YAĞMUR AKKOYUNLU, Ömer ŞENEL, HÜSEYİN EROĞLU

Farklı Pozisyonlarda Uygulanan Squat Egzersizlerinin Diz Fleksiyon ve Ekstensiyon Kuvvet Gelişimine Etkilerinin İncelenmesi

Bu çalışmanın amacı 8 haftalık farklı pozisyonlarda uygulanan squat antrenmanlarının diz fleksiyon ve ekstansiyon kuvvet gelişimine etkilerini araştırmaktır. Bu çalışmaya 33 sağlıklı erkek denek gönüllü olarak katıldı. Denekler tesadüfi yöntemle tam squat grubu (TSG, n=11), yarım squat grubu (YSG, n=11), ve kontrol grubu (KG,n=11) olarak üç gruba ayrıldı. Deney grubundaki (TSG ve YSG) deneklere haftada üç gün, toplam sekiz hafta süreli, 1 Maksimum tekrarlarının % 60’ı şiddetinde tam ve yarım squat egzersizleri yaptırıldı. Çalışma ağırlıkları 4. haftadan sonra yeniden ayarlandı. Deneklerin yaş, boy ve vücut ağırlığı ortalamaları sırasıyla, Tam squat grubunda 21,45 ± 1,57 yıl, 179,36 ± 5,18 cm , 70,90 ± 6,68 kg., Yarım squat grubunda 21,18 ± 1,25 yıl, 176,90 ± 5,41 cm., 70,04 ± 7,36 kg., Kontrol grubunda ise 21,90 ± 0,70 yıl, 174,45 ± 7,35cm., 72,36 ± 6,29 kg. olarak tespit edilmiştir. Elde edilen verilerin analiz ve değerlendirilmesi SPSS 10.0 istatistik paket programıyla Tek Yönlü Varyans Analizi ve Tukey testleri ile yapıldı. Anlamlılık düzeyi olarak 0,05 ve 0,01 kabul edilmiştir.

Analize of Afreid of Squat Exercises at Different Position on Knee Flexion and Extension Strength Development

The purpose of this study is to assess effects of squat exercises in different positions (half and full squat) on knee flexion and extension strength development. 33 Healthy male subjects were voluntarily participated in to this study. Subjects were divided in to three groups such as full Squat group (FSG,n=11),half squat group (HSG,n=11) and control group (CG,n =11).Subjects in FSG and HSG trained total 8 weeks, three times in a week with 60% of their 1RM . Working weights of subjects were adjusted according to their strenght development after 4 weeks.Control group had no exercise regime.Age ,height and weight of subjects participated in to this study 21,45 ± 1,57 years, 179,36 ± 5,18 cm , 70,90 ± 6,68 kg. in FSG, 21,18 ± 1,25 years, 176,90 ± 5,41 cm., 70,04 ± 7,36 kg. in HSG and 21,90 ± 0,70 years, 174,45 ± 7,35cm., 72,36 ± 6,29 kg. in CG respectively. Statistical analysis were done by using one-way ANOVA and Tukey in SPSS 10,0 Package Program. 0,01 and 0,05 Were taken as meaningfull level. As a result of this study it could be said that half squat exercises has more effects than full squat exercises to improve the strenght of leg flexors and extensors.

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1. Nagura, T., Dyrby, C.O., Alexander, E.J., Adriacchi, T.P.; Mechanichal Loads at the Knee Joint During Deep Flexsion, J. Orthp. Res.Jul. 20(49), 881-886, (2002).
2. Açıkada, C.; Kuvvetin Mekanik Temelleri, Antrenman Bilgisi Sempozyumu, Hacettepe Üniversitesi Spor Bilimleri ve Teknolojisi Yüksek Okulu, Yayın No: 4, Sayfa:89-103, 24-25 Mayıs, (1991).
3. Escamilla, R. F.; Knee biomechanics of the dynamic squat exercise, Medicine & Science in Sports & Exercise, Vol.33, No.1, 127- 141, (2001).
4. Chandler, J.T., Stone, M.H.; The Squat Exercise in Athletic Conditioning: A Reviwe on the Literatur. National Strength Condit. Assoc.J. 13(5): 51-60, (1991).
5. Klein, K.K.; The Deep Squat Exercise us utilized in Weight Training for Athletes and İts Effects on the Ligaments of the Knee. JAPMR, 15(1): 6-11, (1961).
6. Kaufman, K.R.; Dynamic Joint in Forces During Knee İsokinetic Exercise. Am J Sport Med. 20: 2: 162-168, (1992).
7. Kannus, P., Beynon, B.; Peak Torgue Occurrence in the Range of Motion During Isokinetic Extensiyon and Flexsiyon of the Knee, İnt. J. Sports Med., Vol. 14, No.8, pp 422-426, (1993).
8. Eriksson, E., Haagmark, T., Hiesling, K.H., Karlsson, J.; Effect of Electrical Stimulation on Human Sketal Muscle. İnt. J Sports Med.: 18-22, (1981).
9. Romero, J.A., Sanfort, T.L., Schroeder, R.V., Fahey, T.D.; The Effect of Electrical Stimulation Normal Quadriceps on Strenth And Girth. Med.Sci Sports Exerc, Vol.14, No.3, pp.194-197, (1982).
10. Selkowitz, D.M.; High Frequency Electrical Stimulation İn Muscle Strenghtening. The American J of Sports Med. Vol.17, No.1, pp.103-111, (1985).
11. Selkowitz, D.M.; İmprovement İn Isokinetic Strenght of The Quadriceps Femoris Muscle After Training With Electro- Stimulation. Physical Theraphy, 65: 186-196, (1985).
12. Ewing, J.L., Wolf, D., Rogers, M.A., Amundson, M.L., Stull, G.A.; Effect of Velocity of Kinematic Training on Strength, Power And Quadriceps Muscle Fibre Characteristics, Eur. J of Appl Physiol 61: 162-169, (1990).
13. Rochangar, P., Morvan, R., Jan, J., Dasonville, J., Beillot, J.; İsokinetic İnvertigation of Knee Extensors And Flexors in Young French Soccer Players, Int J of Sports Med. Vol: 9, pp. 448-450, (1983).
14. Yates, J.W.; Speed Spesific Eccentric Training And Torque Velocity Curve, Med Sci Sports Exerc, 22: s 9 (53), (1990).
15. Farrar, M., Thorland, W.; Relationship Bettween İsokinetic Strength And Sprint Times in Collage-age men. J. Sports Med.24:358- 72. (1987).
16. Lakomy, H.K.A.; Ergometer For Measuring The Power Generated During Sprinting, The J of Physiol, pp. 435:33, (1984).
17. Knuttgen, H.G.; Force, Work, Power and Exercise, Med Sci Sports Exerc, Vol. 10, No.3, pp. 227-229, (1978).
18. Stafford, M.G., Grana, W.A.; Hamstring/ Quadriceps Ratios in Collage Football Players:A High Velocity Evalation. The American J. Sport. Med. Vol.21, No.3, pp.209-211, (1984).
19. Alexander, MJ L.; Peak Torque Values for Antagonist Muscle Groups and Concentric and Eccentric Contraction Types for Elite Sprinters. Arch Phys Rehabil 71:334-339, (1990).
20. Fox, E.L., Bowers, R.W., Foss, L.M.; The Physiological Basis of Physical Education and Athletics, Saunders Collage Publishing, pp.62-82, (1988).