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Isokinetic muscle imbalance and knee-joint injuries. A prospective blind study.
Abstract
One hundred and seventy-two randomly selected high-school football players underwent pre-season isokinetic muscle-testing to determine if there was any relationship between an imbalance in thigh-muscle function and the occurrence of knee injuries. Strength, power, power-endurance, and time to maximum tension were measured for the quadriceps and hamstring muscle groups for both lower extremities of each athlete. The resulting values were utilized to see if a difference of 10 per cent or more between the right and left extremities or between the mean and actual hamstring-to-quadriceps ratio of the individual extremity would result in more knee injuries. No such relationship was found.
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“Some authors [27, 28] have pointed out that dominant to non-dominant strength imbalances are normal to some extent.”
From Comparison of muscle activation imbalance following core stability or general exercises in nonspecific low back pain: a quasi-randomized controlled trial (2020) · cites this paper as [27]
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Metadata
- Authors
- Grace, T. G., Sweetser, E. R., Nelson, M. A., Ydens, L. R., & Skipper, B. J.
- Venue
- The Journal of Bone & Joint Surgery
- Published
- 1984-06
- Volume
- 66
- Issue
- 5
- Pages
- 734-740
- ISSN
- 0021-9355 (ISSN-L)
- OpenAlex
- W2189545724
- Cited by
- 176
- References
- 0
- Citations by year
- 2026: 1 · 2025: 1 · 2024: 3 · 2023: 2 · 2022: 4 · 2021: 1 · 2020: 6 · 2019: 7 · 2018: 3 · 2017: 5 · 2016: 4 · 2015: 7 · 2014: 7 · 2013: 9 · 2012: 7
- FWCI
- 2.28
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Bone and Joint Surgery (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Surgery › Knee injuries and reconstruction techniques
- Health Sciences › Medicine › Orthopedics and Sports Medicine › Sports injuries and prevention
- Physical Sciences › Engineering › Biomedical Engineering › Lower Extremity Biomechanics and Pathologies
- Keywords
- knee injury, hamstring-to-quadriceps ratio, quadriceps strength, hamstring strength, power endurance, high school football players, knee injury risk factors
- MeSH terms
- Adolescent, Athletic Injuries, Biomechanical Phenomena, Football, Humans, Knee Injuries, Male, Muscles, Prospective Studies
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