Measurement properties of an adductor strength-assessment system in professional Australian footballers
Journal article
Ryan, Samuel, Kempton, Thomas, Pacecca, Emidio and Coutts, Aaron J.. (2019). Measurement properties of an adductor strength-assessment system in professional Australian footballers. International Journal of Sports Physiology and Performance. 14(2), pp. 256 - 259. https://doi.org/10.1123/ijspp.2018-0264
Authors | Ryan, Samuel, Kempton, Thomas, Pacecca, Emidio and Coutts, Aaron J. |
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Abstract | Purpose: To examine the measurement properties of an adductor strength-assessment system in professional Australian footballers. Methods: Observational, longitudinal design. Test–retest reliability data were collected from 18 professional Australian footballers from 1 club on the same day during the 2017 Australian Football League season. Week-to-week variation data were collected on 45 professional Australian footballers from 1 club during the same season at 48, 72, and 120 h postmatch (rounds 1–23). Players lay beneath a GroinBar hip-strength testing system in supine position with their knee joints at an angle of 60°. Force (in newtons) was extracted for the left and right limbs of each player and a pain score from 0 to 10 (0 = no pain, 10 = maximum pain) was provided. Coefficient of variation (CV) and smallest worthwhile change were calculated on test–retest data. Signal-to-noise ratio was calculated for each major time point. Mean difference between force scores in a subgroup of players with and without groin pain (n = 18) was collected as evidence of construct validity for the system. Results: Test CV was 6.3% (4.9–9.0%). CV exceeded the smallest worthwhile change on both limbs. Intraclass correlation coefficient was .94. Signal-to-noise ratio ranged from 1.6 to 2.6 on average for 48, 72, and 120 h postmatch. Groin pain had a very likely moderate negative effect on adductor strength (effect size: 0.41). Conclusions: The system possesses greater measurement precision than dynamometry and sphygmomanometer adductor strength-assessment methods in professional Australian footballers. Increased groin pain reduced groin squeeze force production. Practitioners may interpret changes exceeding 6.3% in adductor strength as real. |
Keywords | training monitoring; reliability; sensitivity |
Year | 2019 |
Journal | International Journal of Sports Physiology and Performance |
Journal citation | 14 (2), pp. 256 - 259 |
Publisher | Human Kinetics, Inc. |
ISSN | 1555-0265 |
Digital Object Identifier (DOI) | https://doi.org/10.1123/ijspp.2018-0264 |
Scopus EID | 2-s2.0-85060930451 |
Page range | 256 - 259 |
Research Group | Sports Performance, Recovery, Injury and New Technologies (SPRINT) Research Centre |
Publisher's version | File Access Level Controlled |
Place of publication | United States of America |
https://acuresearchbank.acu.edu.au/item/8qv32/measurement-properties-of-an-adductor-strength-assessment-system-in-professional-australian-footballers
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