Examination of fatigue development in elite soccer in a hot environment: a multi-experimental approach. - Mohr,M.; Mujika,I.; Santisteban,J.; Randers,MB.; Bischoff,R.; Solano,R.; Hewitt,A.; Zubillaga,A.; Peltola,E.; Krustrup,P. (Scand J Med Sci Sports, 2010)