Abstract

Objective: To propose and describe the kinematic model of instep kicking in professional futsal players in Chile. Methods: A biomechanical model of the execution of the technical gesture of instep kicking in futsal was developed through a literature search and a kinematic analysis of the execution was performed in professional male futsal players (n = 12, age 21 +/- 2.83 years, body mass 75.5 +/- 12.01 kg, height 1.74 +/- 0.05 m.) who compete in the ANFP Futsal Championship of Chile. The evaluation of the shot was performed in an official futsal court (FIFA Standard). The ball was placed on the penalty spot, and the participants made 2 attempts each. The kinematic variables selected were the positions and angular velocities of the knee and ankle, for both legs, and in each phase of the shot. For the application of the analysis, the VICON (R) motion capture system was used. The markers were placed on both lower limbs according to the Plug-In GaitTM Standard Lower Body model. Results: Through the literature search, a 4-phase model was generated and analyzed: Unipodal, Balance, Contact and Post Impact. The kinematics (Position [rad] and angular velocity [rad/s] of knee and ankle of the 4 phases were described. Conclusions: The literature search resulted for the qualitative research, the modification of an existing biomechanical model, thus generating, the design of the instep kicking model in futsal and described the position and average angular velocity of each phase.