Kayak Branşı Sporcularında Bacak Sertliği ve Reaktif Kuvvet İndeksi Farklılıklarının İncelenmesi

Öz

Bu araştırma, elit düzeydeki kayakçılarda, bacak sertliği ve reaktif kuvvet indeksi (RKİ) arasındaki farklılıklarının incelenmesi amacıyla yapıldı. Araştırmaya yaş ortalaması (18,55±2,86 yıl) boy ortalamaları (172,10±6,05 cm), vücut ağırlığı ortalamaları (65,73±10,79) olmak üzere 5 farklı branşta toplam 40 erkek kayak sporcusu katıldı. Bacak sertliği ölçümü için gerekli veriler Opto Jump protokolleri üzerinden alındı. Bacak sertliği Dalleau G, ve arkadaşlarının oluşturduğu bir eşitlik ile hesaplandı. Reaktif kuvvet indeksi 40 cm standart derinlik sıçrama üzerinden alındı. Değişkenler arasındaki ilişkilerin analizinde pearson momentler çarpımı korelasyon katsayısı uygulandı. Reaktif kuvvet ile bacak sertliği değişkenlerine incelendiğinde; alp disiplini branşında (r=0,801) yüksek, snowboard branşında (r=0,636) orta, biathlon branşında negatif yönde (r=-0,402) zayıf, kayaklı koşu branşında negatif yönde (r=-0,306) düşük, kayakla atlama branşında pozitif yönde (r=0,261) zayıf ilişki tespit edildi (p= 0,001). Diğer branşlar arasında bacak sertliği ve reaktif kuvvet indeksi değişkenleri arasında anlamlı ilişki görülmemiştir. Bu araştırmanın bulguları ile biathlon, kayakla atlama ve kayaklı koşu branşı sporcularında temel güç antrenmanlarını artırarak yüksek kas katılığını üretebileceği ve yüksek katılığı sürdürmede ise patlayıcı egzersizlerin önemli bir faktör olduğu düşünülmektedir. Bunlarla birlikte kas katılığı ile hız, ani yön değiştirme ve reaktif hız performansları arasında ilişki olduğu düşünülmektedir.

Anahtar Kelimeler

• Bacak Sertliği
• Kayak
• Pliometrik
• Reaktif Kuvvet İndeksi

Examination of Differences in Leg Stiffness and Reactive Strength Index an Ski Athletes

Öz

This research was conducted to examine the differences between leg stiffness and reactive strength index (RSI) in elite level skiers. A total of 40 male ski athletes (in 5 different branches) with an average age of (18.55±2.86 years), average height of (172.10±6.05 cm) and average body weight of (65.73±10.79) participated in the research. The data required for leg stiffness measurement were obtained via Opto Jump protocols. Leg stiffness was calculated with an equation created by Dalleau G, et al. Reactive strength index was taken from a 40 cm standard depth jump. Pearson product moment correlation coefficient was applied to analyze the relation ships between variables. When the variables of reactive strength and leg stiffness are examined; high relationship in alpine skiing (r=0.801), medium relationship in snowboarding (r=0.636), weak negative relationship (r=-0.402) in biathlon, low negative relationship in cross-country skiing (r=-0.306), weak positive relationship in ski jumping (r= 0.261) were found (p = 0.001). No significant relationship was observed between leg stiffness and reactive strength index variables among other branches. With the findings of this research, it is thought that biathlon, ski jumping and cross-country ski athletes can produce high muscle stiffness by increasing basic strength training, and explosive exercises are an important factor in maintaining high stiffness. In addition, it is thought that there is a relationship between muscle stiffness and speed, sudden change of direction and reactive speed performances.

Anahtar Kelimeler

• Leg Stiffness
• Skiing
• Plyometrics
• Reactive Strength Index

Kaynakça

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