Turkiye Klinikleri Journal of Sports Sciences

.: ORIGINAL RESEARCH
The Relationship Between Eccentric Hamstring Muscle Strength and Reaction Time in Elite Volleyball Players: Cross-Sectional Study
Elit Voleybolcularda Eksantrik Hamstring Kas Kuvveti ile Reaksiyon Süresi Arasındaki İlişki: Kesitsel Çalışma
Emre ALTUNDAĞa , Çağlar SOYLUb , Mehmet Görkem İŞGÜZARc
aDepartment of Physical Education and Sport Teacher, Kütahya Dumlupınar University Faculty of Sports Sciences, Kütahya, Türkiye
bDepartment of Orthopedic Rehabilitation, University of Health Sciences Gülhane Faculty of Physiotherapy and Rehabilitation, Ankara, Türkiye
cDepartment of Movement and Training Sciences, Gazi University Institute of Health Sciences, Ankara, Türkiye
Turkiye Klinikleri J Sports Sci. 2024;16(1):7-13
doi: 10.5336/sportsci.2023-97965
Article Language: EN
Full Text
ABSTRACT
 Objective: The aim of this study was to investigate whether or not eccentric hamstring muscle strength has an effect on reaction time in elite volleyball players. Material and Methods: The study included 33 male volleyball players, aged 16-20 years, who met the study inclusion criteria. The eccentric hamstring strength was measured during Nordic hamstring exercises with an iVMES H-BORD®. The reaction time of the volleyball players was measured with the Light Trainer Flash Light Exercise System TM. Results: A strong level, negative, significant correlation was determined between the maximum eccentric hamstring muscle strength values of the dominant and non-dominant side of the study participants and the mean reaction time (r=-0.69, p<0.001; r=-0.78, p<0.001, respectively) and the best reaction time values (r=-0.70; p<0.001, r=-0.75; p<0.001, respectively). A strong level, negative, significant correlation was determined between the mean eccentric hamstring muscle strength values of the dominant and nondominant side and the mean reaction time (r=-0.69; p<0.001, r=-0.71; p<0.001, respectively) and the best reaction time values (r=-0.71; p<0.001, r=-0.68; p<0.001, respectively). At the same time, it was determined that there was no significant correlation between maximum and mean eccentric muscle strength difference and mean reaction time and best reaction time values (p>0.05). Conclusion: The results of this study showed a significant correlation between eccentric hamstring muscle strength and reaction time parameters in young, male volleyball players. Trainers and sports scientists should take this into consideration in training programs to improve the performance of volleyball players.

Keywords: Volleyball; eccentric muscle strength; hamstring; reaction time
ÖZET
 Amaç: Bu çalışmanın amacı, elit voleybol oyuncularında eksantrik hamstring kuvvetinin reaksiyon zamanı üzerine etkili olup olmadığını araştırmaktır. Gereç ve Yöntemler: Çalışmaya dahil edilme kriterlerini karşılayan 16-20 yaş arası 33 erkek voleybol oyuncusu dahil edilmiştir. Eksantrik hamstring kuvveti Nordic hamstring egzersizi sırasında iVMES H-BORD® cihazı ile ölçülmüştür. Sporcuların reaksiyon zamanı Light Trainer Flash Light Exercise System TM reaksiyon zamanı cihazı ile yapılmıştır. Bulgular: Çalışmaya katılan bireylerin dominant ve nondominant taraf maksimum eksantrik hamstring kas kuvvetleri ile ortalama alt ekstremite reaksiyon zamanı (sırasıyla r=-0,69, p<0,001; r=-0,78, p<0,001) ve en iyi reaksiyon zamanı (sırasıyla r=-0,70; p<0,001, r=-0,75; p<0,001) değerleri arasında kuvvetli, ters yönde, anlamlı ilişki olduğu saptanmıştır. Benzer şekilde dominant ve nondominant taraf ortalama eksantrik hamstring kas kuvvetleri ile ortalama alt ekstremite reaksiyon zamanı (sırasıyla r=-0,69; p<0,001, r=-0,71; p<0,001) ve en iyi reaksiyon zamanı (sırasıyla r=-0,71; p<0,001, r=-0,68; p<0,001) değerleri arasında anlamlı, kuvvetli, ters yönde ilişki olduğu bulunmuştur. Aynı zamanda maksimum ve ortalama eksantrik kas kuvvet farklılığı ile ortalama alt ekstremite reaksiyon zamanı ve en iyi reaksiyon zamanı değerleri arasında ise anlamlı bir ilişki olmadığı tespit edilmiştir (p>0,05). Sonuç: Sonuç olarak, voleybolcularda eksantrik hamstring kuvveti ile reaksiyon zamanı parametreleri arasında anlamlı ilişki olduğu bulunmuştur. Voleybolcuların performanslarını geliştirmek için çalışan atletik performans antrenörleri ve spor bilimciler bu durumu göz önünde bulundurmalıdırlar.

Anahtar Kelimeler: Voleybol; eksantrik kas kuvveti; hamstring; reaksiyon zamanı
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