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Related Experiment Videos

Thicker radial cortex in physically active prepubertal girls compared to controls.

P Nanyan1, S Prouteau, C Jaffré

  • 1Laboratoire de la Performance Motrice, Orléans University, Equipe Inserm ERIT-M 0101, Orléans Regional Hospital, Orléans, France.

International Journal of Sports Medicine
|February 24, 2005
PubMed
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Physical activity positively impacts bone health in young girls. Active girls showed greater bone mineral content and cortical thickness in the radius compared to sedentary peers.

Area of Science:

  • Pediatric Endocrinology
  • Sports Medicine
  • Bone Physiology

Background:

  • Childhood and adolescence are critical periods for bone development.
  • Physical activity is recognized as a key determinant of bone mass accrual.
  • Understanding the specific effects of different physical activities on bone structure is important for optimizing skeletal health during growth.

Purpose of the Study:

  • To investigate the impact of regular physical activity on the cortical bone properties of the radius in prepubertal girls.
  • To compare bone mineral content (BMC), bone mineral density (BMD), and cortical thickness between active and control groups.
  • To explore the relationship between training duration, forearm lean mass, and cortical bone parameters.

Main Methods:

  • Study included 49 healthy prepubertal girls (17 active, 32 controls).

Related Experiment Videos

  • Bone mineral content (BMC) and bone mineral density (BMD) of the distal radius were measured using dual-energy X-ray absorptiometry (DXA).
  • Cortical thickness of the radius was assessed using digitized radiographs and radiogrammetry software.

    • Main Results:

    • Active girls exhibited significantly higher BMC and BMD compared to controls.
    • Cortical thickness at the ulnar side of the radius was significantly greater in the active group.
    • Cortical thickness correlated significantly with anthropometric, densitometric values, and training duration, but differences diminished after adjusting for training duration or forearm lean mass.

    Conclusions:

    • Regular physical activity, including gymnastics, judo, and dance, is associated with enhanced radial bone mineral content and cortical thickness in prepubertal girls.
    • The observed differences in cortical thickness between active and sedentary girls may be influenced by training volume and lean mass.
    • These findings highlight the importance of promoting physical activity for optimizing bone development during childhood.