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Massage may initiate tendon structural changes--a preliminary study.
Waldemar Andrzejewski1, Krzysztof Kassolik1, Piotr Dziegiel2
1Department of Physiotherapy, University School of Physical Education, Wroclaw, Poland Public Higher Medical Professional School, Opole, Poland.
In Vivo (Athens, Greece)
|May 16, 2015
Summary
Massage combined with running exercise altered rat tendon collagen fiber percentages in small-diameter fibers. This preliminary study suggests massage may induce minor structural changes during chronic exercise.
Area of Science:
- Biomechanical research
- Exercise physiology
- Connective tissue morphology
Background:
- Physical exercise is crucial for organism function.
- Chronic exercise effects on tissue morphology require further investigation.
- Understanding tendon adaptation to exercise is vital.
Purpose of the Study:
- To investigate the impact of combined physical training and massage on rat tendon morphology.
- To analyze changes in collagen fiber distribution within tendons.
Main Methods:
- Fifty Buffalo strain rats were divided into experimental (training + massage) and control (training only) groups.
- Animals underwent 10 weeks of treadmill training.
- Massage was applied five times weekly to the experimental group.
Main Results:
- The experimental group showed increased collagen fiber percentage in small-diameter tendons (≤100 nm) at week 3, followed by fluctuations.
- No significant differences in collagen fiber counts were found for larger diameter fibers (101-400 nm) between groups.
- Tendon morphology changes were specific to smaller collagen fiber diameters.
Conclusions:
- Long-term massage during running training may induce subtle structural modifications in rat tendons.
- These findings suggest a potential role for massage in modulating exercise-induced tendon adaptations.
- Further research with extended observation is recommended to confirm these preliminary results.

