“…HR and PO data were collected during every training session using portable power meters of different brands owned by the cyclists: SRM system (n = 3) (SRM, Jülich, Welldorf, Germany), Power2max (n = 6) (Power2max, Chemnitz, Germany), PowerTap 24 (n = 2) (CycleOps, Madison, USA), SRAM Quarq (n = 1) (SRAM, Chicago, Illinois, USA), Rotor (n = 1) (Rotor bike components, Madrid, Spain), Stages powermeter (n =1) (Stages Cycling, Saddleback LTd., UK) and Pioneer power meter (n = 1) (Pioneer, Kawasaki, Kanagawa, Japan). Validity of all the crank based mobile power meters was assessed by comparing the measured power output by the mobile power output to the set power output by the ergometer (Cyclus2 ergometer, RBM Electronics, Leipzig, Germany) during every stage of the incremental test.…”