title: Running activity profile of adolescent tennis players during match play.
abstract: The aims of this study were (1) to assess the running activities of adolescent tennis players during match play with respect to velocity, acceleration, and deceleration; (2) to characterize changes in these activities during the course of a match; and (3) to identify potential differences between winners and losers. Twenty well-trained adolescent male athletes (13 ± 1 y) played one simulated match each (giving a total of 10 matches), during which distances covered at different velocity categories (0 to < 1, 1 to < 2, 2 to < 3, 3 to < 4, and ≥ 4 m·s(-1)) and number of running activities involving high velocity (≥ 3 m·s(-1)), acceleration (≥ 2 m·s(-2)), and deceleration (≤ -2 m·s(-2)) were monitored using a global positioning system (10 Hz). Heart rate was also assessed. The total match time, total distance covered, peak velocity, and mean heart rate were 81.2 ± 14.6 min, 3362 ± 869 m, 4.4 ± 0.8 m·s(-1), and 159 ± 12 beats·min(-1), respectively. Running activities involving high acceleration (0.6 ± 0.2 n·min(-1)) or deceleration (0.6 ± 0.2 n·min(-1)) were three times as frequent as those involving high velocity (0.2 ± 0.1 n·min(-1)). No change in the pattern of running activities (P ≥ .13, d ≤ 0.39) and no differences between winners and losers (P ≥ .22, d ≤ 0.53) were evident during match play. We conclude that training of well-trained adolescent male tennis players need not focus on further development of their running abilities, since this physical component of multifactorial tennis performance does not change during the course of a match and does not differ between the winners and losers.
authors.affiliation: Department of Movement Science, University of Wuppertal, Wuppertal, Germany.
authors.forename: Matthias W
authors.initials: MW
authors.lastname: Hoppe
authors.forename: Christian
authors.initials: C
authors.lastname: Baumgart
authors.forename: Jutta
authors.initials: J
authors.lastname: Bornefeld
authors.forename: Billy
authors.initials: B
authors.lastname: Sperlich
authors.forename: Jürgen
authors.initials: J
authors.lastname: Freiwald
authors.forename: Hans-Christer
authors.initials: HC
authors.lastname: Holmberg
mesh_terms: D000054:Acceleration; D000293:Adolescent; D054874:Athletic Performance / Q000502:physiology*; D040362:Geographic Information Systems; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D008297:Male; D012420:Running / Q000502:physiology*; D013715:Tennis / Q000502:physiology*