The Relationship of Isokinetic Lower Limb Strengths of Elite Football Players with Their Playing Positions Before The Preparation Period / Elit Futbolcuların İzokinetik Alt Ekstremite Güçlerinin Hazırlık Dönemi Öncesindeki Oyun Pozisyonlarıyla İlişkisi

The Relationship of Isokinetic Lower Limb Strengths of Elite Football Players

Authors

  • Ömer AKSOY İstanbul Gelişim Üniversitesi
  • Mehmet SOYAL İstanbul Gelişim Üniversitesi
  • Ünal Can GÖKMEN İstanbul Gelişim Üniversitesi
  • Sefa KILIÇ Elite Training & Sports Medicine
  • Uğur CABA İstanbul Gelişim Üniversitesi
  • Onur YILDIRIM İstanbul Gelişim Üniversitesi

Keywords:

Elite Football Players, Positions, Isokinetic Lower Limb Strength

Abstract

ABSTRACT

 Aim: The aim of the study is to determine whether isokinetic lower limb strength parameters of football players during pre-season preparation period are related to their playing positions.

Material and Methods: A total of 19 professional male football players competing in the Turkish Football Federation Super League voluntarily participated in this study. The maximal strength of the participants' knee extensor and flexor muscles was assessed using an isokinetic dynamometer (Cybex NORM®, Humac, CA, USA), which enables the measurement of real-time isokinetic torque. Concentric strength tests of the knee flexors and extensors were performed at two angular velocities: 60°/s and 300°/s. To ensure familiarization with the testing protocol, participants completed four preliminary repetitions at each testing speed. During these repetitions, they were instructed to progressively increase their perceived effort to 25%, 50%, 75%, and 100%. Following the familiarization phase, a rest period of 10 seconds was provided prior to the actual isokinetic testing. Data were analysed using Pearson correlation analysis, and all statistical procedures were conducted using SPSS version 24.0.

Results: A strong positive correlation was observed between the right and left knee flexion values of defensive players at both 60°/s and 300°/s, indicating bilateral strength symmetry. In contrast, midfielders due to their more continuous sprinting efforts—tend to display different loading patterns than defenders or forwards.

Conclusions: Assessing isokinetic strength levels at the start of the preparation period and implementing appropriate training programs may help reduce injury risk and enhance individual performance.

Keywords: Elite Football Players, Isokinetic Lower Limb Strength, Positions.

 

 ÖZET

 Amaç: Bu çalışmanın amacı, futbolcuların sezon öncesi hazırlık döneminde izokinetik alt ekstremite kuvvet parametrelerinin oyun pozisyonlarıyla ilişkili olup olmadığını belirlemektir.

Materyal ve Metod: Türkiye Futbol Federasyonu Süper Ligi'nde yarışan toplam 19 profesyonel erkek futbolcu bu çalışmaya gönüllü olarak katıldı. Katılımcıların diz ekstansör ve fleksör kaslarının maksimum gücü, gerçek zamanlı izokinetik tork ölçümüne olanak tanıyan bir izokinetik dinamometre (Cybex NORM®, Humac, CA, ABD) kullanılarak değerlendirildi. Diz fleksör ve ekstansör kaslarının konsantrik kuvvet testleri iki açısal hızda gerçekleştirildi: 60°/s ve 300°/s. Test protokolüne alışmak için katılımcılar her test hızında dört ön tekrar yaptılar. Bu tekrarlar sırasında, algıladıkları eforu kademeli olarak %25, %50, %75 ve %100'e çıkarmaları istendi. Alışma aşamasının ardından, gerçek izokinetik testten önce 10 saniyelik bir dinlenme süresi verildi. Veriler Pearson korelasyon analizi kullanılarak analiz edildi ve tüm istatistiksel prosedürler SPSS 24.0 sürümü kullanılarak gerçekleştirildi.

Bulgular: Defans oyuncularının sağ ve sol diz fleksiyon değerleri arasında hem 60°/s hem de 300°/s hızlarda güçlü bir pozitif korelasyon gözlemlenmiştir, bu da iki taraflı kuvvet simetrisi olduğunu göstermektedir. Buna karşın, orta saha oyuncuları daha sürekli sprint çabaları nedeniyle defans veya forvetlerden farklı yükleme modelleri sergileme eğilimindedir.

Sonuç: Hazırlık döneminin başında izokinetik kuvvet seviyelerini değerlendirmek ve uygun antrenman programları uygulamak, sakatlık riskini azaltmaya ve bireysel performansı artırmaya yardımcı olabilir.

Anahtar Kelimeler: Elit Futbolcular, İzokinetik Alt Ekstremite Kuvveti, Pozisyonlar.

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Published

2026-04-30

How to Cite

AKSOY, Ömer, SOYAL, M., GÖKMEN, Ünal C., KILIÇ, S., CABA, U., & YILDIRIM, O. (2026). The Relationship of Isokinetic Lower Limb Strengths of Elite Football Players with Their Playing Positions Before The Preparation Period / Elit Futbolcuların İzokinetik Alt Ekstremite Güçlerinin Hazırlık Dönemi Öncesindeki Oyun Pozisyonlarıyla İlişkisi: The Relationship of Isokinetic Lower Limb Strengths of Elite Football Players. Anatolia Sport Research, 7(1), 1–12. Retrieved from https://www.anatoliasr.org/index.php/asr/article/view/205

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