Aerobic and anaerobic performance among rugby players: relationships with internal and external playing load

Abstract

This study aims to identify and compare aerobic and anaerobic performance between positions, as well as to analyze the internal and external loads in a simulated match, in elite Rugby Union athletes. Twenty one athletes from the Top 100 Academy in Santa Catarina participated in the study, divided into two groups according to their tactical functions, with 9 forwards (28.0 ± 6.1 years, 103.7 ± 10.6 kg and 1.83 ± 0.07 m) and 12 backs (22.4 ± 3.6 years, 79.8 ± 4.4 kg and 1.79 ± 0.05 m). The aerobic and anaerobic functional characterization of the athletes was obtained through field tests, respectively: a) Carminatti incremental test (T-CAR); b) 30 meter sprint test. The game demand was assessed by means of displacement analysis using GPS (external load), and perceived effort after the game (internal load). Significantly higher values were observed for the backs, in the sprint speed performance, as well as for maximum aerobic speed and in the VO2max, compared to the forwards. In addition, the displacement pattern during the game demonstrated greater distance covered, number of sprints and speed of the sprints to the backs in comparison to the fowards. However, there was no significant difference in the internal load perceived by the athletes. It is concluded that the groups have differences in their physical aptitudes, having the backs more activities involved with running, dribbling and feints, while the forwards perform less runs, but more physical contacts and static strength activities, which are not measured by GPS.