title: Analysis of the distances covered and technical actions performed by professional tennis players during official matches.
abstract: The purpose of this study was to analyse the physical and technical performances of professional tennis players during official matches. The trajectories of eight players were obtained during matches, using an automatic tracking method. The distances covered and technical performances were analysed for the first and second sets. The athletes covered (mean ± standard deviation) a total of 1702.4 ± 448.2 m in the first set, 1457.6 ± 678.1 m in the second set and 3160.0 ± 880.1 in the entire match. No differences were found between the sets for the physical variables (lateral and forward displacements, distance covered per rally, per game and per set, and the percentage of time spent in each range of velocity). However, the distances covered by the athletes during the rallies in which they were serving (median = 5.2; interquartile range (IQR) = 6.7 m) were statistically smaller than when they were returning (median = 6.2; IQR = 7.7 m). Forehand ground stroke proficiency decreased from the first (mean ± standard deviation: 75.2 ± 4.11%) to the second set (mean ± standard deviation = 65.5 ± 14.3%). In conclusion, tennis players did not present reduced physical performance from the first to the second set.
authors.affiliation: a Laboratory of Applied Biomechanics, Sport Sciences Department , State University of Londrina , Londrina , Brazil.
authors.forename: Tiago Julio Costa
authors.initials: TJ
authors.lastname: Pereira
authors.affiliation: b Physical Education Department , State University of Londrina , Londrina , Brazil.
authors.forename: Fábio Yuzo
authors.initials: FY
authors.lastname: Nakamura
authors.affiliation: a Laboratory of Applied Biomechanics, Sport Sciences Department , State University of Londrina , Londrina , Brazil.
authors.forename: Mayra Tardelli
authors.initials: MT
authors.lastname: de Jesus
authors.affiliation: c Federal Institute of Education , Science and Technology of São Paulo , São Paulo , Brazil.
authors.forename: Claudio Luís Roveri
authors.initials: CL
authors.lastname: Vieira
authors.affiliation: d School of Applied Sciences , University of Campinas , Campinas , Brazil.
authors.forename: Milton Shoiti
authors.initials: MS
authors.lastname: Misuta
authors.affiliation: e Laboratory of Instrumentation for Biomechanics, College of Physical Education , University of Campinas , Campinas , Brazil.
authors.forename: Ricardo Machado Leite
authors.initials: RM
authors.lastname: de Barros
authors.affiliation: a Laboratory of Applied Biomechanics, Sport Sciences Department , State University of Londrina , Londrina , Brazil.
authors.forename: Felipe Arruda
authors.initials: FA
authors.lastname: Moura
mesh_terms: D001132:Arm; D056352:Athletes; D054874:Athletic Performance; D003163:Competitive Behavior; D006801:Humans; D009068:Movement; D010807:Physical Endurance; D012420:Running; D013647:Task Performance and Analysis; D013715:Tennis
keywords: Kinematics; automatic tracking; match analysis; performance