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Convergent Validity, Reliability, and Sensitivity of a Running Test to Monitor Neuromuscular Fatigue.
- Source :
- International Journal of Sports Physiology & Performance; Sep2020, Vol. 15 Issue 8, p1067-1073, 7p, 1 Black and White Photograph, 1 Chart, 2 Graphs
- Publication Year :
- 2020
-
Abstract
- Purpose: To investigate the convergent validity, reliability, and sensitivity over a week of training of a standardized running test to measure neuromuscular fatigue. Methods: Twenty male rugby union players were recruited for the study, which took place during preseason. The standardized running test consisted of four 60-m runs paced at ~5 m·s<superscript>−1</superscript> with 33 seconds of recovery between trials. Data from micromechanical electrical systems were used to calculate a running-load index (RLI), which was a ratio between the mechanical load and the speed performed during runs. RLI was calculated by using either the entire duration of the run or a constant-velocity period. For each type of calculation, either an individual directional or the sum of the 3 components of the accelerometer was used. A measure of leg stiffness was used to assess the convergent validity of the RLI. Results: Unclear to large relationships between leg stiffness and RLI were found (r ranged from −.20 to.62). Regarding reliability, small to moderate (.47–.86) standardized typical errors were found. The sensitivity analysis showed that the leg stiffness presented a very likely trivial change over the course of 1 week of training, whereas RLI showed very likely small to a most likely large change. Conclusions: This study showed that RLI is a practical method to measure neuromuscular fatigue. In addition, such a methodology aligns with the constraint of elite team-sport setup due to its ease of implementation in practice. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15550265
- Volume :
- 15
- Issue :
- 8
- Database :
- Complementary Index
- Journal :
- International Journal of Sports Physiology & Performance
- Publication Type :
- Academic Journal
- Accession number :
- 145740096
- Full Text :
- https://doi.org/10.1123/ijspp.2019-0319