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Limited positive effects on jump-landing technique in girls but not in boys after 8 weeks of injury prevention exercise training in youth football
PURPOSE: To evaluate changes in jump-landing technique in football-playing boys and girls after 8 weeks of injury prevention training. METHODS: Four boys’ and four girls’ teams (mean age 14.1 ± 0.8 years) were instructed to use either the original Knee Control injury prevention exercise programme (I...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer Berlin Heidelberg
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6994440/ https://www.ncbi.nlm.nih.gov/pubmed/31541293 http://dx.doi.org/10.1007/s00167-019-05721-x |
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author | Lindblom, Hanna Waldén, Markus Carlfjord, Siw Hägglund, Martin |
author_facet | Lindblom, Hanna Waldén, Markus Carlfjord, Siw Hägglund, Martin |
author_sort | Lindblom, Hanna |
collection | PubMed |
description | PURPOSE: To evaluate changes in jump-landing technique in football-playing boys and girls after 8 weeks of injury prevention training. METHODS: Four boys’ and four girls’ teams (mean age 14.1 ± 0.8 years) were instructed to use either the original Knee Control injury prevention exercise programme (IPEP) or a further developed IPEP, Knee Control + , at every training session for 8 weeks. Baseline and follow-up testing of jump-landing technique included drop vertical jumps (DVJ), assessed subjectively and with two-dimensional movement analysis, and tuck jump assessment (TJA). RESULTS: Only minor differences in intervention effects were seen between the two IPEPs, and results are therefore presented for both intervention groups combined. At baseline 30% of the boys showed good knee control during the DVJ, normalised knee separation distances of 77–96% (versus hip) and a median of 3 flaws during the TJA. Among girls, 22% showed good knee control, normalised knee separation distances of 67–86% and a median of 4 flaws during the TJA. At follow-up, boys and girls performed significantly more jumps during TJA. No changes in jump-landing technique were seen in boys, whereas girls improved their knee flexion angle at initial contact in the DVJ (mean change + 4.7°, p < 0.001, 95% CI 2.36–6.99, d = 0.7) and their TJA total score (− 1 point, p = 0.045, r = − 0.4). CONCLUSION: The study showed small positive effects on jump-landing technique in girls, but not in boys, after 8 weeks of injury prevention training. LEVEL OF EVIDENCE: Level II. TRIAL REGISTRATION: Clinical Trials gov identifier: NCT03251404 ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1007/s00167-019-05721-x) contains supplementary material, which is available to authorized users. |
format | Online Article Text |
id | pubmed-6994440 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Springer Berlin Heidelberg |
record_format | MEDLINE/PubMed |
spelling | pubmed-69944402020-02-14 Limited positive effects on jump-landing technique in girls but not in boys after 8 weeks of injury prevention exercise training in youth football Lindblom, Hanna Waldén, Markus Carlfjord, Siw Hägglund, Martin Knee Surg Sports Traumatol Arthrosc Knee PURPOSE: To evaluate changes in jump-landing technique in football-playing boys and girls after 8 weeks of injury prevention training. METHODS: Four boys’ and four girls’ teams (mean age 14.1 ± 0.8 years) were instructed to use either the original Knee Control injury prevention exercise programme (IPEP) or a further developed IPEP, Knee Control + , at every training session for 8 weeks. Baseline and follow-up testing of jump-landing technique included drop vertical jumps (DVJ), assessed subjectively and with two-dimensional movement analysis, and tuck jump assessment (TJA). RESULTS: Only minor differences in intervention effects were seen between the two IPEPs, and results are therefore presented for both intervention groups combined. At baseline 30% of the boys showed good knee control during the DVJ, normalised knee separation distances of 77–96% (versus hip) and a median of 3 flaws during the TJA. Among girls, 22% showed good knee control, normalised knee separation distances of 67–86% and a median of 4 flaws during the TJA. At follow-up, boys and girls performed significantly more jumps during TJA. No changes in jump-landing technique were seen in boys, whereas girls improved their knee flexion angle at initial contact in the DVJ (mean change + 4.7°, p < 0.001, 95% CI 2.36–6.99, d = 0.7) and their TJA total score (− 1 point, p = 0.045, r = − 0.4). CONCLUSION: The study showed small positive effects on jump-landing technique in girls, but not in boys, after 8 weeks of injury prevention training. LEVEL OF EVIDENCE: Level II. TRIAL REGISTRATION: Clinical Trials gov identifier: NCT03251404 ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1007/s00167-019-05721-x) contains supplementary material, which is available to authorized users. Springer Berlin Heidelberg 2019-09-20 2020 /pmc/articles/PMC6994440/ /pubmed/31541293 http://dx.doi.org/10.1007/s00167-019-05721-x Text en © The Author(s) 2019 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. |
spellingShingle | Knee Lindblom, Hanna Waldén, Markus Carlfjord, Siw Hägglund, Martin Limited positive effects on jump-landing technique in girls but not in boys after 8 weeks of injury prevention exercise training in youth football |
title | Limited positive effects on jump-landing technique in girls but not in boys after 8 weeks of injury prevention exercise training in youth football |
title_full | Limited positive effects on jump-landing technique in girls but not in boys after 8 weeks of injury prevention exercise training in youth football |
title_fullStr | Limited positive effects on jump-landing technique in girls but not in boys after 8 weeks of injury prevention exercise training in youth football |
title_full_unstemmed | Limited positive effects on jump-landing technique in girls but not in boys after 8 weeks of injury prevention exercise training in youth football |
title_short | Limited positive effects on jump-landing technique in girls but not in boys after 8 weeks of injury prevention exercise training in youth football |
title_sort | limited positive effects on jump-landing technique in girls but not in boys after 8 weeks of injury prevention exercise training in youth football |
topic | Knee |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6994440/ https://www.ncbi.nlm.nih.gov/pubmed/31541293 http://dx.doi.org/10.1007/s00167-019-05721-x |
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