Analysis of running technique and its influences on the architecture of the Achilles tendon.

Introduction: the Achilles tendon is the most resistant tendon structure in the human body. Although it raises an injury prevalence of 24% within the population of runners, which increases exponentially at the international level. Objectives: We analyze the influence of the running technique on the architecture of the Achilles tendon, and we look for other factors that also influence its morphology. Methods: An observational, cross-sectional and descriptive study was carried out; thirty-three healthy habitual running subjects voluntarily participated. We carried out an orthogonal study of the tendon structure, obtaining values of diameter, perimeter, and microcirculation; the results were related to the runners' technique. Results: no significant differences were found regarding the influence of the running technique on the architecture of the Achilles tendon, observing that it was more significantly influenced by gender, height, and training. Conclusions: Although the running technique does not influence the thickness of the Achilles tendon, the influence of the technique on other characteristics of the tendon should continue to be studied.