Background:The biomechanical analysis can provide useful information to better understand the human motion patterns, in particular, in Olympic and Paralympic sport context. Thus, a
kinematical analysis of WR athletes with different classification performing an fundamental skill of the game can provide a quantitative and detailed description of its execution, so the purpose of
this study was to biomechanical analyze of movements injured spinal cord wheelchair rugby practitioners.
Methods: Seven wheelchair rugby male athletes volunteered to constitute the Spinal Cord Group and five male subjects Control Group. The protocol for biomechanical analysis of spinal
cord injured was proposed, evaluated and displayed the applicability. The biomechanical model used to represent the athlete’s body was developed and consisted of sixteen linked rigid body segments:
head, trunk, arms, scapulae, forearms, hands, thighs, legs and feet (right and left) and ball; and seven joints: right and left shoulder, elbow, wrist, and neck. To track the motion during pass, a
marker set constituted by 62 anatomical retro-reflective markers were associated to the biomechanical model and used to locate and orient each local coordinated system related to limbs. Trunk was
positioned in relation to the global coordinate system . The 3D kinematic analyses system DVideo was used to obtain the 3D coordinates of markers. The system used six Basler cameras (100 Hz). The
inverse kinematic procedure was applied to calculate the joint angles. In study was tested: a) the accuracy of the kinematics analysis system; b) the modeling of the wheelchair and the ball; c)
calculations the contribution of the auxiliary wheels of the specific wheelchair for the modality practice in the application of the ground reaction force; d) analyze the motion pattern; e) calculate
the interjoint, bilateral and asymmetry of spinal cord injured rugby wheelchair players and; f) proposed and evaluated the use of the force platform was for analysis and characterization of the spinal
cord injured movement. The protocol allowed the collection of kinematic and dynamic data of a specific movement of rugby wheelchair.
Results:The protocol proved sensible to detect asymmetries and bilateral and interjoint coordinations. The analysis of the motion pattern showed differences between the groups in the
phase of ball throw affecting the shoulder, elbow and wrist joints. It was possible to identify compensatory strategies of the spinal cord group to execute the chest pass. The spinal cord subjects are
coordinated but bilaterally asymmetrical during the chest pass. The evaluation of the proposed force platform to characterize the spinal cord movement showed that the model is promising to yield
important information to the objective evaluation of the kinetics of the movement in sport modality
Conclusion: We conclude that this study looked at the proposed objective and enabled further studies with the same population. The proposed protocol it allows to characterize other
types of sports movements of spinal cord injuries and assist in the of training and treatment of these individuals.