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The inter-device reliability of global navigation satellite systems during team sport movement across multiple days.
- Source :
- Journal of Science & Medicine in Sport; Apr2022, Vol. 25 Issue 4, p340-344, 5p
- Publication Year :
- 2022
-
Abstract
- <bold>Objectives: </bold>(1) Determine the inter-device and inter-manufacturer reliability; and (2) investigate the variation in reliability over time for common global navigation satellite systems.<bold>Design: </bold>Repeated measures.<bold>Methods: </bold>A total of twenty 10-Hz devices manufactured by StatSports (n = 10, Apex Pro; StatSports, Newry, Ireland) and Catapult Sports (n = 10, Vector S7; Catapult Sports, Melbourne, Australia) were towed on a sprint sled during 8 × 40-minute team sport movement protocol over a 4-week period. The coefficient of variations for distance, velocity and acceleration/deceleration metrics were calculated to show dispersion of the data relative to the mean or median for each manufacturer and interpreted as good, ≤5%; moderate, <10%; and poor, coefficient of variation ≥10%. The coefficient of variation range described the variation in reliability and was interpreted as small, ≤5%; moderate, <10% and large, ≥10%. Inter-manufacturer agreement was represented as a Cohen d (±95% confidence interval) standardised effect size.<bold>Results: </bold>Inter-device reliability for distance, peak velocity and average acceleration was good (coefficient of variation = 0.1 to 3.9%) for both manufacturers, with small variation across sessions. For most threshold-based acceleration and deceleration counts, StatSports devices showed good to moderate reliability, with moderate variation across sessions; Catapult showed good to poor reliability, with large variation across sessions. Inter-manufacturer agreement demonstrated moderate to very large effect sizes reported for most metrics.<bold>Conclusions: </bold>Reliability was suitable and consistent for measures of distance, velocity, and average acceleration. StatSports devices generally possessed suitable reliability and consistency for threshold-based accelerations and decelerations, though Catapult devices did not. Most metrics should not be compared between manufacturers. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14402440
- Volume :
- 25
- Issue :
- 4
- Database :
- Supplemental Index
- Journal :
- Journal of Science & Medicine in Sport
- Publication Type :
- Academic Journal
- Accession number :
- 155851054
- Full Text :
- https://doi.org/10.1016/j.jsams.2021.11.044