Bilateral Defisit’in Anaerobik Güç Üretimi Üzerindeki Etkileri: Derleme

Maksimal istemli kas kasılması sırasında, homonymous kasların birbirinden bağımsız olarak (unilateral) aktive edilmesiyle elde edilen gücün toplam miktarı, homonymous kasların eş zamanlı olarak (bilateral) aktive edilmesiyle elde edilen güç miktarından daha fazladır. Bu olay “Bilateral Defisit (BLD)” olarak This phenomenon is known as “Bilateral Deficit” tanımlanmaktadır. BLD’nin nedeni tam olarak açıklanamamasına rağmen harekete katılan yüksek eşikli motor ünite aktivasyonundaki azalma ve transkallozal inhibasyon olduğu varsayılmaktadır. Bu çalışmanın amacı, BLD’nin anaerobik güç üretimi üzerindeki etkilerinin açıklanmasıdır. Literatür incelemesi sırasında; “Unilateral Hareket (UL), Bilateral Hareket (BL), Bilateral Defisit (BLD), İzometrik El Kavrama Kuvveti, Maksimal İstemli Kas Kasılması ve Spinal Kord Refleksleri “ anahtar kelimeleri kullanılarak basılı ve elektronik kaynaklar taranmıştır. Literatürden elde edilen bilgilere göre; belirli bir kassal hareket sırasında bilateral-homonymous (eş zamanlı olarak) kasların aktivasyonuyla üretilen güç miktarı, unilateralnonhomonymous hareketler esnasında üretilen güç miktarından % 7-25 daha azdır. Bilateral el kavrama kuvveti göz önünde bulundurulduğunda ise dominant tarafta gözlenen BLD oranı % 5-14’ tür. Maksimal istemli dinamik ve izometrik kas kasılması BLD’den büyük oranda etkilenmektedir. BLD’nin dikey sıçrama performansı, reaksiyon zamanı ve sprint performansı üzerindeki etkileri konusunda bilgiler oldukça kısıtlı ve çelişkilidir. Bilateral kas kasılması neredeyse bütün antrenman programlarında yer alır ve BLD’nin olumsuz etkileri özel antrenmanlarla değiştirilerek, bilateral fasilitasyona dönüştürülebilir. Bu durum, çift bacakla sıçrama gibi bilateral eş zamanlı kas aktivitesi içeren hareketlerde avantaj sağlayabilir

Anahtar Kelimeler:

Unilateral hareket (UL), Bilateral hareket (BL), Bilateral defisit (BLD), Maksimal istemli kas kasılması (MVC)

BİLATERAL DEFİSİT'İN ANAEROBİK GÜÇ ÜRETİMİ BİLATERAL DEFİSİT'İN ANAEROBİK GÜÇ ÜRETİMİ.

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