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Influence of high impact loading on ultrasound bone measurements in children: a cross-sectional report
journal contribution
posted on 1997-05-01, 00:00 authored by Robin DalyRobin Daly, P A Rich, R KleinEvidence suggests that weight-bearing exercise during the growing years may enhance peak bone mass. The purpose of this study was to compare ultrasound bone measurements, serum alkaline phosphatase (S-ALP), serum osteocalcin (S-OC), and dietary calcium in highly active and normal healthy male children. Subjects were 33 elite and subelite male gymnasts and 40 normoactive controls matched for age (9.4 +/- 1.1 years), height (133.9 +/- 5.9 cm), and weight (30.1 +/- 3.8 kg). Measurements of broadband ultrasound attenuation (dB/MHz) through the calcaneus (CBUA) and ultrasound velocity (m/s) through the calcaneus (CVOS), distal radius (RVOS), and proximal phalanx of the index finger (PVOS) were performed using a Contact Ultrasonic Bone Analyzer (CUBA Research). Gymnasts had significantly greater CVOS (P < 0.001), RVOS (P < 0.0001), and PVOS (P < 0.05). There were no differences in CBUA, S-ALP, or S-OC between groups. RVOS correlated significantly with dietary calcium intake in all subjects (P < 0.05) and training time in the gymnasts (P < 0.05). Though gymnasts had significantly greater calcium intakes than controls (P < 0.05), whose mean value was below the RDA, after controlling for calcium intake in the gymnasts alone, RVOS was still significantly correlated with training time (P < 0.05). These preliminary results suggest that the heavy musculoskeletal loading inherent in gymnastics training produces positive adaptive responses in the growing skeleton. Furthermore, ultrasound appears to provide a safe, noninvasive means of comparing the skeletal status of exercising and normal healthy children, whereas single samples of biochemical markers did not discriminate between the groups.
History
Journal
Calcified tissue internationalVolume
60Issue
5Pagination
401 - 404Publisher
SpringerLocation
[New York, N.Y.]Publisher DOI
ISSN
0171-967XLanguage
engPublication classification
C1.1 Refereed article in a scholarly journalCopyright notice
1997, Springer-Verlag New York IncUsage metrics
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No categories selectedKeywords
Bone DensityBone and BonesCalcaneusCalcium, DietaryChildCross-Sectional StudiesGymnasticsHumansMaleRadiusReference ValuesUltrasonographyScience & TechnologyLife Sciences & BiomedicineEndocrinology & Metabolismultrasound velocitybroadband ultrasound attenuationimpact loadingchildrenTRANSMISSION VELOCITYMINERAL DENSITY
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