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SPRİNTER VE ATLAYICILARIIM HAMSTRING/QUADRICEPS KUWET ORANLARININ DÜZELTİLMESİNDE İZOMETRİK EGZERSİZİN ETKİLERİ

Journal Name:

  • Hacettepe Üniversitesi Spor Bilimleri Dergisi

Publication Year:

  • 1993
Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
The purpose of this study was to evaluate and try to improve the low H/Q ratios of eleven elite male sprinters and jumpers at the preparatory season. Cybex 11-340 isokinetic dynamometer was used for evaluating H/Q ratios at 60-180-300°/sec, and da¬vid's Rehab-Trainer exercise system was used for practising isometric program. Subjects with low H/Q ratios were practised isometrically for 5 weeks (2 sessions per week) while they were continuing their routinge training program. Five subjects with low H/Q ratios in 60°/sec were in the experimental group and five subjects with normal ratios were in the control. Additionally, left leg of one subject with low H/Q peak-torque ratio in 60°/sec was in the experimental group and right leg with normal ratio was in the control. Average H/Q peak-torque ratio of this group increased from 58.4 % to 64.0 % at 60°/sec 5p<0.05). However, at higher velocities no significant effect of this isometric exercise program was observed. Meanwhile, subject in the control group, perorming only their routine training program, hak decreases in their H/Q ratios at 60°/sec. Therefore, it has been concluded that adequate emphasis is not given for hamstring strengthening in sprinters and jumpers, so that H/Q ratios tend to decrease to a limit that may cause an injury.
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Abstract (Original Language): 
Hazırlık periyodu antrenmanlarına devam etmekte olan 11 elit, erkek sprinter ve atlayıcı atletin hamstring/quadriceps peak-torque* (H/Q Pt) ve güç (H/Q ap) oranlarını değerlendirip, bu konudaki dengesizlikleri giderebilmek amacıyla, Cybex 11-340 izo-kinetik dinamometre ile 60-180-300°/sn'lik açısal hızlarda testlemeler yapılmıştır. H/Q pt oranları 60°/sn için düşük olan 5 sporcu deney grubunda, normal sınırlarda olan 5 sporcu ise kontrol grubunda yer almıştır. Bir sporcunun H/Q oranı normalin altında olan sol bacağı deney grubunda yer alırken normal düzeyde olan sağ bacağı ise kontrol grubunda değerlendirilmiştir. Deney grubunda ki sporcular rutin antrenmanlarına devam ederlerken, aynı zamanda David's Rehab-Trainer sisteminde 5 hafta süren, toplam 100 seanstık ek bir izometrik egzersiz programı uygulanmıştır. Deney grubunun H/O pt oranları 60°sn'de, % 58.4'ten % 64.0'e yükselmiştir (p<0.05). Fakat, bu programın yüksek açısal hızlarda ne kuvvet ne de güç değerlerine anlamlı bir etkisi görülmemiştir. Bu arada, sadece rutin antrenmanlarına devam etmekte olan kontrol grubunun H/Q pt oranları 60°/sn'de düşmüştür. Bundan dolayı, sprinter ve atlayıcıların antrenmanlarında hamstring kuvveti gelişimine gerekli önemin verilmverilmediği, bunun sonucnuda da H/Q oranlarının gittikçe düşerek bir yaralanma faktörü haline gelebileceği sonucuna varılmıştır.
FULL TEXT (PDF): 
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  • Turkish

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