Abstract
In speed skating, environmental circumstances and the near-frictionless movement of the skate in a fore–aft direction over the ice make it difficult to measure technical performance parameters on a regular basis while training in an indoor speed skating rink. SkateView has been developed to overcome these challenges, comprising of two IMU’s (Inertial Measurement Unit), ultra-light force sensors, a mobile phone and an app providing feedback to coach and skater. The feedback, directly on the ice or shortly after a training session, consists of basic parameters like ice contact time, stroke frequency and lap times, and more parameters can be added. Stroke frequency is an important performance parameter, which is presented on a stroke–by–stroke basis and provides a direct insight into the activity.
Highlights
Speed skating is a technical as well as an endurance sport, and at first sight it is quite surprising that hardly any objective feedback is provided during training sessions
Postponed feedback of a 500 m race presented in Error! Reference source not found. shows a rapid decrease in stroke frequency over the first 100 m, and a sudden increase when entering the corner
The bipedal phase is negative in the first part after the start, indicating that the skater is running rather than skating, which is the case in a good sprint on skates
Summary
Speed skating is a technical as well as an endurance sport, and at first sight it is quite surprising that hardly any objective feedback is provided during training sessions. An important reason for this is the unique propulsion property in speed skating, which makes speed skating challenging to master–the movement being quite different from propulsion methods in daily life, such as walking and cycling–and challenges biomechanical interpretation [1]. The complex biomechanical nature of speed skating challenges the correct framing and observation of the skating movements, and there is ample need for a good and easy to use feedback mechanism. In cycling, it is relatively simple to provide meaningful feedback such as speed, cadence and power. In speed skating, the ‘holy grail’ is power per stroke
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