Dönüşümlü ve Dönüşümsüz Sporlarda Bilateral Asimetrinin İncelenmesi

Öz

Bu çalışma, dönüşümlü (yüzme) ve dönüşümsüz (kick boks) sporlarla uğraşan genç sporcularda bilateral asimetri düzeylerini karşılaştırmayı amaçlamaktadır. Çalışmaya 8–12 yaş aralığında, en az 3 yıldır düzenli antrenman yapan ve haftada ≥3 antrenmana katılan, son 2 yılda en az bir müsabaka deneyimi olan ve son 3 ayda sakatlık yaşamamış 16 yüzücü ve 16 kick boksçu dahil edilmiştir. Üst ekstremite asimetrisi el kavrama kuvveti (EKK) testi ile, alt ekstremite asimetrisi tek ayakla countermovement jump (CMJ) sırasında My Jump 2 ile hesaplanan kontakt zaman asimetri yüzdesi ile değerlendirilmiştir. EKK için en yüksek sağ/sol oranı üzerinden “%10 kuralı” ile sınıflama yapılmış; CMJ ve EKK çıktıları sırasıyla bağımsız örneklem t-testi ve Mann–Whitney U testi ile analiz edilmiştir (p0.05; d=-0.29] ve EKK asimetrisi [kick boks: 2.3 ± 2.0; yüzme: 1.3 ± 1.0; p>0.05; d=0.20] açısından anlamlı fark bulunmamıştır. CMJ performansı da benzerlik göstermiştir (p=0.43). Bulgular, branşa özgü hareket simetrisinin bu yaş grubunda asimetriyi belirlemede sınırlı etkisi olabileceğini ve bireysel nöromüsküler farklılıkların daha belirleyici rol oynayabileceğini düşündürmektedir. Daha geniş örneklemler ve boylamsal izlem çalışmaları, asimetri–performans–sakatlık ilişkisini açıklığa kavuşturabilir.

Anahtar Kelimeler

• Bilaterel asimetri
• Kick boks
• Yüzme

Destekleyen Kurum

Bu araştırma için herhangi bir dış finansman alınmamıştır.

Etik Beyan

Etik onay Kastamonu Üniversitesi Girişimsel Olmayan Klinik Araştırmalar Etik Kurulu'ndan alınmıştır.

Teşekkür

Yazarlar herhangi bir kişi veya kuruma teşekkür etmek istememektedir.

An Analysis of Bilateral Asymmetry in Cyclical and Non-Cyclical Sports

Öz

This study aims to compare bilateral asymmetry levels in young athletes engaged in symmetrical (swimming) and asymmetrical (kickboxing) sports. The study included 16 swimmers and 16 kickboxers aged 8–12 years, who had been training regularly for at least 3 years, participated in ≥3 training sessions per week, had at least one competition experience in the last 2 years, and had not sustained any injuries in the previous 3 months. Upper extremity asymmetry was assessed using the handgrip strength (HGS) test, while lower extremity asymmetry was evaluated using the contact time asymmetry percentage calculated with My Jump 2 during single-leg countermovement jump (CMJ). For HGS, classification was made based on the highest right/left ratio using the “10% rule.” CMJ and HGS outcomes were analyzed using independent samples t-test and Mann–Whitney U test, respectively (p<0.05). No significant difference was found in CMJ contact time asymmetry [kickboxing: 4.8 ± 4.0; swimming: 5.8 ± 3.1; p>0.05; d=-0.29] or HGS asymmetry [kickboxing: 2.3 ± 2.0; swimming: 1.3 ± 1.0; p>0.05; d=0.20]. CMJ performance also showed similarity between groups (p=0.43). The findings suggest that sport-specific movement symmetry may have a limited effect on determining asymmetry in this age group, and individual neuromuscular differences may play a more determining role. Larger sample sizes and longitudinal follow-up studies could clarify the asymmetry–performance–injury relationship.

Anahtar Kelimeler

• Bilaterel asymmetry
• Kickboxing
• Swimming

Destekleyen Kurum

Kastamonu University Clinical Research Ethics Committee

Etik Beyan

Documents related to the application file with the decision number 2024-KAEK-132 have been reviewed by considering the rationale, purpose, approach, and methods of the research/study, and were found suitable. It has been decided by the absolute majority of the full membership of the ethics committee present at the meeting that there are no ethical or scientific objections to conducting the research/study at the centers specified in the application file.

Kaynakça

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