2-dimensional tennis serves show similar successful mechanical parameter across physiological differences
Authors
Kousted, Mads ; Grosen, Kristian Holmeå ; Treichel, Sean Lukas
Term
4. semester
Education
Publication year
2021
Submitted on
2021-06-01
Pages
39
Abstract
Vi udviklede en todimensionel computersimulation, der modellerer selve træffet mellem ketcher og bold (kollision) og boldens flyvning bagefter. Med en forward dynamics-tilgang undersøgte vi, hvordan slagparametre ved træf hænger sammen med vellykkede server hos spillere med forskellige fysiske forudsætninger (professionel, motionist og junior). Vi fokuserede på to vinkler: træfvinklen (den vinkel, bolden bevæger sig i, idet den rammes) og ketcherens fladevinkel (ketcherens orientering). Simulationen fandt de træfvinkler, der maksimerer spinhastigheden: 36° for den professionelle, 35° for motionisten og 34° for junioren. Disse optimale træfvinkler kunne opnås ved flere forskellige fladevinkler hos alle tre spillere. Når træfvinklen var større end optimum, faldt boldens hastighed hurtigere. På trods af fysiologiske forskelle mellem spillergrupperne er de nødvendige træfvinkler næsten ens. Det gør det lettere for spillere og trænere at sigte mod høj spinhastighed på topspin-serv.
We built a two-dimensional computer model that simulates the moment the racket hits the ball (collision) and the ball’s flight. Using a forward dynamics approach, we examined how stroke parameters at impact relate to successful serves for players with different physical capabilities (professional, recreational, and junior). We focused on two angles: the impact angle (the angle at which the ball travels when struck) and the racket face angle (the racket’s orientation). The simulation identified the impact angles that maximize spin rate: 36° for the professional, 35° for the recreational player, and 34° for the junior. These optimal impact angles could be achieved with several different racket face angles across all three players. When impact angles exceeded the optimum, ball velocity dropped more quickly. Despite physiological differences between player groups, the required impact angles are very similar. This makes it easier for players and coaches to target high spin rates for topspin serves.
[This summary has been rewritten with the help of AI based on the project's original abstract]
Keywords
Documents