Change of Direction Movement Evaluation in Soccer-Specific Environment with Inertial Measurement Units: Guiding Practice and Test Tasks in Youth Soccer
| dc.contributor.advisor | Pasanen, Kati | |
| dc.contributor.author | Alanen, Aki-Matti | |
| dc.contributor.committeemember | Benson, Lauren C. | |
| dc.contributor.committeemember | Jordan, Matthew J. | |
| dc.contributor.committeemember | Ferber, Reed | |
| dc.date | 2023-11 | |
| dc.date.accessioned | 2023-06-05T18:38:22Z | |
| dc.date.available | 2023-06-05T18:38:22Z | |
| dc.date.issued | 2023-06-02 | |
| dc.description.abstract | Soccer players perform a multitude of change of direction (COD) movements while playing. This multiplanar movement has been related to both performance and injury-risk in previous studies. However, traditional testing of COD ability has been done with preplanned protocols that lack the aspect of perception and reaction and commonly use only running time as the main variable. Therefore, the main objectives of this thesis were to explore novel methods of COD testing with the use of inertial measurement units (IMUs) in both preplanned soccer-specific tests and during game-play. The results of Chapter Three suggest that neither peak resultant acceleration (PRA) nor peak angular velocity (PAV) is a reliable metric in final foot contact (FFC) analysis of 180° pivot turns. The intra-class correlations (ICC) for pivot turns on both sides were unacceptable. However, when separating females and males it was found that the reliability in female participants was significantly better. In Chapter Four, the in-season variability of PRA was found to be different between previously injured players and injury free players, specifically during the FFC of 180° pivot turns. Chapter Five expanded upon the game-specific demands on COD movements based on playing positions. Significant differences in volume and types of CODs by playing position were found, which raises the question if youth soccer player testing for multiplanar movement abilities, should consider specific playing position related demands better in the future. Chapter Six complemented the studies by providing results of measurements obtained with IMUs in relation to situational patterns during game-play. The findings indicated that running speed, COD angle, pressure from opposing player, and contact with another player prior or during the cut would increase the acceleration during the COD, thus increasing the demands of the neuromuscular system. In conclusion, following one or two specific metrics at single timepoints to analyze COD ability is not recommended. Future research should search for methods involving perception-reaction while performing COD and these could be complemented with wearable technology measures. The combinations of multiple variables could be used to follow-up fluctuations of player performance through a longer follow-up period. | |
| dc.identifier.citation | Alanen, A.-M. (2023). Change of direction movement evaluation in soccer-specific environment with inertial measurement units: guiding practice and test tasks in youth soccer (Doctoral thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. | |
| dc.identifier.uri | https://hdl.handle.net/1880/116599 | |
| dc.identifier.uri | https://dx.doi.org/10.11575/PRISM/41442 | |
| dc.language.iso | en | |
| dc.publisher.faculty | Kinesiology | |
| dc.publisher.institution | University of Calgary | |
| dc.rights | University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission. | |
| dc.subject | Change of direction movement | |
| dc.subject | Youth soccer | |
| dc.subject | Wearable technology | |
| dc.subject | Injury prevention | |
| dc.subject.classification | Education--Health | |
| dc.subject.classification | Education--Technology | |
| dc.title | Change of Direction Movement Evaluation in Soccer-Specific Environment with Inertial Measurement Units: Guiding Practice and Test Tasks in Youth Soccer | |
| dc.type | doctoral thesis | |
| thesis.degree.discipline | Kinesiology | |
| thesis.degree.grantor | University of Calgary | |
| thesis.degree.name | Doctor of Philosophy (PhD) | |
| ucalgary.thesis.accesssetbystudent | I do not require a thesis withhold – my thesis will have open access and can be viewed and downloaded publicly as soon as possible. |