科研之友
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摘要
The aim of this study was to determine the match locomotor characteristics of a sample of U-20 Brazilian female soccer players. Seven international matches were analyzed during the 2015 U-20 South American Championship, using global positioning technology. During a typical match, fullbacks and forwards covered greater distances in high-intensity running and sprinting than central defenders and midfielders (effect size [ES]=1.42-3.69). In the final 15min of a game, total and high-intensity running distance and player load were approximate to 20 to 35% (ES=0.41-3.86) lower than in the first 15min period for midfielders, fullbacks, forwards, and central defenders. Sprinting, and high-intensity running distances, and the frequency of accelerations >2m (.) s (-2) immediately after the most intense 5-min period declined in forwards (ES=1.78-2.67), fullbacks (ES=1.96-5.25), midfielders (ES=1.66-3.77), and central defenders (ES=1.50-4.22). Maintaining high' levels of activity in the first half resulted in approximate to 19% reductions in the second half for sprinting distance and frequency of accelerations >2m (.) s (-2) (ES=0.43 and 0.88), while increases in these locomotor activities were observed in situations with low' levels of activity (ES=0.64 and 1.12, for sprinting and accelerations >2m (.) s (-2) , respectively) (within-subject analysis). The data demonstrate that high-intensity efforts are reduced during various phases of international matches and overall activity patterns vary among playing positions. This information could be useful in the development and prescription of sex- and age-specific training regimes.
- 出版日期2017-9
