Low Pre-Season Hamstring-to-Quadriceps Strength Ratio Identified in Players Who Further Sustained In-Season Hamstring Strain Injuries: A Retrospective Study from a Brazilian Serie A Team
A common pre-season injury prevention assessment conducted by professional football clubs is the hamstring-to-quadriceps (H:Q) strength ratio calculated by peak torque (PT). However, it is debatable whether players that present low pre-season H:Q ratios are more susceptible to further sustaining in-...
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| Format: | Article |
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MDPI AG
2023-04-01
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| Series: | Sports |
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| Online Access: | https://www.mdpi.com/2075-4663/11/4/89 |
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| author | Filipe Veeck Cassio V. Ruas Matheus Daros Pinto Rafael Grazioli Gustavo Pacheco Cardoso Thiago Albuquerque Lucas Schipper Henrique Gonçalves Valente Victor H. Santos Márcio Dornelles Paulo Rabaldo Clarice S. Rocha Bruno Manfredini Baroni Eduardo Lusa Cadore Ronei Silveira Pinto |
| author_facet | Filipe Veeck Cassio V. Ruas Matheus Daros Pinto Rafael Grazioli Gustavo Pacheco Cardoso Thiago Albuquerque Lucas Schipper Henrique Gonçalves Valente Victor H. Santos Márcio Dornelles Paulo Rabaldo Clarice S. Rocha Bruno Manfredini Baroni Eduardo Lusa Cadore Ronei Silveira Pinto |
| author_sort | Filipe Veeck |
| collection | DOAJ |
| description | A common pre-season injury prevention assessment conducted by professional football clubs is the hamstring-to-quadriceps (H:Q) strength ratio calculated by peak torque (PT). However, it is debatable whether players that present low pre-season H:Q ratios are more susceptible to further sustaining in-season hamstring strain injuries (HSI). Based upon retrospective data from a Brazilian Serie A football squad, a particular season came to our attention as ten out of seventeen (~59%) professional male football players sustained HSI. Therefore, we examined the pre-season H:Q ratios of these players. H:Q conventional (CR) and functional (FR) ratios, and the respective knee extensor/flexor PT from the limbs of players further sustaining in-season HSI (injured players, IP) were compared to the proportional number of dominant/non-dominant limbs from uninjured players (UP) in the squad. FR and CR were ~18–22% lower (<i>p</i> < 0.01), whereas quadriceps concentric PT was ~25% greater for IP than UP (<i>p</i> = 0.002). Low scores of FR and CR were correlated (<i>p</i> < 0.01) with high levels of quadriceps concentric PT (r = −0.66 to −0.77). In conclusion, players who sustained in-season HSI had lower pre-season FR and CR compared to UP, which appears to be associated with higher levels of quadriceps concentric torque than hamstring concentric or eccentric torque. |
| first_indexed | 2024-03-11T04:31:56Z |
| format | Article |
| id | doaj.art-4f488d6b33454528b1148214cb8f8f49 |
| institution | Directory Open Access Journal |
| issn | 2075-4663 |
| language | English |
| last_indexed | 2024-03-11T04:31:56Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sports |
| spelling | doaj.art-4f488d6b33454528b1148214cb8f8f492023-11-17T21:22:43ZengMDPI AGSports2075-46632023-04-011148910.3390/sports11040089Low Pre-Season Hamstring-to-Quadriceps Strength Ratio Identified in Players Who Further Sustained In-Season Hamstring Strain Injuries: A Retrospective Study from a Brazilian Serie A TeamFilipe Veeck0Cassio V. Ruas1Matheus Daros Pinto2Rafael Grazioli3Gustavo Pacheco Cardoso4Thiago Albuquerque5Lucas Schipper6Henrique Gonçalves Valente7Victor H. Santos8Márcio Dornelles9Paulo Rabaldo10Clarice S. Rocha11Bruno Manfredini Baroni12Eduardo Lusa Cadore13Ronei Silveira Pinto14Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Federal University of Rio Grande do Sul, Porto Alegre 90690-200, BrazilBrazilian Institute of Neuroscience and Neurotechnology, Institute of Physics Gleb Wataghin, University of Campinas, São Paulo 13083-854, BrazilSchool of Medical and Health Sciences, Edith Cowan University, Joondalup 6027, AustraliaExercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Federal University of Rio Grande do Sul, Porto Alegre 90690-200, BrazilMedical and Technical Department, Grêmio Foot-Ball Porto Alegrense, Porto Alegre 90250-590, BrazilMedical and Technical Department, Grêmio Foot-Ball Porto Alegrense, Porto Alegre 