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Bone turnover responses to changed physical activity.

K M Karlsson1, C Karlsson, H G Ahlborg

  • 1Department of Orthopaedics, Malmo University Hospital, Malmo, Sweden. magnus.karlsson@orto.mas.lu.se

Calcified Tissue International
|October 18, 2003
PubMed
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Male soccer players exhibit higher bone turnover than controls. Physical activity changes influence bone formation and resorption markers within weeks, suggesting increased bone resorption may contribute to bone density loss in former players.

Area of Science:

  • Sports Medicine
  • Orthopedics
  • Bone Physiology

Background:

  • Bone turnover is crucial for skeletal health.
  • Athletic activity impacts bone metabolism.
  • Soccer players may experience unique bone remodeling patterns.

Purpose of the Study:

  • Compare bone turnover in male soccer players versus controls.
  • Investigate bone turnover changes with varying activity levels.
  • Correlate bone markers with physical activity in athletes.

Main Methods:

  • Measured serum osteocalcin (OC), PICP, and tALP for bone formation.
  • Assessed bone resorption using ICTP.
  • Compared 12 male soccer players with 27 age/gender-matched controls.
  • Monitored bone turnover weekly during a 4-week rest and 10 days post-training resumption.

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Main Results:

  • Soccer players showed higher OC and ICTP than controls at season's end.
  • Reduced activity lowered PICP and increased ICTP.
  • Post-rest, PICP increased and ICTP decreased with training resumption.
  • ICTP remained elevated in players compared to controls after rest.

Conclusions:

  • Male soccer players have significantly higher bone turnover.
  • Physical activity level directly influences bone formation and resorption markers.
  • Elevated bone resorption (ICTP) in soccer players may contribute to reduced bone density.