Contextualisation of running power: a systematic review

TLDR: Although the Stryd system could be a valid tool for measuring temporal parameters, RunScribe seems to be a more accurate device to measure temporal parameters and step length.

Abstract: Problem Statement: Power meters have helped performance cyclists to revolutionisetheir training and competitions. However, running power is not obtained by a power meter, as in cycling, but is estimated through accelerometers, gyroscopes or inertial measurements units. Therefore, this relatively new concept must be correctly contextualised. Approach:The most widely used deviceis the summitmodel of the Stryd Running Power Meter, butthe validity, reliability and repeatability of this device must be studied extensively, both regarding the estimation of the running power and the biomechanical parameters. Purpose:The main purpose was to examine all articles where the Stryd device was used to analyse both running power and biomechanical parameters. Methods: Electronic databases were searched using key related terminology such as:Stryd, running power and biomechanical parameters. Results: The production of portable and low-cost equipmenthas led to the capacity toanalyse power and biomechanical parameters in running using different devices. Nevertheless, to avoid erroneous conclusions, it is necessary to take into account considerations in the different studies such as the device used, its placement and the level of the participantsunder study.Conclusions:The Stryd device could be considered as the most recommended device to measure running power compared to other available devices. Although the Stryd system could be a valid tool for measuring temporal parameters, RunScribe seems to be a more accurate device to measure temporal parameters and step length. From a practical point of view, future studies should alsoassess running power in comparison to cycling power in elite triathletes, a population with a high level in both disciplines and who could provide useful data for practical applications in training and competition.