Sprint Kayaking Stroke Rate Reliability, Variability and Validity of the Digitrainer Accelerometer Compared to Gopro Video Measurement
Date
Authors
Supervisor
Item type
Degree name
Journal Title
Journal ISSN
Volume Title
Publisher
International Society of Biomechanics in Sports
Abstract
Reliability, variability, and validity of stroke rate measured via a Digitrainer accelerometer and GoPro 60 Hz video camera were determined. Six elite New Zealand kayakers (three males, three females) performed three trials of 300-m sprints in a single kayak (K1) mounted with the Digitrainer and camera. Average individual within-trial reliability and between-trial reliability and variability were calculated using data from 40 strokes beginning at 200-m. Both Digitrainer and video showed good reliability (Mdiff% =5%; ES =0.6), and moderate variability (ICC <0.67; TE% <10%). There was good agreement between Digitrainer and video stroke rates (r=0.86, p=0.000), however the Digitrainer overestimated stroke rate by 4 ±5 spm. Both systems can assess relative change in stroke rate, however video should be used when valid stroke rates are required.Description
Source
International Symposium on Biomechanics in Sports. https://ojs.ub.uni-konstanz.de/cpa/article/view/5294
DOI
Publisher's version
Rights statement
Authors can retain copyright, while granting the International Society of Biomechanics in Sports (ISBS) the right of first publication.