FARKLI DİZ AÇILARI VE SÜRELERDE YAPTIRILAN STATİK GERMENİN, SIÇRAMA PERFORMANSI ÜZERİNE AKUT ETKİSİ

Abstract

Statik germenin, vertikal sıçrama performansına akut etkisinin olumsuz olduğu ile ilgili bilimsel çalışmalar yapıldıktan sonra, antrenörlerin sporcu ısınma protokollerinde statik germe egzersizlerini kullanmadıkları görülmüştür. Bu araştırma, farklı diz açıları ve sürelerde yaptırılan statik germenin, vertikal sıçrama performansı üzerine akut etkisini tespit etmek amacıyla yapılmıştır. Araştırmaya, Çukurova Üniversitesi Spor Kulübü’nde oynayan 19 erkek futbolcu gönüllü olarak katılmıştır. Katılımcıların vertikal sıçramaları, farklı diz açılarında (150⁰-130⁰) ve sürelerde (0sn-15sn-30sn-45sn) uygulanmıştır. Ölçümler, 150⁰ (birinci gün) ve 130⁰  (ikinci gün)diz açısında 4 farklı sürede (0sn-15sn-30sn-45sn) statik germe ve vertikal sıçrama yaptırılmıştır. Her sıçrama sonrası, germe süresi kadar dinlenim verilmiştir. Katılımcıların vertikal sıçramaları Takei marka Jump Meter ile yapılırken, diz açıları baseline marka plastik goniometer (30cm) ile ölçülmüştür. Verilerin analizinde; SPSS 21 paket programı kullanılmıştır. Verilerin normal dağılımlarında; Shapiro-Wilk testine bakılmıştır. Sadece 45sn statik germe değerlerinin normal dağılım göstermediği tespit edilmiştir (p=0,046). Bu nedenle grup içi; nonparametrik testlerden Wilcoxon Testi ile gruplararası karşılaştırmalarda ise; Mann Whitney U Testi kullanılmıştır. Normal dağılım gösteren parametreler için; grupiçi paired t-testi, gruplararası independent t-testi yapılmıştır. Katılımcıların sadece 130⁰ lik diz açısında 45sn statik germe sonunda yaptıkları vertikal sıçramanın 0sn deki sıçramadan daha iyi olduğu tespit edilmiştir (p=0,04). Ancak, aynı diz açısında 15sn statik germenin ise vertikal sıçramayı negatif etkilediği görülmüştür (p=0,05). Diğer ölçümler arasında anlamlı bir farklılık çıkmamıştır (p>0,05). Sonuç olarak; sporcu ısınmalarında statik germenin belirli bir diz açısı ve sürede yapılmasının, vertikal sıçrama performansında olumsuzluk yaratmayabileceği vurgulanabilir.

Keywords

• vertikal sıçrama,farklı diz açıları,süre,statik germe,süre,vertikal sıçrama

THE ACUTE EFFECT OF STATIC STRETCHING AT DIFFERENT KNEE ANGLES AND DURATIONS ON JUMP PERFORMANCE

Abstract

After the scientific studies about the negative effect of static stretching on vertical jumping performance, it was observed that coaches did not use static stretching exercises in athletic warming protocols. This study was conducted to find out the acute effect of static streching performed at different knee angles and durations on vertical jump performance.

19 male football players playing in Cukurova University Sports Club participated in this study voluntarily. Vertical jumps of the participants were applied at two different knee angles (150⁰-130⁰) and durations (0s-15s-30s-45s). Measurements were performed in two days. At 150⁰ (first day) and 130⁰ knee angle (second day), static stretching and vertical stretching were made for 4 different durations (0s-15s-30s-45s). After each jump, rest time equal to stretching time was given. While vertical jump measurements of participants were made with Takei brand jump meter, knee angles measurements of participants were performed with baseline brand plastic goniometer (30cm). Statistical analyses were carried out using SPSS 21 package program. Shapiro-Wilk test was conducted for normality distribution of the data. It was found that only static stretching values of 45 sec did not show normal distribution (p = 0,046). For this reason, Wilcoxon Test and Mann Whitney U Test were used for nonparametric tests. For paramaters which were normally distributed, paired t-test and independent t-test were performed.

Vertical jump after static stretching (45s) was found to be higher than baseline jump (0s) measurements only at 130 degree knee angles of the participants (p=0.04). However, at the same knee angle, 15 seconds of static stretching had a negative effect on the vertical jump (p = 0.05). There was no significant difference between the other measures (p> 0.05). As a result; it can be emphasized that static stretching exercise which is done at a certain angle of knee and duration in warm-up may not create a negative impact on vertical jump performance.

Keywords

• Duration,Knee angles,Static stretching,Vertical jump

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