The design of this study was composed of two parts: a method development using measurements from indoor treadmill roller skiing, and an adoption and validation of the method using dGNSS measurements from a roller skiing test race in a race-like outdoor course. The measurements used in both parts are from previous studies conducted by our group [4 (link),18 (link),19 (link)]. These studies were approved by the ethics committee at the Norwegian School of Sport Sciences (ref. 02-020517) and the Norwegian Centre for Research Data (ref. 54257), and were conducted in accordance with the Declaration of Helsinki and Norwegian law. Data analysis was conducted in Matlab R2019a (The Mathworks Inc., Natick, MA, USA), except for processing of dGNSS measurements and 3D optical motion capture measurements. These were conducted using dedicated software, as described in the text.
Free full text: Click here