Resumo

LOSADA, José Luis; CASAL, Claudio A.  e  ARDA, Antonio. How to improve the effectiveness in a tennis player: log-linear regression models. CPD [online]. 2015, vol.15, n.1, pp.63-70. ISSN 1989-5879.  https://dx.doi.org/10.4321/S1578-84232015000100006.

The effectiveness in the sport refers to the impact achieved by an action carried out in normal conditions, being present in the execution of any physical activity, refers to the ability to produce the desired effect, and is related to efficiency, understood as the effect of an action carried out in the best conditions possible, and which aims achieve the goal, and got the win. The objective of this work consisted in identifying the relationship between the area and the type of shot, which tennis player has greater and lesser effectiveness in the game. This was observed to a tennis player during 12 workouts with a rival of equivalent level, according to the ATP, during the 2012-2013 season, registering their situation in the field and the type of shot of all returns successfully, understood as obtaining the point or recovery of the drawdown. Three categorical criteria which constitute an instrument of observation to the game of tennis in the horizontal area, and the vertical area of the track, as well as the type of shot that performs in terms of drive, reverse, smash and left register were created. Using log-linear regression technique they were obtained results indicate that the player presents a lower effectiveness in hits from the left side, and sample a more effectively executed from half track or background on the right side the drive and reverse. The interpretation of the results provides information on the locations on the track and hits, related to its greater and lesser effectiveness.

Palavras-chave : Log-linear; observational methodology; tennis.

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