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A correlation between muscular strength and hydroxyproline concentration in human patellar tendon
1Department of Chemistry, United States Military Academy, West Point, N.Y.
The Journal of Sports Medicine and Physical Fitness
|March 1, 1991
Summary
Athletic training does not appear to alter hydroxyproline levels in knee connective tissue. This suggests collagen modification in the patellar tendon is constant, regardless of leg strength or training status in athletes.
Area of Science:
- Orthopedics and Sports Medicine
- Biochemistry of Connective Tissue
- Exercise Physiology
Background:
- Knee injuries are common in athletes, particularly in contact sports.
- Understanding connective tissue adaptation to training is crucial for injury prevention and fitness programming.
- Hydroxyproline, a key component of collagen, is a potential marker for connective tissue modification.
Purpose of the Study:
- To investigate if hydroxyproline concentration in knee connective tissue changes with athletic stress or training.
- To determine the correlation between hydroxyproline levels and leg strength parameters (torque, work) in athletes.
Main Methods:
- Preliminary study involving five subjects.
- Analysis of hydroxyproline concentration in the patellar tendon.
- Measurement of leg strength parameters: torque, torque/body weight, and work.
Main Results:
- No significant correlation was found between patellar tendon hydroxyproline concentration and measured leg strength parameters.
- Hydroxyproline levels appeared relatively constant across varying leg strengths in the subjects studied.
Conclusions:
- Collagen modification, indicated by hydroxyproline concentration, does not seem to be a direct response to athletic stress or training in the knee's connective tissue.
- The findings suggest hydroxyproline levels in the patellar tendon are stable and not significantly influenced by athletic conditioning within the scope of this preliminary investigation.