Investigation of knee flexor and extensor muscle strength in athletes with and without trunk muscle strength asymmetry.

Introduction: Lower extremity injuries may be associated with proximal muscle weakness and decreased motor control. Our study aims to examine knee flexor and extensor muscle strength in athletes with and without trunk muscle strength asymmetry. Materials and methods: This matching control study invo...

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Publicado en:Advances in Rehabilitation Vol. 35; no. 1; pp. 1 - 9
Autores principales: Balcı, Aydın, Ünüvar, Ezgi, Akınoğlu, Bihter, Kocahan, Tuğba, Hasanoğlu, Adnan
Formato: research tables/charts Journal Article
Publicado: Paradigm Publishing Services 2021
Acceso en línea:Ver este registro en EBSCOhost
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      jtl: Advances in Rehabilitation
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      dt: 2021
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        10.5114/areh.2021.102314
        149701108
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        atl: Investigation of knee flexor and extensor muscle strength in athletes with and without trunk muscle strength asymmetry.
      aug:
        au:
          Balcı, Aydın
          Ünüvar, Ezgi
          Akınoğlu, Bihter
          Kocahan, Tuğba
          Hasanoğlu, Adnan
        affil: Ankara Yıldırım Beyazıt University, Yenimahalle Training and Research Hospital, Sports Medicine Department, Turkey
      sug:
        subj:
          Athletes
          Knee Joint Physiology
          Torso Physiology
          Muscle, Skeletal Physiology
          Muscle Strength Evaluation
          Knee Injuries Risk Factors
          Athletic Injuries Risk Factors
          Risk Assessment
          Human
          Male
          Female
          Adolescence
          T-Tests
          Mann-Whitney U Test
          Athletic Injuries Prevention and Control
          Muscle Strengthening
          Descriptive Statistics
          Data Analysis Software
          Torque
          Range of Motion
          Adolescent: 13-18 years
          Male
          Female
      ab: Introduction: Lower extremity injuries may be associated with proximal muscle weakness and decreased motor control. Our study aims to examine knee flexor and extensor muscle strength in athletes with and without trunk muscle strength asymmetry. Materials and methods: This matching control study involved a total of 80 athletes; 40 athletes with asymmetrical trunk muscle strength (asymmetric group) and 40 athletes with symmetrical trunk muscle strength (symmetrical group). Strength measurements of trunk and knee muscles were made with the IsoMed 2000 isokinetic device. Independent Samples T-Test or Mann Whitney-U test was used to compare variables according to their distribution status. The statistical error level was determined as p < 0.05. Results: In the symmetric group, the isokinetic muscle strength of the trunk flexor muscles was stronger than the asymmetric group (p < 0.05) and the trunk extensor muscles were weaker than the asymmetric group (p < 0.05). The Limb Symmetry Index (LSI) value of the two groups at 60°/sec was significantly different (p = 0.032), and the dominant side in the symmetric group and the non-dominant side in the asymmetric group were stronger than the other side. Conclusions: This result may be associated with knee joint injuries which are common in athletes with weak muscle strength, and can be attributed to the literature knowledge that core muscle weakness may increase the frequency of knee injury. Therefore, symmetrical core strengthening training can prevent possible injuries of athletes with asymmetrical trunk muscle strength. However, we think that more studies are needed to reveal this relationship.
      pubtype: Academic Journal
      doctype:
        research
        tables/charts
        Journal Article
      ougenre: Article
    language: English
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