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   Relative match intensities at high altitude in highly-trained young soccer players (ISA3600)  
   
نویسنده buchheit m. ,hammond k. ,bourdon p.c. ,simpson b.m. ,garvican-lewis l.a. ,schmidt w.f. ,gore c.j. ,aughey r.j.
منبع journal of sports science and medicine - 2015 - دوره : 14 - شماره : 1 - صفحه:98 -102
چکیده    To compare relative match intensities of sea-level versus high-altitude native soccer players during a 2-week camp at 3600 m,data from 7 sea-level (australian u17 national team,aus) and 6 high-altitude (a bolivian u18 team,bol) native soccer players were analysed. two matches were played at sea-level and three at 3600 m on days 1,6 and 13. the yo-yo intermittent recovery test (vyo-yoir1) was performed at sea-level,and on days 3 and 10. match activity profiles were measured via 10-hz gps. distance covered >14.4 km.h−1 (d>14.4 km•h−1) and >80% of vyo-yoir1 (d>80%vyo-yoir1) were examined. upon arrival at altitude,there was a greater decrement in vyo-yoir1 (cohen’s d +1.0,90%cl ± 0.8) and d>14.4 km•h−1 (+0.5 ± 0.8) in aus. d>14.4 km.h−1was similarly reduced relative to vyo-yoir1 in both groups,so that d>80%vyo-yoir1 remained similarly unchanged (-0.1 ± 0.8). throughout the altitude sojourn,vyo-yoir1 and d>14.4 km•h−1 increased in parallel in aus,so that d>80%vyo-yoir1 remained stable in aus (+6.0%/match,90%cl ± 6.7); conversely d>80%vyo-yoir1 decreased largely in bol (-12.2%/match ± 6.2). in sea-level natives competing at high-altitude,changes in match running performance likely follow those in high-intensity running performance. bolivian data confirm that increases in ‘fitness’ do not necessarily translate into greater match running performance,but rather in reduced relative exercise intensity. © 2014,journal of sports science and medicine.
کلیدواژه Association football; Hypoxia; Match running performance
آدرس sport science department,myorobie association,montvalezan,france,performance department,paris saint germain fc, France, institute of sport,exercise and active living,victoria university, Australia, aspire academy for sports excellence, Qatar, aspire academy for sports excellence, Qatar, department of physiology,australian institute of sport,canberra,australia,university of canberra,research institute for sport and exercise, Australia, department of sports medicine / sports physiology, Germany, department of physiology,australian institute of sport,canberra,australia,exercise physiology laboratory,flinders university, Australia, institute of sport,exercise and active living,victoria university, Australia
 
     
   
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