Ability for tennis specific variables and agility for determining the Universal Tennis Ranking (UTR)
Authors: Jennifer A. Kurtz* (1), Jake Grazer (2), Bradley Alban (3), Mike Martino (4)
Jennifer A. Kurtz, MS
120 Coventry Court
Fayetteville, GA 30215
Jennifer Kurtz is a doctoral student at The University of Georgia studying exercise physiology. She is also an assistant strength and conditioning coach at Elite Performance Institute.
Jake Grazer is an Assistant Professor of Exercise Science at Georgia College & State University.
Bradley Alban is an Assistant Professor of Exercise Science at Georgia College & State University.
Mike Martino is an Professor of Exercise Science at Georgia College & State University.
Ability for tennis specific variables and agility for determining the Universal Tennis Ranking (UTR): A Review and Recommendations
Our purpose was to investigate tennis specific measures to predict a player’s Universal Tennis Ranking (UTR) value and to see what percentage of the variables most influence the ranking. Methods: 15 male and 14 female athletes volunteered to participate in this study. Each volunteer performed no more than 16 total serves or eight from the add and deuce side down the “T”, no more than 16 total forehands and backhands down-the-line, three spider tests, and two trials of footwork taps in 30 seconds. Only the top two hits were analyzed. Results: A multiple linear regression was calculated predicting a player’s UTR based on serve, forehand, backhand, agility, and footwork taps. The regression equation was significant (F (5,23) = 29.66, p<.05) with an R squared value of 0.866. Coefficient of variation (CV) and intra-class correlation coefficients (ICC) were calculated to assess reliability between player serve (r=0.902), forehand (r=0.843) and backhand velocity (r=0.858), agility (r=-0.817), and footwork (r=0.472). More noticeable was the significant predictive value of serve (r=0.902) and backhand velocity (r=0.858) to the player’s UTR. Conclusion: These results underline the important relationship between the player’s UTR and tennis-specific characteristics (serve and backhand velocity) as assessed by the player’s stroke velocity. The ability of training regimens to improve tennis-specific metrics would improve performance qualities and the player’s UTR.(more…)