Can the Use of an External: Internal Ratio During Standardised Small-Sided Games be a Detector of Fatigue in Professional Adolescent Soccer Players?
Moody, Jeremy A.
Byrne, Paul J.
MetadataShow full item record
The aim of the investigation was to explore whether the external: internal(E: I) ratio during a standardised small-sided game (SSG) was impacted by fatigue monitoring methods in professional adolescent soccer players. Ten professional male soccer players (Mean ± SD; Age: 19.6 ± 1.4 years) data from seven standardised SSG’s (6v6+GK, 2x4 min, 40 x 35m) were analysed during the study. Total distance (TD):Heart rate exertion (HRe), PlayerLoadTM(PL): HReand Explosive distance (ED): HRewere the E: Iratio’s analysed from the SSG’s. Morning perceived wellness score, using a customised self-report questionnaire (energy levels, sleep and muscle soreness), and Flight time: Contraction time (FT:CT), taken from a counter-movement jump (CMJ) performed prior totraining, were used as markers of fatigue in the study. A Z-score of -1 was considered ‘fatigued’. Mixed-effect linear models revealed a significant effect for perceived wellness Z-score on TD: HRe, PL: HReand ED: HRe, which resulted in a small increase in allE: Iratios. FT: CTZ-score resulted in a non-significant, trivial effect on TD: HRe, PL: HReand ED: HRe. The results suggest E:I ratiosare influenced by subjective fatigue, thus, E: Iratio’s may be a non-invasive tool for fatigue detection. However, caution should be taken when interpreting an increase in E:I ratio, and, therefore, the use of E: Iratio’s as a means for fatigue detection requires further investigation.
ARC Journal of Research in Sports Medicine;
Derbidge, C., Moody, J. & Byrne, P. (2020) 'Can the Use of an External: Internal Ratio During Standardised Small-Sided Games be a Detector of Fatigue in Professional Adolescent Soccer Players?', ARC Journal of Research in Sports Medicine.4(2) pp 40-47.
Article published in ARC Journal of Research in Sports Medicine available at https://www.arcjournals.org/journal-of-research-in-sports-medicine/volume-4-issue-2/
Cardiff Metropolitan University (Grant ID: Cardiff Metropolian (Internal))
- Sport Research Groups 
Showing items related by title, author, subject and abstract.
Crutchley, Reagan (University of Wales Institute Cardiff, 2012)The purpose of this study was to examine the effect that fatigue had on balance and proprioception and apply the study’s findings to previous research in regards to injury risk. Research has ...
Strutzenberger, Gerda; Moore, Joeseph; Griffiths, Hywel; Schwameder, Hermann; Irwin, Gareth (Taylor & Francis, 2016)Kinesio-tape® has been suggested to increase blood circulation and lymph flow and might influence the muscle's ability to maintain strength during fatigue. Therefore, the aim of this study was to investigate the influence ...
The effects of fatigue on the kinematics of the line-out throw in Rugby Union- a coaching perspective Anson, Patrick (University of Wales Institute, Cardiff, 2005)Aim: Based on the training principle of specificity combined with the employment of biomechanical techniques, the purpose of this study was to quantify the effects of fatigue on performance related kinematics of the ...