90250-590, BrazilMedical and Technical Department, Grêmio Foot-Ball Porto Alegrense, Porto Alegre 90250-590, BrazilMedical and Technical Department, Grêmio Foot-Ball Porto Alegrense, Porto Alegre 90250-590, BrazilMedical and Technical Department, Grêmio Foot-Ball Porto Alegrense, Porto Alegre 90250-590, BrazilMedical and Technical Department, Grêmio Foot-Ball Porto Alegrense, Porto Alegre 90250-590, BrazilMedical and Technical Department, Grêmio Foot-Ball Porto Alegrense, Porto Alegre 90250-590, BrazilExercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Federal University of Rio Grande do Sul, Porto Alegre 90690-200, BrazilPhysical Therapy Department, Federal University of Health Sciences of Porto Alegre, Porto Alegre 90050-170, BrazilExercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Federal University of Rio Grande do Sul, Porto Alegre 90690-200, BrazilExercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Federal University of Rio Grande do Sul, Porto Alegre 90690-200, BrazilA common pre-season injury prevention assessment conducted by professional football clubs is the hamstring-to-quadriceps (H:Q) strength ratio calculated by peak torque (PT). However, it is debatable whether players that present low pre-season H:Q ratios are more susceptible to further sustaining in-season hamstring strain injuries (HSI). Based upon retrospective data from a Brazilian Serie A football squad, a particular season came to our attention as ten out of seventeen (~59%) professional male football players sustained HSI. Therefore, we examined the pre-season H:Q ratios of these players. H:Q conventional (CR) and functional (FR) ratios, and the respective knee extensor/flexor PT from the limbs of players further sustaining in-season HSI (injured players, IP) were compared to the proportional number of dominant/non-dominant limbs from uninjured players (UP) in the squad. FR and CR were ~18–22% lower (<i>p</i> < 0.01), whereas quadriceps concentric PT was ~25% greater for IP than UP (<i>p</i> = 0.002). Low scores of FR and CR were correlated (<i>p</i> < 0.01) with high levels of quadriceps concentric PT (r = −0.66 to −0.77). In conclusion, players who sustained in-season HSI had lower pre-season FR and CR compared to UP, which appears to be associated with higher levels of quadriceps concentric torque than hamstring concentric or eccentric torque.https://www.mdpi.com/2075-4663/11/4/89isokineticmuscle strength balancepeak torquehamstring strain injuryfootball |
| spellingShingle | Filipe Veeck Cassio V. Ruas Matheus Daros Pinto Rafael Grazioli Gustavo Pacheco Cardoso Thiago Albuquerque Lucas Schipper Henrique Gonçalves Valente Victor H. Santos Márcio Dornelles Paulo Rabaldo Clarice S. Rocha Bruno Manfredini Baroni Eduardo Lusa Cadore Ronei Silveira Pinto Low Pre-Season Hamstring-to-Quadriceps Strength Ratio Identified in Players Who Further Sustained In-Season Hamstring Strain Injuries: A Retrospective Study from a Brazilian Serie A Team Sports isokinetic muscle strength balance peak torque hamstring strain injury football |
| title | Low Pre-Season Hamstring-to-Quadriceps Strength Ratio Identified in Players Who Further Sustained In-Season Hamstring Strain Injuries: A Retrospective Study from a Brazilian Serie A Team |
| title_full | Low Pre-Season Hamstring-to-Quadriceps Strength Ratio Identified in Players Who Further Sustained In-Season Hamstring Strain Injuries: A Retrospective Study from a Brazilian Serie A Team |
| title_fullStr | Low Pre-Season Hamstring-to-Quadriceps Strength Ratio Identified in Players Who Further Sustained In-Season Hamstring Strain Injuries: A Retrospective Study from a Brazilian Serie A Team |
| title_full_unstemmed | Low Pre-Season Hamstring-to-Quadriceps Strength Ratio Identified in Players Who Further Sustained In-Season Hamstring Strain Injuries: A Retrospective Study from a Brazilian Serie A Team |
| title_short | Low Pre-Season Hamstring-to-Quadriceps Strength Ratio Identified in Players Who Further Sustained In-Season Hamstring Strain Injuries: A Retrospective Study from a Brazilian Serie A Team |
| title_sort | low pre season hamstring to quadriceps strength ratio identified in players who further sustained in season hamstring strain injuries a retrospective study from a brazilian serie a team |
| topic | isokinetic muscle strength balance peak torque hamstring strain injury football |
| url | https://www.mdpi.com/2075-4663/11/4/89 |
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