Cortical and Trabecular Bone at the Forearm Show Different Adaptation Patterns in Response to Tennis Playing

doi:10.1385/JCD:7:4:399

Journal of Clinical Densitometry

Volume 7, Issue 4, Winter 2004, Pages 399-405

https://doi.org/10.1385/JCD:7:4:399 Get rights and content

Abstract

Bone responds to impact-loading activity by increasing its size and/or density. The aim of this study was to compare the magnitude and modality of the bone response between cortical and trabecular bone in the forearms of tennis players. Bone area, bone mineral content (BMC), and bone mineral density (BMD) of the ulna and radius were measured by dual-energy X-ray absorptiometry (DXA) in 57 players (24.5 ± 5.7 yr old), at three sites: the ultradistal region (50% trabecular bone), the mid-distal regions, and third-distal (mainly cortical bone). At the ultradistal radius, the side-to-side difference in BMD was larger than in bone area (8.4 ± 5.2% and 4.9 ± 4.0%, respectively, p < 0.01). In the cortical sites, the asymmetry was lower (p < 0.01) in BMD than in bone area (mid-distal radius: 4.0 ± 4.3% vs 11.7 ± 6.8%; third-distal radius: 5.0 ± 4.8% vs 8.4 ± 6.2%). The asymmetry in bone area explained 33% of the variance of the asymmetry in BMC at the ultradistal radius, 66% at the mid-distal radius, and 53% at the third-distal radius. The ulna displayed similar results. Cortical and trabecular bone seem to respond differently to mechanical loading. The first one mainly increases its size, whereas the second one preferentially increases its density.

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Original ArticleCortical and Trabecular Bone at the Forearm Show Different Adaptation Patterns in Response to Tennis Playing

Abstract

Bone

Bone Miner

Bone

J Clin Densitom

Bone

Bone

Bone

J Clin Densitom

J Clin Densitom

Bone

Bone mineral density in elite 7- to 9-yr-old female gymnasts and swimmers

Med Sci Sports Exerc

Gymnastic training and bone density in pre-adolescent females

Med Sci Sports Exerc

Effect of physical training on bone mineral density in prepubertal girls: a comparative study between impact-loading and non-impact-loading sports

Osteoporos Int

Effect of impact load and active load on bone metabolism and body composition of adolescent athletes

Med Sci Sports Exerc

Bone mineral density in adolescent female athletes: relationship to exercise type and muscle strength

Med Sci Sports Exerc

Mid-femur geometry and biomechanical properties in 15- to 18-yr-old female athletes

Med Sci Sports Exerc

Mechanical strain and bone cell function: a review

Osteoporos Int

Bone mineral density in athletes during and after career: a comparison between loaded and unloaded skeletal regions

Calcif Tissue Int

Exercise may induce reversible low bone mass in unloaded and high bone mass in weight-loaded skeletal regions

Osteoporos Int

Skull bone mass deficit in prepubertal highly-trained gymnast girls

Int J Sports Med

Original Article
Cortical and Trabecular Bone at the Forearm Show Different Adaptation Patterns in Response to Tennis Playing