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Journals / Herkes için Spor ve Rekreasyon Dergisi / 2026 / Volume: 8 Issue: 2

Linking Isokinetic Strength to Functional Performance: A Correlational Analysis in Elite Male Handball Players

İzokinetik Kuvvet ile Fonksiyonel Performansın İlişkilendirilmesi: Elit Erkek Hentbol Oyuncularında Korelasyonel Bir Analiz

Soner Akgün(ARTVIN CORUH UNIVERSITY)0000-0003-1411-2778
Menderes Kabadayı(ONDOKUZ MAYIS UNIVERSITY)0000-0002-4472-7485
Ali Kerim Yılmaz(ONDOKUZ MAYIS UNIVERSITY)0000-0002-0046-6711
Pages
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Publication Date
2026-06-30
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

In conclusion, it demonstrates that improving overall body stability can enhance both upper and lower extremity performance.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:The aim of the study was to examine the relationship between isokinetic and function-al performance tests used to determine upper and lower limb strength in elite handball players. 22 male volunteers participated in the study.
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Key Findings & Data:Concentric/concentric (Con/Con) knee extension (EX) and flexion (FLX), shoulder internal rotation (IR) and external ro-tation (ER) tests at angular velocities of 60, 180 and 240°/sec and nine functional per-formance tests (FPT) were performed in lower and upper extremities of the partici-pants.
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Conclusion & Impact:In conclusion, it demonstrates that improving overall body stability can enhance both upper and lower extremity performance.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:functional performance tests · handball · isokinetic strength

Abstract

The aim of the study was to examine the relationship between isokinetic and function-al performance tests used to determine upper and lower limb strength in elite handball players. 22 male volunteers participated in the study. Concentric/concentric (Con/Con) knee extension (EX) and flexion (FLX), shoulder internal rotation (IR) and external ro-tation (ER) tests at angular velocities of 60, 180 and 240°/sec and nine functional per-formance tests (FPT) were performed in lower and upper extremities of the partici-pants. There was no significant difference in isokinetic knee strengths in EX and FLX phases at all angular velocities on dominant (DS) and non-dominant (NDS) sides. There were significant differences in IR and ER isokinetic shoulder strength in favor of DS, while single leg hop for distance (SH) and medial rotation hop for distane (MRH) in favor of NDS. No significant correlation was observed be-tween lower extremity FPTs and isokinetic knee strength. A moderate positive correla-tion was found between isokinetic shoulder and knee strengths at some angular veloci-ties. In conclusion, it demonstrates that improving overall body stability can enhance both upper and lower extremity performance. Additionally, since the participants' asymmetric strength ratios are within a safe range, it can be said that under normal conditions the likelihood of injury is low.

Özet

Çalışmanın amacı, elit hentbol oyuncularında üst ve alt ekstremite kuvvetini belirlemek için kullanılan izokinetik ve fonksiyonel performans testleri arasındaki ilişkiyi incelemektir. Çalışmaya 22 erkek gönüllü katılmıştır. Katılımcıların alt ve üst ekstremitelerinde 60, 180 ve 240°/sn açısal hızlarda konsantrik/konsantrik (Con/Con) diz ekstansiyonu (EX) ve fleksiyonu (FLX) ile omuz internal rotasyon (IR) ve eksternal rotasyon (ER) testleri uygulanmış, ayrıca dokuz fonksiyonel performans testi (FPT) gerçekleştirilmiştir.Tüm açısal hızlarda, dominant (DS) ve non-dominant (NDS) taraflarda EX ve FLX fazlarındaki izokinetik diz kuvvetleri arasında anlamlı fark bulunmamıştır. Omuz izokinetik kuvvetinde IR ve ER ölçümlerinde DS lehine anlamlı farklar bulunurken, tek bacakla ileri sıçrama (SH) ve medial rotasyon sıçrama (MRH) testlerinde NDS lehine anlamlı fark saptanmıştır. Alt ekstremite fonksiyonel performans testleri ile izokinetik diz kuvveti arasında anlamlı bir korelasyon bulunmamıştır. Buna karşılık, bazı açısal hızlarda izokinetik omuz ve diz kuvvetleri arasında orta düzeyde pozitif korelasyon tespit edilmiştir. Sonuç olarak, genel vücut stabilitesinin geliştirilmesinin hem üst hem de alt ekstremite performansını artırabileceği görülmektedir. Ayrıca katılımcıların asimetrik kuvvet oranlarının güvenli sınırlar içinde olması, normal koşullar altında yaralanma riskinin düşük olduğunu göstermektedir.

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Cite This Article

Akgün, S., Kabadayı, M., Yılmaz, A. K. (2026). Linking Isokinetic Strength to Functional Performance: A Correlational Analysis in Elite Male Handball Players. Herkes için Spor ve Rekreasyon Dergisi, Volume: 8 Issue: 2. https://doi.org/10.56639/jsar.1943577

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