Achenbach, Leonard and Krutsch, Werner and Koch, Matthias and Zeman, Florian and Nerlich, Michael and Angele, Peter (2019) Contact times of change-of-direction manoeuvres are influenced by age and the type of sports: a novel protocol using the SpeedCourt((R)) system. KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY, 27 (3). pp. 991-999. ISSN 0942-2056, 1433-7347
Full text not available from this repository. (Request a copy)Abstract
PurposeSide-to-side asymmetry in side-cutting manoeuvres is a known risk factor for severe knee injury. Potential leg asymmetry during ground contact times of different change-of-direction manoeuvres was evaluated in athletes by means of the recently developed SpeedCourt((R)) system. The hypotheses were that ground contact times and the limb symmetry index are affected by age and the type of sports.MethodsOne-hundred and sixty-five athletes (149 men, 16 women, age 16.55.1) of popular team sports such as football, team handball and baseball were assessed by means of three different tests [side-hop, lateral change-of-direction (COD) and diagonal COD] using the SpeedCourt((R)) system. Analysis included the factors age, sex, type of sports, ground contact time, leg symmetry index and limb dominance.ResultsDuring lateral but not diagonal COD tests, football players had shorter contact times than players of team handball (p=0.026) and baseball (p=0.015) of the same age group. The side-hop tests yielded differences in the leg symmetry index between players <16years and players >16years (p<0.01). Mean ground contact time differed in each of the side-hop, lateral COD and diagonal COD tests (143.520.0 vs. 256.2 +/- 66.1 vs. 320.4 +/- 55.0). Contact times and test durations of side-hop, lateral COD and diagonal COD tests were shorter for older players (p<0.01).Conclusions Ground contact times of side-hop and change-of-direction manoeuvres are influenced by age, the type of sports and limb dominance. Such information is fundamental for future sports medicine research and needs to be considered in pre-season screening or when used as a criterion for return-to-competition of players with previous severe knee injury. Assessment of change-of-direction manoeuvres should be included in future return-to-competition test batteries.Level of evidence III.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CRUCIATE LIGAMENT RECONSTRUCTION; NEUROMUSCULAR CONTROL; PHYSICAL PERFORMANCE; ACL RECONSTRUCTION; LEG DOMINANCE; LOWER-LIMB; ANTERIOR; INJURY; RETURN; RISK; ACL; Severe; Knee; Injury; Rehabilitation; Return-to-sport; SpeedCourt((R)); Side; Differences; Asymmetry; Change of direction; Side-hop |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Unfallchirurgie Medicine > Zentren des Universitätsklinikums Regensburg > Zentrum für Klinische Studien |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 16 Apr 2020 07:51 |
| Last Modified: | 16 Apr 2020 07:51 |
| URI: | https://pred.uni-regensburg.de/id/eprint/27452 |
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