Estabilidad dinámica de la pelvis y su relación con la cinética y cinemática del pie

Resumo

The purpose of this study was to assess whether there is a relationship between dynamics pelvic instability with kinetics and kinematics of the lower limb. The limitation of ankle flexion with plantar pressures is also related. In a sample of 47 healthy male runners, the single leg squat test was recorded and then evaluated by a committee of experts. The participants ran on a track of athletics at 3.3m / s with 2 accelerometers in tibia and head. The plantar pressures were also taken in dynamics. The joint range of ankle flexion has also been assessed by the ankle flexion test. The results obtained were higher maximum pressure in M1 and M2 of the right foot in the group that presented poor dynamic stability of the pelvis. On the other hand, the group with limitation of ankle flexion presented lower maximum pressure time in the medial heel and M4 of the right foot and lower load ratio in M4 of the left foot. Dynamic pelvic instability produces greater pressure in the medial area of the forefoot (M1 and M2) which is usually associated with greater pronation of the foot. Limitation to ankle flexion causes less pressure time in the medial bead and M4, suggesting changes in the time of plantar pressures. Accelerometry did not show significant results, this supports the hypothesis that the body has a neuromuscular adjustment system to control biomechanical alterations and that they do not modify the foot's impact against the ground.