Nordbord Cihazı ile Hamstring Eksantrik Kas Kuvveti ve Ekstremite Asimetrisinin İncelenmesi

Abstract

Amaç: Çalışmada genç futbol oyuncularında hamstring eksantrik kas kuvveti ve ekstremite asimetrisi arasındaki ilişkinin gösterilmesi amaçlanmıştır. Gereç ve Yöntemler: İstanbul Başakşehir Futbol Kulübü'nün U17 ve U19 Elit akademi liginde mücadele eden, gerekli sağlık kontrollerinden geçmiş sağlıklı 30 lisanslı oyuncu çalışmaya katılmıştır. NordBord cihazı (Vald Performans, Newstead, Australia) kullanılarak nordik hamstring egzersizi ile eksantrik hamstring kas kuvvetine ve ekstremite asimetri değerlerine bakılmıştır. Bulgular: Sağ hamstring eksantrik kuvveti (r = -0.007, p = 0.971) ile asimetri ve ortalama kuvvet (r = -0.195, p = 0.303) ile asimetri düşük ve anlamlı olmayan korelasyonlara sahiptir. Sol hamstring kuvveti (r = -0.381, p = 0.038) ile asimetri arasında ise anlamlı fakat negatif yönlü korelasyon vardır. Torque değerleri ile asimetri arasında bir korelasyon bulunmamıştır (p > 0.05). Sonuç: Diz fleksör kas gruplarında yaralanmayı azaltan faktörlerden biri bacaklar arasında kuvvet dengesizliğinin olmamasıdır. Asimetri için ideal bir minimum değer üzerinde fikir birliği olmamasına rağmen, bazı uzmanlar %15'in altında olması gerektiğini önermektedir. Bizim çalışmamızda futbolcuların (30 erkek) ortalama asimetri değerleri, bazı uzmanlar tarafından önerilen değerin oldukça altında (8,55 ± 5,13) bulunmuştur. Çalışmamızda sağ hamstring kas kuvveti ile asitmetri arasındaki düşük korelasyon sonuçları, hamstring sağ kas kuvvetinin asimetri üzerinde belirgin bir etkisi olmadığını göstermektedir. Buna karşılık sol hamstring kas grubu kuvvetinin asimetriye negatif etkisi olduğu görülmüştür.

Keywords

• Futbol
• Nordic Curl
• Hamstring
• Asimetri
• Eksantrik Kuvvet.

Examination of Hamstring Eccentric Muscle Strength and Limb Asymmetry with Nordbord Device

Abstract

Aim: The aim of this study was to investigate the hamstring eccentric muscle strength and limb asymmetry in young football players. Materials and Methods: 30 licensed healthy players who competed in the U17 and U19 Elite academy league of Istanbul Başakşehir Football Club participated in the study. Eccentric hamstring strength and limb asymmetry values were assessed while performing nordic hamstring exercise using NordBord device (Vald Performance, Newstead, Australia). Results: Right hamstring eccentric force (r = -0.007, p = 0.971) and mean force (r = -0.195, p = 0.303) have low and non-significant correlations with asymmetry. Left hamstring strength (r = -0.381, p = 0.038) has significant but negative correlations with asymmetry. There is no correlation between torque and asymmetry (p > 0.05). Conclusion: One of the factors that reduces injury in eccentric knee flexor muscle groups is the absence of strength imbalance between the legs. Although there is no consensus on an ideal minimum value for asymmetry, some experts suggest that it should be below 15%. In our study, the asymmetry values of U17 and U19 football players (30 males) were found well below the value (8,55 ± 5,13) recommended by the experts. The low correlation results between right muscle strength and asymmetry in our study indicate that right hamstring muscle strength does not notably effect the asymmetry of the players. In contrast, it was found to have an effect on asymmetry for the left hamstring muscle group strength.

Keywords

• Football
• Nordic Curl
• Hamstring
• Asymmetry

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