A motion analysis of work-rate in different positional roles in professional football match-play
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...This is supported further by previous studies reporting a greater distance covered in the first than the second half both for players (Reilly and Thomas, 1976; Van Gool et al., 1988; Bangsbo et al., 1991; Bangsbo, 1994) and assistant referees (Krustrup et al....
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...Because of the intermittent nature of soccer (Reilly and Thomas, 1976; Reilly, 1990; Bangsbo et al., 1991), these findings indicate that soccer at the highest standard is characterized by the players’ ability to perform high-intensity work repeatedly....
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...Several researchers have observed a reduction in total distance covered in the second half compared with the first (Reilly and Thomas, 1976; Van Gool et al., 1988; Bangsbo et al., 1991)....
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...Time–motion analysis is useful for examining the activity pattern and physical aspects of soccer (Reilly and Thomas, 1976; Mayhew and Wenger, 1985; Bangsbo et al., 1991; Bangsbo, 1994)....
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...This is supported further by previous studies reporting a greater distance covered in the first than the second half both for players (Reilly and Thomas, 1976; Van Gool et al., 1988; Bangsbo et al., 1991; Bangsbo, 1994) and assistant referees (Krustrup et al., 2002)....
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...Anthropometric and physiological measurements in under-age players Source n Players Age (years) Height (m) Body mass (kg) HRmax (beats´ min- 1) VÇ O2max (ml ´kg- 1 ´ min - 1) Leatt et al. (1987) Jankovic et al. (1993) Jones and Helms (1993) Tumilty (1993) Hugg (1994) Franks et al. (1999) 8 9 16 30 23 64 Canada under-16 Canada under-18 Croatia national English League English League AIS Squad Australian under-17 (at World Championships) Australian under-17 (at 1993 World Championships) English National under-16 15.4 ± 0.5 16.7 ± 0.5 16.0 ± 0.5 14.9 ± 1.2 15.8 ± 1.1 16.1 ± 0.7 - - - 1.71 ± 0.04 1.76 ± 0.04 1.76 ± 0.05 1.70 ± 0.08 1.75 ± 0.06 1.78 ± 0.07 1.72 ± 0.06 1.74 ± 0.07 1.76 ± 0.06...
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...Sprinting Jumping Flexibility Balance Static strength 0.45± 0.91 0.33± 0.86 0.69± 0.91 0.24± 0.86 0.30± 0.97 Sources: Bouchard and Malina (1983) and Maes et al. (1993). may have missed opportunities for training at a critical time....
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...Sprints 15 m (s) 40 m (s) VÇ O2 (ml ´kg - 1 ´min) 1.84 ± 0.02 79.4 ± 1.8 14.1 ± 0.7 2.62 ± 0.07 5.83 ± 0.11 55.7 ± 1.5 1.77 ± 0.01 69.9 ± 1.1 11.0 ± 1.4 2.48 ± 0.04 5.53 ± 0.06 59.6 ± 1.0 1.73 ± 0.01 67.6 ± 1.1 10.5 ± 0.4 2.51 ± 0.04 5.59 ± 0.06 60.4 ± 0.9 1.72 ± 0.02 67.7 ± 1.7 11.0 ± 0.7 2.43 ± 0.07 5.43 ± 0.11 60.0 ± 1.5 P < 0.001 P < 0.001 P < 0.001 n.s. n.s. n.s. Source: Franks et al. (1999)....
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...players and mid® eld players, and least in central defenders (Reilly and Thomas, 1976)....
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...…49.0 ± 6.0 1950 ± 150 131 ± 6 268 ± 18 1.77 ± 0.06 74.0 ± 8.0 62.6 ± 4.0 51.0 ± 5.0 1950 ± 130 134 ± 3 225 ± 9 1.78 ± 0.07 73.9 ± 3.1 60.0 ± 3.7 47.5 ± 3.0 1820 ± 150 161 ± 12 277 ± 22 Source: Bangsbo (1994c). players and mid® eld players, and least in central defenders (Reilly and Thomas, 1976)....
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