Turkiye Klinikleri Journal of Sports Sciences

.: ORIGINAL RESEARCH
The Relationships Between Lactate Thresholds and Recovery Capacity with Yo-Yo Tests in Soccer Players
Futbolcularda Yo-Yo Testleri ile Laktat Eşikleri ve Toparlanma Kapasitesi Arasındaki İlişkiler
Nermin ÖZAK ÖZKOLa, Faruk TURGAYb, S. Rana VAROLb, Mehmet Zeki ÖZKOLb, Faik VURALb, Tolga AKŞİTb
aEge University, Health Sciences Institute,
bEge University School of Physical Education and Sports, İzmir
Turkiye Klinikleri J Sports Sci. 2012;4(2):55-63
Article Language: EN
Full Text
ABSTRACT
 Objective: The aim of the present study was to investigate the relations between the Yo-yo intermittent endurance and recovery performance tests with aerobic and anaerobic threshold speed, lactate and heart rate recovery speed, and whether these tests could be used as an alternative test to describe the lactate thresholds in professional soccer players. Material and Methods: 17 male soccer players (aged; 21.11±2.08 year, height; 176.76±6.29 cm, body weight; 72.17±6.72 kg, BMI; 23.09±1.56 kg/m2) of a third professional soccer league team participated in this study. The thresholds and recovery tests, included an incremental intermittent running stages to the voluntary fatigue and 15 minutes passive recovery afterwards. During this test, heart rate and blood lactate values obtained from fingertip were determined after each running stage and recovery period. By these measurements aerobic and anaerobic threshold running speeds (at 2 and 4 mM blood lactate concentration) were determined. After the end of maximal effort, blood lactate concentration, lactate recovery speed and heart rate recovery speeds were calculated. After above mentioned test, each of the Yo-yo intermittent endurance and recovery tests in level 2 were performed. The significance level was set at p<0.05. Results: High level correlation was found between the Yo-yo intermittent endurance and recovery performances (r=0.751, p=0.001). Significant relationships was found between the Yo-yo recovery performance with aerobic threshold speed (r=0.534, p=0.027), and anaerobic threshold speed (r=0.550, p=0.021). There were also relationships between the both threshold speeds and the Yo-yo intermittent endurance performance, but it was not significant. There were no significant relations between lactate threshold speeds with heart rate recovery and lactate recovery speeds. Conclusion: These results suggest that, the Yo-yo intermittent recovery test (level 2) can be used as an alternative to lactate threshold tests in professional soccer players.

Keywords: Yo-yo intermittent endurance test; yo-yo intermittent recovery test; aerobic threshold; anaerobic threshold; lactate clearance speed; heart rate recovery speed
ÖZET
 Amaç: Bu çalışmada aerobik ve anaerobik eşik hızı, kan laktat toparlanma hızı, nabız toparlanma hızı ile Yo-yo aralıklı endurans ve toparlanma performans testleri arasındaki ilişkilerin ve bu testlerin futbolcularda laktat eşiklerinin belirlenmesinde alternatif testler olarak kullanılabilirliğinin araştırılması amaçlanmıştır. Gereç ve Yöntemler: Çalışmaya 3. profesyonel lig takımlarına mensup 17 erkek futbolcu (yaş; 21,11±2,08 yıl, boy; 176,76±6,29 cm, vücut ağırlığı; 72,17±6,72 kg, VKİ; 23,09±1,56 kg/m2) katılmıştır. Gönüllüler istemli yorgunluğa kadar devam eden aralıklı koşu ve sonrasında 15 dk süren pasif toparlanmanın olduğu egzersiz testini gerçekleştirdiler. Test esnasında her kademe sonunda ve toparlanma periyodunda; kalp atım hızı ve laktat ölçümü için parmak ucundan alınan kanlardan, aerobik ve anaerobik eşik (2 ve 4 mM kan laktat konsantrasyonuna karşılık gelen) hızları bulundu. Maksimal eforun bitiminden sonra kan laktat konsantrasyonu, laktat toparlanma hızı ve kalp atımı toparlanma hızı hesaplandı. Bu testlerden sonra 2. düzey Yo-yo aralıklı endurans ve toparlanma testleri gerçekleştirildi, anlamlılık için p<0,05 değeri temel alındı. Bulgular: Yo-yo aralıklı dayanıklılık ve toparlanma testi arasında yüksek düzeyde bir korelasyon bulundu (r=0,751, p=0,001). Yo-yo aralıklı toparlanma performansı ile aerobik eşik hızı (r=0,534, p=0,027) ve anaerobik eşik hızı arasında anlamlı ilişkiler bulundu (r=0,550, p=0,021). Yo-yo aralıklı endurans testi ile aerobik ve anaerobik eşik hızı arasında pozitif korelasyonlar vardı ancak anlamlı değildi. Laktat eşik hızları ile nabız toparlanma hızı ve laktat toparlanma hızı arasında anlamlı bir ilişki bulunmadı. Sonuç: Çalışmanın sonuçlarına göre Yo-yo aralıklı toparlanma testi (2. seviye) profesyonel futbolcularda laktat eşik testlerine alternatif test olarak kullanılabilir.

Anahtar Kelimeler: Yo-yo aralıklı endurans testi; yo-yo aralıklı toparlanma testi; aerobik eşik; anaerobik eşik; laktat eliminasyon hızı; nabız toparlanma hızı.

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