Abstract
Agility is the most important aspect in the tennis court to support the athlete’s performance, but there is a study focusing on the performance applying of agility especially for tennis and comparing it with the performance of non-specific agility which is equal. The aim of this research is to evaluate the factorial validity and reliability of the three agility tests which have been planned, conducted in the condition (with a tennis racket) and non-specific (without a tennis racket). The sample consists of 28 tennis players (15 males and 13 females; age 17 ± 1 year and 16 ± 1,2 years; height 160 ± 30 cm and 168 ± 7 cm, bodyweight 50 ± 5 kg and 52 ± 7 kg). The variable consists of three agility tests such as the 20-yard test, T-test and Illinois test, all tests were conducted with and without a racket. The reliability among and in the subjects was found high (Cronbach Alpha: 0,92 to 0,98; variation coefficient: 3 to 8 percent), with the reliability and stability for specific measurement. The correlation of non-specific and specific agility performance was high (≥0,83), meanwhile for factor analysis only one which was significant according to Guttman-Kaiser. The 20-yard test result was better when the test was conducted in certain conditions (T-test = 2,65; p &lt;0,05). For the Illinois test, the good result was in non-specific condition (uji-t = 2,95; p &lt;0,05), which was conducted with the duration 20 seconds and conducted in non-specific. The result of the test showed that the athlete having good agility will make the performance and pattern of playing to be maximal as well as support the athlete’s prestige. In this founding, when conducting the agility test of pre-planned especially for tennis, it is suggested to use the test having a short duration which is less than 10 seconds and specific sport kind which is corresponding with the sport to conduct the measurement of agility.<p> </p><p><strong> Article visualizations:</strong></p><p><img src="/-counters-/edu_01/0923/a.php" alt="Hit counter" /></p>
Highlights
Agility can be defined as the ability to move fast and efficient to change the direction of movement speed (Sekulic et al, 2013)
We evaluate the important relation in playing situations when the player is between the test observed in the children sample that is positioned on the frontcourt and exchange shots of tennis players
Cronbach Alpha (CA) and Intra-Item Korelasi (Iirs) were counted to determine the reliability among the subjects, Coefficient Variation (CV) was counted to set the reliability of the test in the subject
Summary
Agility can be defined as the ability to move fast and efficient to change the direction of movement speed (Sekulic et al, 2013). The improvement of knowledge in a relatively close distance possibly makes the test is more meaningful of the agility, the player should react fast in tennis and give the basis for the opponent’s shot conditioning and change it efficiently to improve the agility in this sport. When both players are positioned in the backcourt and deep shot, in this position, the ball needs the time which is relatively long to go to the player. This case possibly makes the player determine the right position to do the shot and, in this case, it needs reactive agility (Sekulic et al, 2014)
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