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Abstract Details

Abstract Title

BC4 TETRAPLEGIC BOCCIA PLAYER AND THE NECESSITY TO USE A HAND ORTHOSIS FOR BEST PERFORMANCE

Abstract Theme

Technology in sports

Type Presentation

Poster

Abstract Authors

Presenter Lucyana de Miranda Moreira - University of Mogi das Cruzes (Nucleous of Technological Researchs) - BR
Silvia Regina Matos da Silva Boschi - University of Mogi das Cruzes (Nucleous of Technological Researchs) - BR

Presentation Details

Poster Exhibition Site (Local): Pink - 7        Date: 3 September        Time: 8am to 7pm        Presenter: Lucyana Moreira

Abstract Resume

Background: The Paralympic Sports provide a platform in which athletes with impairments are able to achieve remarkable levels of performance and create many athletic challenges,
particularly for those with a higher level of physical impairment. These athletes often depend on some form of assistive technologies to practice sports. The orthosis are dispositives either temporary
or permanent, that help the body function to prevent or compensate for disorders.

Case presentation: Paralympic sports have seen major changes in their use of technology (prosthesis, orthosis, etc.) from their inception until modern day. The innovation, design and application of
technology to sports are very important to athletes looking to optimize their performance. The International Paralympic Committee recognizes the important role of sports equipment in enabling
Paralympic competition. Boccia was created for a specific group of people presenting severe degree of motor dysfunction, such as spinal cord injuries. It can be a demanding sport and requires high
levels of attention and concentration, highlighting the visual-motor coordination of the athletes. In the Boccia its common for BC3 athletes use assistive devices, such as ramps or chutes, but not for
BC4 athletes. BC4 athletes have severe locomotor dysfunction affecting all four limbs. Their throwing is assisted by gravity. This is because of muscular weakness in the upper limbs or because of
limited distal activity of the upper limbs (below the elbow) resulting in minimal hand function and poor grip. The ability to throw the ball follows from the diagnosis of the athlete. C5 tetraplegics
often throw the ball from a bilateral grasp and pushing from the chest, though throwing by use of pendulum swing is more efficient and usually preferred when functionality allows. Functionally, when
wrist extension is preserved in C5 injuries, tenodesis can replace active grasp by passive whole hand and lateral grips. During wrist extension, tenodesis causes passive tendon shortening of flexor
digitorum superficialis and profundus, leading to passive finger-to-palm flexion, and of flexor pollicis longus, leading to thumb-to-index lateral face adduction.

Conclusion: As shoulder, elbow and hand active ranges of movement are limited in C5 tetraplegics a wrist orthosis is being developed, to assist them in positioning the hand similar to
tenodesis, so that they can throw the ball by pendulum swing. This orthosis is created for a master degree and results in sport performance being primarily generated by the athlete’s own physical
ability, one of the fundamental principles regarding the use of equipment used during IPC Sanctioned Competitions and Events and at the Paralympic Games. After this, precision tests will be performed
to verify its functionality.

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