In my experiment, just like any other, there were imperfections that led to error in my results. Since I surveyed a group of junior tennis players who live in southern California, the results would probably be different from the results of tennis players from another part of the country. In California, since it is usually warm enough to play outside all year long, there is probably a higher rate of injury. Also just a different group of kids from California could give me different results, because their injuries were different. Also since I gave the questionnaire to players of different ages and years of playing, that effected the percentage of injured players, because the longer you play and the older a person is, the more likely they are to get injured. Since I did not specify on the questionnaire what I considered an injury, some people might have considered a twisted ankle (which requires time-off for 5 minutes) an injury, or, vice versa, because the recovery time is so short, the kids surveyed do not consider a twisted ankle an injury.
In my experiment dealing with the effects of different racquets on the serve, any of the 3 people I tested could have been sore that day and not serving to the usual potential. Also the speed gun could have been off by a few miles per hour, or the wind could have slowed down a serve as well. All 3 of the players normally use standard size racquets; their inexperience with the extended and the wooden racquets could have slowed down the serve. Overall, I believe that my experiment was successful, and I hope that the information found can be applied to preventing future injuries.
back to index