title: Heart rate and match analysis in pre-pubescent soccer players.
abstract: The aim of this study was to compare match analysis (using video recordings) and the physiological load (heart rate measured every 5 s, blood lactate measured after the warm-up, first half and second half) of six 11-year-old soccer players during official games of eleven-a-side on a regular-sized pitch (100 x 65 m) and of seven-a-side on a smaller pitch (60 x 40 m). In both games, heart rate exceeded 170 beats x min(-1) 84% of the time, while blood lactate ranged from 1.4 to 8.1 mmol l(-1). No significant differences were recorded for the physiological parameters. For both matches, walking comprised 38% of total time, running 55%, inactivity 3% and jumping 3%. Although there were no significant differences between halves or matches, running for less than 10 s was 10% more frequent in the seven-a-side game. In the seven-a-side game, there were significantly more passes and significantly fewer tackles, suggesting that seven-a-side matches played on smaller pitches may be more suitable for pre-pubescent soccer players.
authors: University of Motor Sciences (IUSM), Rome, Italy. isef.fisiologia@flashnet.it
authors: L
authors: L
authors: Capranica
authors: A
authors: A
authors: Tessitore
authors: L
authors: L
authors: Guidetti
authors: F
authors: F
authors: Figura
mesh_terms: D000704:Analysis of Variance; D016009:Chi-Square Distribution; D002648:Child; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D019344:Lactic Acid / Q000097:blood*; D015203:Reproducibility of Results; D012916:Soccer / Q000502:physiology*; D014743:Videotape Recording
chemical_list: D019344:Lactic Acid