Cinemática de la carrera y su relación con resistencia muscular del glúteo medio y mayor

Abstract

The alteration of running kinematics in relation to the muscular resistance of the gluteus medius and maximus is linked to a high prevalence of injuries in amateur runners when they are in a state of fatigue. Furthermore, evidence mentions that intrinsic and extrinsic factors could contribute to injury risk. However, the variability of results obtained does not indicate that the influence of said muscles will cause kinematic changes. Therefore, the objective of this research project was to determine the relationship between running kinematics and resistance of the gluteus medius and maximus. An evaluation protocol was applied to 50 amateur runners between 18 and 60 years of age of both sexes. The variables analyzed were running kinematics (anterior pattern, extensor pattern and normal pattern), pelvic symmetry, and the strength of the gluteus medius and maximus in a state of fatigue. This research is analytical - prospective without intervention and had a transversal quantitative approach (strength/resistance of the gluteus medius and maximus) and qualitative (kinematics) that were correlated with the Spearman statistical test. The results obtained were that 76% of this population had a normal bilateral kinematic pattern, but when subjected to the fatigue protocol these changed significantly to 28% in the right limb and 12% in the left. Regarding the Spearman coefficient between kinematics and strength, it went from a low correlation in FGm ABD (0.103), FGm ROT-EXT (0.176), FGM ROT-EXT (0.128) to a medium correlation 0.319*, 0.320*, 0.298 * respectively, being something positive in this study. However, we can conclude that, due to the variability of the results obtained in the kinematic patterns, it may be due to multiple factors that reduce the effectiveness of the running gesture and not only the weakness caused by the gluteus medius and maximus when they are fatigued.