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International journal of sports medicine2013; 34(8); 688-694; doi: 10.1055/s-0032-1333213

Bone health of apprentice jockeys using peripheral quantitative computed tomography.

Abstract: Our aim was to use Peripheral Quantitative Computed Tomography (pQCT) to assess the bone health of male and female apprentice jockeys and age- and sex-matched peers. 2 groups of 25 young adults (n=50) (age range 15-38 years) were comprised of male and female apprentice jockeys, and male and female controls. We used pQCT to measure the distal tibia and distal radius. After covarying for weight and limb length, apprentice jockeys displayed less tibial cortical area and lower strength strain index at 14% distal shaft, 38% mid shaft and 66% proximal sites measured distally than controls (p=0.001). No between group differences were found in cortical density, trabecular area, and trabecular density at the tibia. Compared with controls, apprentice jockeys displayed greater trabecular density at the distal radial site (p=0.001), greater strength strain index at 66% proximal site measured distally (p=0.01), and a lower strength strain index at the distal radius (p=0.006). In conclusion, only trabecular density at the distal radius and strength strain index at the proximal radius were greater in apprentice jockeys than controls. Strategies to increase bone density and bone strength in apprentice jockeys should be considered by relevant industry stakeholders and their health providers.
Publication Date: 2013-01-31 PubMed ID: 23371826DOI: 10.1055/s-0032-1333213Google Scholar: Lookup
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  • Journal Article
  • Research Support
  • Non-U.S. Gov't

Summary

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The research focuses on assessing the bone health of apprentice jockeys using Peripheral Quantitative Computed Tomography (pQCT). It showed that apprentice jockeys had less tibial cortical area and lower strength strain index than controls, and had greater trabecular density at the distal radius.

Research Methodology

  • The research was carried out on a group of 50 young adults in the age range of 15-38 years. This group consisted of both male and female apprentice jockeys, alongside male and female controls for comparison.
  • To assess bone health, the research used Peripheral Quantitative Computed Tomography (pQCT). This machine was used to measure the distal tibia (the inner and larger bone of the leg, below the knee) and distal radius (the end of the radius bone near the wrist).

Research Findings

  • After adjustments for weight and limb length, apprentice jockeys displayed less tibial cortical area and lower strength strain index at the 14% distal shaft, 38% mid shaft, and 66% proximal sites measured distally than controls.
  • There were no found differences between groups in terms of cortical density, trabecular area, and trabecular density at the tibia.
  • However, there were some areas where apprentice jockeys displayed differences compared to controls. They had greater trabecular density at the distal radial site, greater strength strain index at the 66% proximal site measured distally, and a lower strength strain index at the distal radius.

Conclusion and Recommendations

  • The only areas where apprentice jockeys displayed a higher value than controls were in trabecular density at the distal radius and strength strain index at the proximal radius.
  • In light of these findings, the researchers suggest that strategies to increase bone density and bone strength in apprentice jockeys should be considered. These strategies could be developed and implemented by stakeholders in the jockey industry and health providers.

Cite This Article

APA
Greene DA, Naughton GA, Jander CB, Cullen SJ. (2013). Bone health of apprentice jockeys using peripheral quantitative computed tomography. Int J Sports Med, 34(8), 688-694. https://doi.org/10.1055/s-0032-1333213

Publication

ISSN: 1439-3964
NlmUniqueID: 8008349
Country: Germany
Language: English
Volume: 34
Issue: 8
Pages: 688-694

Researcher Affiliations

Greene, D A
  • School of Exercise Science, Australian Catholic University, Strathfield, Australia.
Naughton, G A
    Jander, C B
      Cullen, S-J

        MeSH Terms

        • Adolescent
        • Adult
        • Animals
        • Athletes
        • Bone Density / physiology
        • Bone and Bones / diagnostic imaging
        • Bone and Bones / metabolism
        • Female
        • Horses
        • Humans
        • Male
        • Radius / metabolism
        • Sports
        • Tibia / metabolism
        • Tomography, X-Ray Computed / methods
        • Young Adult

        Citations

        This article has been cited 6 times.
        1. Dunne A, Warrington G, McGoldrick A, Pugh J, Harrison M, Cullen S. Body Composition and Bone Health Status of Jockeys: Current Findings, Assessment Methods and Classification Criteria. Sports Med Open 2022 Feb 14;8(1):23.
          doi: 10.1186/s40798-022-00414-1pubmed: 35157162google scholar: lookup
        2. Dunne A, Warrington G, McGoldrick A, Pugh J, Harrison M, O'Connor S, O'Loughlin G, Cullen S. Physical and Lifestyle Factors Influencing Bone Density in Jockeys: A Comprehensive Update of the Bone Density Status of Irish Jockeys. Int J Exerc Sci 2021;14(6):324-337.
          pubmed: 34055173
        3. Papageorgiou M, Dolan E, Elliott-Sale KJ, Sale C. Reduced energy availability: implications for bone health in physically active populations. Eur J Nutr 2018 Apr;57(3):847-859.
          doi: 10.1007/s00394-017-1498-8pubmed: 28721562google scholar: lookup
        4. Wilson G, Drust B, Morton JP, Close GL. Weight-making strategies in professional jockeys: implications for physical and mental health and well-being. Sports Med 2014 Jun;44(6):785-96.
          doi: 10.1007/s40279-014-0169-7pubmed: 24682950google scholar: lookup
        5. von Brackel FN, Munzinger R, Bartosik M, Simon A, Barvencik F, Oheim R, Amling M. Impact of Relative Energy Deficiency in Sport (REDs) on Bone Health in Elite Athletes: A Retrospective Analysis. J Cachexia Sarcopenia Muscle 2025 Oct;16(5):e70082.
          doi: 10.1002/jcsm.70082pubmed: 41030229google scholar: lookup
        6. McGuire A, Warrington G, Walsh A, Byrne T, Doyle L. Measurement of energy availability in highly trained male endurance athletes and examination of its associations with bone health and endocrine function. Eur J Nutr 2024 Oct;63(7):2655-2665.
          doi: 10.1007/s00394-024-03433-8pubmed: 38953963google scholar: lookup