ABSTRACT
Aims: to evaluate how the act of holding a tennis racket influences the application of forces in the handrim during manual wheelchair propulsion at a self-selected comfortable speed and sprint. Methods: A case study was conducted with an experienced wheelchair tennis player who propelled the wheelchair in a straightforward trajectory at two different velocities (self-selected comfortable speed and sprint) in two different conditions (freehand and holding the racket). Kinetic and temporal data of the pushes were obtained with the SmartWheel system attached in substitution to the conventional rear wheel at the dominant side of the player. Results: holding the racket affects the propulsion pattern mainly when an accelerated movement is required (sprint). Compared to the propulsion at a self-selected speed, propelling the chair as fast as possible with the racket in hands resulted in lower total and tangential forces on the handrim, and decreased push time and increased push frequency. Conclusion: Such influence on both kinetic and temporal propulsion impact the mechanical efficiency of the manual wheelchair propulsion, which may, ultimately, affect the sport´s performance. Special attention should be directed to the propulsion training with the racket in maneuvers and motions that are characteristic of the wheelchair tennis match in an attempt to provide the athlete with proper technique for optimal propulsion efficiency and sports performance.(AU)
Subject(s)
Humans , Male , Tennis , Hand Strength , Sports for Persons with Disabilities , Self-Help Devices , KineticsABSTRACT
Em 2015, São José do Rio Pardo sediou a 59°edição dos Jogos Regionais com um discurso de legado esportivo para a população do município. Essa pesquisa buscou avaliar o legado deixado a partir da manutenção dos equipamentos públicos de lazer esportivo seis meses após o evento mencionado. Trata-se de um estudo qualitativo de campo que cruzou dados de análise documental com visitas in loco aos equipamentos. Ocorreram investimentos e melhorias que poderiam sinalizar um legado esportivo efetivo e um incentivo às práticas de lazer. Entretanto, ao visitar os locais, percebe-se que o poder público municipal não desempenhou atividades de manutenção básica. Em alguns casos, como na pista de BMX, acredita-se estar mais próximo do "largado" esportivo devido ao estado de abandono, deterioração e falta de manutenção adequada. Sediar eventos dessa magnitude pode contribuir para o incentivo à prática esportiva, desde que o poder público continue a desenvolver políticas e leis de incentivo voltadas ao setor.
In 2015, São José do Rio Pardo City hosted the 59th Regional Games with a sports legacy address for citizenship. The present research sought to evaluate the legacy left from the maintenance of public sports leisure equipment six months after the event mentioned. This is a qualitative field study that crossed documentary analysis data with on-site visits to the equipment. The investments and improvements made could signal a sporting legacy and an incentive to leisure practices. However, when visiting the sites, it is noticed that the municipal public power did not perform basic maintenance activities. Some places are closer to "sportive abandonment" and deterioration due public neglect. Here we can mention the BMX racing track, for example. To host events of the Regional Games magnitude can contribute to the incentive to sports practice as long as the public power continues to develop policies and incentive rules aimed at the sector.