Ayşe Kin İŞLER, Burak TURGUT, Can AŞICI, Atakan YILMAZ

Çocuklarda cinsel olgunlaşmanın tekrarlı sprint yeteneğine etkisi

Bu araştırma çocuklarda cinsel olgunlaşmanın tekrarlı sprint yeteneğine etkisinin belirlenmesi amacıyla yapılmıştır. Çalışmaya haftada iki gün basketbol antrenmanına katılan 30 ergenliğe girmiş (ort. yaş: 12.5±1.3yıl) ve 28 ergenliğe girmemiş (ort. yaş: 9.7±1.2yıl) erkek çocuk gönüllü olarak katılmıştır. Katılımcıların cinsel olgunlaşma düzeyi kişisel bilgi formuyla, tekrarlı sprint yeteneği ise 30 saniye dinlenme aralıklarıyla uygulanan 12x20m tekrarlı sprint testi ile belirlenmiştir. Tekrarlı 20m sprint testinde 0-10m, 10-20m ve 0-20m mesafeleri için en iyi sprint zamanı, toplam sprint zamanı ve performans düşüş yüzdesi değerleri belirlenmiştir. Bağımsız örneklerde t-testi sonuçları 0-10m (t=- 2.311;p=.025), 10-20m (t=-2.327; p=.024) ve 0-20m (t=-2.141; p=.037) en iyi sprint zamanı değerlerinde ergenliğe girmiş katılımcılar lehine istatistiksel yönden anlamlı bir fark olduğunu göstermiştir. Benzer şekilde toplam sprint zamanı değerlerine bakıldığında 0-10m (t=-2.358;p=.022), 10-20m (t=-2.578; p=.013) ve 0-20m (t=-2.505; p=.015) mesafelerinde Zafeiki grup arasında anlamlı fark belirlenmiş ve bu fark ergenliğe girmiş katılımcıların daha iyi toplam sprint zamanı değerlerinden kaynaklanmıştır. Performans düşüş yüzdesi değerlerinde 0-10m, 10-20m ve 0-20m mesafelerinde iki grup arasında anlamlı bir fark belirlenmemiştir (p>.05). Bu sonuçlar tekrarlı sprint yeteneğinin en iyi ve toplam sprint zamanı açısından cinsel olgunlaşmaya göre farklılaştığını, performans düşüş yüzdesinin başka bir deyişle yorgunluğun cinsel olgunlaşmadan etkilenmediğini göstermektedir.

Effect of pubertal status on repeated sprint ability in children

The purpose of this study was to investigate the effect of pubertal status on repeated sprint ability in children. Fifty-nine boys (28 pre-pubertal (mean age: 9.7±1.2 yrs) and 30 post-pubertal (mean age: 12.5±1.3 yrs)) who were involved in basketball twice a week participated in this study voluntarily. Pubertal status of the subjects was determined by a selfreport questionnaire and repeated sprint ability was determined by a 12×20m running repeated ability test with 30s intervals. After the repeated sprint ability tests subjects’ best sprinting time, total sprinting time and the percentage of performance decrement was calculated for 0-10m, 10-20m and 0-20m. Results of the independent samples t-test indicated significant differences in best sprinting time for 0-10m (t=- 2.462, p=.017), 10-20m (t=-2.427, p=.018) and 0-20m (t=-2.270, p=.027) between pre-pubertal and postpubertal boys. In addition significant differences was observed in total sprinting time for 0-10m (t=-2.502, p=.015), 10-20m (t=-2.665, p=.010) and 0-20m (t=- 2.627, p=.011) between pre-pubertal and post-pubertal boys. In contrast no significant differences was obtained in percentage of performance decrement for any distances between the two pubertal groups (p>.05). It is clear from the results that puberty has a profound effect on repeated sprint ability as post-pubertal boys have better best and total sprinting time. However puberty did not produce any differences in performance decrement indicating that pre-pubertal and post-pubertal boys in the present study were not different in rate of fatigue development

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