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- New technologies to the study the golf puttingPublication . Fernandes, Orlando; Dias, Gonçalo; Couceiro, Micael; Manuel Clemente, Filipe; M. L. Martins, Fernando; Luz, Miguel; Mendes, RuiThe technology evolution, especially in the last decade, allowed major advances in golf putting analysis. This scientific advance benefited from multidisciplinary interaction, such as: biomechanics, engineering, mathematics and motor control. Utilizing digital cameras along automatic tracking techniques, it is possible to obtain valuable and accurate information about the putting gesture and/or ball trajectory. This can provide relevant feedback to athletes and coaches. In this work, we present several golf putting studies conducted on laboratorial environment. We believe that this work may contribute to a deeper analysis of human motor behavior and performance, not limited to this motor skill, but that can be applied to other motor patterns.
- The effect of artificial side wind on the serve ofcompetitive tennis playersPublication . Mendes, C. Pedro; Dias, Gonçalo; Mendes, Rui; M. L. Martins, Fernando; Couceiro, Micael; Araújo, DuarteIn tennis, the serve is the shot ofgreatest importance.The servedependsmainly on the player’stechnique, however,environmental factorscan influencethe accuracy of the serve. This study highlights the effect of side wind on the serve of 12 experienced tennis players. The players were asked to hit the intersection point betweenthe centralandthe service line at maximum speed while awind effect was artificially generated by a ventilator setup with various speed of Induced Aerodynamic Flow (IAF).Each player’s serve was then analyzed using error ellipsesas a statistical measure. Thismethod allowed us toevaluate theeffect of "random wind"in comparison to“constant wind” on the accuracy of the serves.The truncated Fourier series analysis showedthat there was an adaptive pattern in the accuracy of the serve dependingon therandom wind. However in four players,the more unpredictablethe impact of the wind the more accurate they becamewith the serve. The fact that there was not a linear trend in the accuracy of serveswhen IAFincreased shows that each playeradapts differentlytothe windinfluence.