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The purpose of this study was to examine differences in physical performance and game-specific skills between elite and semi-elite rugby league players during match-play. Time-motion analysis was used to determine physical and game-specific skill match demands in 17 elite and 22 semi-elite rugby league players. Physical performance (time, intensity of exercise, frequency, repeated-sprint ability, and speed measures) and game-specific skill measures (ball carries, supports, ball touches, play-the-balls, and tackles) were recorded per minute of playing time. The main findings were that total intensity (elite: 108.9 +/- 10.6 m . min(-1); semi-elite: 102.3 +/- 9.7 m . min(-1)), high-intensity exercise (elite: 36.7 +/- 9.8 m . min(-1); semi-elite: 29.6 +/- 7.8 m . min(-1)), mean playing speed (elite: 6.6 +/- 0.6 km . h(-1); semi-elite: 6.2 +/- 0.6 km . h(-1)), and support play (elite: 0.29 +/- 0.16 . min(-1); semi-elite: 0.15 +/- 0.09 . min(-1)) were all higher during first-half match-play in the elite than semi-elite players (P 0.01). There were no differences in most physical performance and game-specific skill measures for the match between the two playing standards. These results show that while the two standards of competition have similar game-specific skills and physical demands during a match, there is variation within a match according to standard. Specifically, the higher physical demands placed on elite players during the first half could result in the earlier onset of physical fatigue towards the end of a match.
Sirotic et al. (Mon,) studied this question.