The Effects of Eccentric-Concentric Isokinetic Muscle Strength Training on Quadriceps Femoris Muscle Architecture, Muscle Strength and Proprioception in Healthy Young People

Abstract

Objective: This study aimed to compare and evaluate the efficacy of eccentric and concentric training on quadriceps femoris muscle architecture, muscle strength and proprioception in healthy young people. Materials and Methods: Sixty healthy subjects were divided into two groups concentric training (n=30), and eccentric training (n=30). The outcome measurements were Quadriceps Femoris (QF) muscle architecture, muscle strength and knee proprioception. The training was carried out on the subjects’ dominant side leg (right), and the participants were trained three times a week for 12 weeks. The measurements were applied before and after training. QF muscle architecture was assessed by using ultrasonography. Isokinetic muscle strength and knee proprioception were assessed with the isokinetic dynamometer. Results: The results showed a significant increase in QF architecture, muscle strength and knee proprioception after the training in the two groups (p<0.05). When we compared the training groups, there were no differences regarding the outcome of all variables between groups (p>0.05). Conclusion: Training techniques, including eccentric and concentric training, positively affected QF muscle architecture, muscle strength, and knee proprioception (p<0.05), but there is no superiority between each other (p>0.05).

Keywords

• Eccentric training
• muscle architecture
• muscle strength
• quadriceps femoris
• proprioception

Eksentrik-Konsentrik İzokinetik Kas Kuvveti Eğitiminin Sağlıklı Gençlerde Kuadriseps Femoris Kas Mimarisi, Kas Kuvveti ve Propriyosepsiyon Üzerine Etkileri

Öz

Amaç: Bu çalışmanın amacı sağlıklı kişilerde eksentrik ve konsentrik eğitimlerin kuadriseps femoris kasının kas mimarisi, kas kuvveti ve propriosepsiyona etkilerini değerlendirmek ve karşılaştırmaktır. Materyal ve Metot: 60 sağlıklı kişi konsentrik (n=30) ve eksentrik (n=30) kas eğitimi olarak iki gruba ayrıldı. M. Quadriseps Femoris (QF) kas mimarisi, kas kuvveti ve diz propriosepsiyonu değerlendirildi. Eğitim dominant taraf bacak (sağ) üzerinde uygulandı ve katılımcılar haftada 3 kez, 12 hafta boyunca eğitime devam etti. Değerlendirmeler eğitim öncesi ve eğitim sonrası olarak yapıldı. QF kas mimarisi ultrason ile değerlendirildi. Kas kuvveti ve diz propriosepsiyonu izokinetik dinamometre ile değerlendirildi. Bulgular: Bu çalışmanın sonuçlarına göre QF kas mimarisi, kas kuvveti ve diz propriosepsiyonu her iki grupta benzer şekilde artış gösterdi (p<0,05). Eğitim gruplarını karşılaştırdığımızda tüm değerlendirme sonuçları açısından her iki grup arasında fark bulunmadı (p>0,05). Sonuç: Sonuçlar eksentrik ve konsentrik eğitimlerin QF kas mimarisi, kas kuvveti ve diz propriosepsiyonu üzerine pozitif etkilerinin olduğunu (p<0,05), fakat birbirleri üzerine üstünlüklerinin olmadığını işaret etmiştir (p>0,05).

Anahtar Kelimeler

• Eksentrik eğitim
• kas mimarisi
• kas kuvveti
• quadriseps femoris
• propriosepsiyon

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