
Calbet, JAL 
Keywords: Physical-Activity
Mass
Children
Gymnasts
Growth, et al
Issue Date: 2004
Publisher: 0195-9131
Journal: Medicine and Science in Sports and Exercise 
Abstract: Purpose: To determine the effect of physical activity on bone mineral accrual during growth in prepuberal boys. Methods: Seventeen soccer players and 11 matched (physically active) control boys (Tanner 1-2, at the start of the study) were followed over a 3-yr period. Bone mineral content (BMC) and areal density (BMD) was measured by dual-energy x-ray absorptiometry. The maximal positive mechanical impulse (CJipos) and height jumped (Hj) during countermovement vertical jumps were assessed with a plate force. Additionally, 30-m running speed test (T-30), 300-m run test (AC), and 20-m shuttle run test (MAP) were performed. Results: The soccer players attained better results in MAP and AC than the controls (P < 0.05). At the end of the follow-up, the controls increased their percentage of body fat in I I units (P < 0.05) whereas it remained unchanged in the soccer players. Lean body mass increased with growth but more in the soccer players than in the controls (P < 0.05). The soccer players exhibited greater BMC in the legs and greater BMD in all bone-loaded regions at the end of the study (P < 0.05). During these 3 yr, the soccer players gained twice as much femoral neck and intertrochanteric BMC than the control group (P < 0.05) and increased their femoral neck BMD by 10% and their mean hip BMD by a third more than the control group (both P < 0.05). Multiple regression analysis showed that the improvement in T-30 and CJipos has predictive value for the enhancement of bone mass in growing boys. Conclusion: Long-term soccer participation, starting at a prepubertal age, results in greater improvement of physical fitness, greater acquisition of bone mass and,a lower accumulation of body fat.
URI: http://hdl.handle.net/10553/48279
ISSN: 0195-9131
DOI: 10.1249/01.MSS.0000142311.75866.D7
Source: Medicine And Science In Sports And Exercise[ISSN 0195-9131],v. 36 (10), p. 1789-1795
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