“…The numerous studies analysing the agreement between simultaneously installed power meters are difficult to interpret [1, 3-5, 8, 13, 20, 23] because generalisations from individual power meters to their respective manufacturers are highly limited, as Gardner et al [9] and the current study illustrate. However, direct system-to-system comparisons revealed differences comparable to the current study or higher (1-2 % between Power-Tap and SRM [5]; 0-12 % between PowerTap, Quarq and Stages [20]; 2-17 % between PowerTap, SRM and Ergomo®Pro [8]).…”