TY - JOUR
T1 - Quantitative ultrasound of the tibia and radius in prepubertal and early-pubertal female athletes
AU - Falk, Bareket
AU - Bronshtein, Zohar
AU - Zigel, Levana
AU - Constantini, Naama W.
AU - Eliakim, Alon
PY - 2003/2/1
Y1 - 2003/2/1
N2 - Background: Physical exercise during childhood has been shown to enhance bone mineral density, thus reducing the risk of osteoporosis. Objective: To examine bone properties, as measured by quantitative ultrasound, in prepubertal and early-pubertal female athletes engaged in impact and non-impact sports. Design: Survey. Setting: General community. Participants: Twenty-five acrobatic gymnasts, 21 swimmers, and 21 control subjects. Athletes had been training for at least 1 1/2 years. Main Outcome Measure: Bone speed of sound (bilateral) at the distal radius and the midtibia. Results: Gymnasts were significantly shorter and lighter than swimmers and control girls (P <. 001) but had a body mass index similar to that of swimmers. Adiposity was lower in athletes than in controls. Speed of sound did not correlate with measures of body size. Higher mean ± SD radial speed of sound values (nondominant side) were observed in gymnasts (3764 ± 104 m/s; P = .045) than in swimmers and control girls (3732 ± 99 and 3721 ± 83 m/s, respectively). Mean ± SD tibial speed of sound values (non-dominant side) were similar in gymnasts and swimmers (3629 ± 87 and 3619 ± 78 m/s, respectively) and higher in the athletic groups than in the control group (3516 ± 127 m/s; P < .001). In all 3 groups, no differences were observed between dominant and nondominant sides in the radii or tibias. Conclusions: Physical exercise, impact and nonimpact, is related to enhanced bone properties, as measured by quantitative ultrasound. Longitudinal studies using various modes of bone evaluation are necessary to determine the long-term effect of various types of exercise on bone properties.
AB - Background: Physical exercise during childhood has been shown to enhance bone mineral density, thus reducing the risk of osteoporosis. Objective: To examine bone properties, as measured by quantitative ultrasound, in prepubertal and early-pubertal female athletes engaged in impact and non-impact sports. Design: Survey. Setting: General community. Participants: Twenty-five acrobatic gymnasts, 21 swimmers, and 21 control subjects. Athletes had been training for at least 1 1/2 years. Main Outcome Measure: Bone speed of sound (bilateral) at the distal radius and the midtibia. Results: Gymnasts were significantly shorter and lighter than swimmers and control girls (P <. 001) but had a body mass index similar to that of swimmers. Adiposity was lower in athletes than in controls. Speed of sound did not correlate with measures of body size. Higher mean ± SD radial speed of sound values (nondominant side) were observed in gymnasts (3764 ± 104 m/s; P = .045) than in swimmers and control girls (3732 ± 99 and 3721 ± 83 m/s, respectively). Mean ± SD tibial speed of sound values (non-dominant side) were similar in gymnasts and swimmers (3629 ± 87 and 3619 ± 78 m/s, respectively) and higher in the athletic groups than in the control group (3516 ± 127 m/s; P < .001). In all 3 groups, no differences were observed between dominant and nondominant sides in the radii or tibias. Conclusions: Physical exercise, impact and nonimpact, is related to enhanced bone properties, as measured by quantitative ultrasound. Longitudinal studies using various modes of bone evaluation are necessary to determine the long-term effect of various types of exercise on bone properties.
UR - http://www.scopus.com/inward/record.url?scp=0037298786&partnerID=8YFLogxK
U2 - 10.1001/archpedi.157.2.139
DO - 10.1001/archpedi.157.2.139
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C2 - 12580682
AN - SCOPUS:0037298786
SN - 1072-4710
VL - 157
SP - 139
EP - 143
JO - Archives of Pediatrics and Adolescent Medicine
JF - Archives of Pediatrics and Adolescent Medicine
IS - 2
ER -