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Related Experiment Videos

Elevated plasma hydroxyproline. A possible risk factor associated with connective tissue injuries during overuse.

M J Murguia1, A Vailas, B Mandelbaum

  • 1Department of Kinesiology, University of California, Los Angeles.

The American Journal of Sports Medicine
|November 1, 1988
PubMed
Summary

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Elevated basal plasma hydroxyproline levels in Navy Seal candidates were linked to a higher incidence of connective tissue injuries during intense training. Higher hydroxyproline may indicate increased injury risk.

Area of Science:

  • Sports Medicine
  • Biochemistry
  • Orthopedics

Background:

  • Connective tissue injuries are common in physically demanding training programs.
  • Biomarkers for predicting injury risk are crucial for athlete management.

Purpose of the Study:

  • To investigate the relationship between basal plasma hydroxyproline levels and the occurrence of connective tissue injuries in Navy Seal candidates undergoing intense training.

Main Methods:

  • Basal plasma hydroxyproline levels were measured in 104 male Navy Seal candidates at the start of a 7-week intense physical training program.
  • Injury incidence was monitored throughout the training program.
  • Plasma hydroxyproline levels were correlated with diagnosed connective tissue injuries.

Main Results:

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  • Eleven subjects (10.6%) sustained connective tissue injuries.
  • Injured subjects exhibited significantly higher mean plasma hydroxyproline levels (4.02 µg/ml) compared to uninjured subjects (3.10 µg/ml) (P<0.05).
  • A plasma hydroxyproline level of ≥3.3 µg/ml was associated with a higher likelihood of injury (73% of injured subjects).

Conclusions:

  • Initial basal plasma hydroxyproline levels are associated with the risk of developing connective tissue injuries during intense physical training.
  • Elevated plasma hydroxyproline may serve as a predictive biomarker for connective tissue injury risk in athletes and military personnel.