Cargando…
The Effects of Injury Preventive Warm-Up Programs on Knee Strength Ratio in Young Male Professional Soccer Players
PURPOSE: We aimed to investigate the effect of FIFA 11+ (11+) and HarmoKnee injury preventive warm-up programs on conventional strength ratio (CSR), dynamic control ratio (DCR) and fast/slow speed ratio (FSR) in young male professional soccer players. These ratios are related to the risk of injury t...
Autores principales: | , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2012
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3513304/ https://www.ncbi.nlm.nih.gov/pubmed/23226553 http://dx.doi.org/10.1371/journal.pone.0050979 |
_version_ | 1782251912946515968 |
---|---|
author | Daneshjoo, Abdolhamid Mokhtar, Abdul Halim Rahnama, Nader Yusof, Ashril |
author_facet | Daneshjoo, Abdolhamid Mokhtar, Abdul Halim Rahnama, Nader Yusof, Ashril |
author_sort | Daneshjoo, Abdolhamid |
collection | PubMed |
description | PURPOSE: We aimed to investigate the effect of FIFA 11+ (11+) and HarmoKnee injury preventive warm-up programs on conventional strength ratio (CSR), dynamic control ratio (DCR) and fast/slow speed ratio (FSR) in young male professional soccer players. These ratios are related to the risk of injury to the knee in soccer players. METHODS: Thirty-six players were divided into 3 groups; FIFA 11+, HarmoKnee and control (n = 12 per group). These exercises were performed 3 times per week for 2 months (24 sessions). The CSR, DCR and FSR were measured before and after the intervention. RESULTS: After training, the CSR and DCR of knee muscles in both groups were found to be lower than the published normal values (0.61, 0.72, and 0.78 during 60°.s(−1), 180°.s(−1) and 300°.s(−1), respectively). The CSR (60°.s(−1)) increased by 8% and FSR in the quadriceps of the non-dominant leg by 8% in the 11+. Meanwhile, the DCR in the dominant and non-dominant legs were reduced by 40% and 30% respectively in the 11+. The CSR (60°.s(−1)) in the non-dominant leg showed significant differences between the 11+, HarmoKnee and control groups (p = 0.02). As for the DCR analysis between groups, there were significant differences in the non-dominant leg between both programs with the control group (p = 0.04). For FSR no significant changes were found between groups. CONCLUSIONS: It can be concluded that the 11+ improved CSR and FSR, but the HarmoKnee program did not demonstrate improvement. We suggest adding more training elements to the HarmoKnee program that aimed to enhance hamstring strength (CSR, DCR and FSR). Professional soccer players have higher predisposition of getting knee injuries because hamstring to quadriceps ratio were found to be lower than the average values. It seems that the 11+ have potentials to improve CSR and FSR as well as prevent knee injuries in soccer players. |
format | Online Article Text |
id | pubmed-3513304 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-35133042012-12-05 The Effects of Injury Preventive Warm-Up Programs on Knee Strength Ratio in Young Male Professional Soccer Players Daneshjoo, Abdolhamid Mokhtar, Abdul Halim Rahnama, Nader Yusof, Ashril PLoS One Research Article PURPOSE: We aimed to investigate the effect of FIFA 11+ (11+) and HarmoKnee injury preventive warm-up programs on conventional strength ratio (CSR), dynamic control ratio (DCR) and fast/slow speed ratio (FSR) in young male professional soccer players. These ratios are related to the risk of injury to the knee in soccer players. METHODS: Thirty-six players were divided into 3 groups; FIFA 11+, HarmoKnee and control (n = 12 per group). These exercises were performed 3 times per week for 2 months (24 sessions). The CSR, DCR and FSR were measured before and after the intervention. RESULTS: After training, the CSR and DCR of knee muscles in both groups were found to be lower than the published normal values (0.61, 0.72, and 0.78 during 60°.s(−1), 180°.s(−1) and 300°.s(−1), respectively). The CSR (60°.s(−1)) increased by 8% and FSR in the quadriceps of the non-dominant leg by 8% in the 11+. Meanwhile, the DCR in the dominant and non-dominant legs were reduced by 40% and 30% respectively in the 11+. The CSR (60°.s(−1)) in the non-dominant leg showed significant differences between the 11+, HarmoKnee and control groups (p = 0.02). As for the DCR analysis between groups, there were significant differences in the non-dominant leg between both programs with the control group (p = 0.04). For FSR no significant changes were found between groups. CONCLUSIONS: It can be concluded that the 11+ improved CSR and FSR, but the HarmoKnee program did not demonstrate improvement. We suggest adding more training elements to the HarmoKnee program that aimed to enhance hamstring strength (CSR, DCR and FSR). Professional soccer players have higher predisposition of getting knee injuries because hamstring to quadriceps ratio were found to be lower than the average values. It seems that the 11+ have potentials to improve CSR and FSR as well as prevent knee injuries in soccer players. Public Library of Science 2012-12-03 /pmc/articles/PMC3513304/ /pubmed/23226553 http://dx.doi.org/10.1371/journal.pone.0050979 Text en © 2012 Daneshjoo et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article Daneshjoo, Abdolhamid Mokhtar, Abdul Halim Rahnama, Nader Yusof, Ashril The Effects of Injury Preventive Warm-Up Programs on Knee Strength Ratio in Young Male Professional Soccer Players |
title | The Effects of Injury Preventive Warm-Up Programs on Knee Strength Ratio in Young Male Professional Soccer Players |
title_full | The Effects of Injury Preventive Warm-Up Programs on Knee Strength Ratio in Young Male Professional Soccer Players |
title_fullStr | The Effects of Injury Preventive Warm-Up Programs on Knee Strength Ratio in Young Male Professional Soccer Players |
title_full_unstemmed | The Effects of Injury Preventive Warm-Up Programs on Knee Strength Ratio in Young Male Professional Soccer Players |
title_short | The Effects of Injury Preventive Warm-Up Programs on Knee Strength Ratio in Young Male Professional Soccer Players |
title_sort | effects of injury preventive warm-up programs on knee strength ratio in young male professional soccer players |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3513304/ https://www.ncbi.nlm.nih.gov/pubmed/23226553 http://dx.doi.org/10.1371/journal.pone.0050979 |
work_keys_str_mv | AT daneshjooabdolhamid theeffectsofinjurypreventivewarmupprogramsonkneestrengthratioinyoungmaleprofessionalsoccerplayers AT mokhtarabdulhalim theeffectsofinjurypreventivewarmupprogramsonkneestrengthratioinyoungmaleprofessionalsoccerplayers AT rahnamanader theeffectsofinjurypreventivewarmupprogramsonkneestrengthratioinyoungmaleprofessionalsoccerplayers AT yusofashril theeffectsofinjurypreventivewarmupprogramsonkneestrengthratioinyoungmaleprofessionalsoccerplayers AT daneshjooabdolhamid effectsofinjurypreventivewarmupprogramsonkneestrengthratioinyoungmaleprofessionalsoccerplayers AT mokhtarabdulhalim effectsofinjurypreventivewarmupprogramsonkneestrengthratioinyoungmaleprofessionalsoccerplayers AT rahnamanader effectsofinjurypreventivewarmupprogramsonkneestrengthratioinyoungmaleprofessionalsoccerplayers AT yusofashril effectsofinjurypreventivewarmupprogramsonkneestrengthratioinyoungmaleprofessionalsoccerplayers |