Performance of an athlete can be measured, analyzed and tracked with several systems. While heart rate has been the most commonly used technology in sports for several decades, more recently different technologies have been introduced in numerous sports. For example, in skiing mobile phone accelerometers have been used for technique detection (Stöggl et al. 2014). Modem mobile technologies have also come into everyday coaching in almost all sports. Mobile apps such as Ubersense and Coaches Eye make it possible to film and analyze sport trials with hand-held devices. However, combining other signals e.g. forces requires still quite a lot of work and time, and feedback is rarely available online. The aim of the Coachtech project was to develop a universal, not sport-specific, real-time and easy-to-use analyzing system for sports that is capable of acquiring and combining analog signals with videos automatically. (Original introduction)
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