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Kritik güç ile maksimal oksijen tüketimi ve anaerobik eşik arasındaki ilişkiler

The relationships of the critical power to maximal oxygen utilization and anaerobic threshold

Journal Name:

  • Selçuk Tıp Dergisi

Publication Year:

  • 2003

Key Words:

Keywords (Original Language):

Author NameUniversity of Author
Abstract (2. Language): 
To evaluate the relations among the critical power, maximal oxygen utilization and anaerobic thresh-olds. Method: İn order to determine the maximal oxygen consumption and anaerobic thresholds on 30 sedentary men aged 18-22 years, an incremental maximal exercise test on cycle ergometer was performed. Respiratory gas parameters were recorded by SensorMedics 2900 Metabolic Measurement Cart in every 20, heart rate values were recorded by Polar Sport Tester in every 5 seconds and biood lactate concentrations were determined by Accusport Lactate Analyzer on capillary blood samples from finger point at the end of every two minutes. From the gas exchange parameters and heart rate and lactate values, three separate ventilatory thresholds. heart rate deflection point and the onset of biood lactate accumulation were caiculated. Three different loads were applied for the critical povver test at different days and linear vvork-time relationship method was used to estimate the crit¬ical power. Each participant performed an exercise test at his critical povver until exhaustion and then the duration of exercise and work vvere determined. Results: İt was found that the critical povver was correlated with V02max and some anaerobic thresholds. The critical povver was lovver than the load at vvhich V02max vvas occurred, but higher than the loads at vvhich anaerobic thresholds vvere occurred. The duration of exercise and vvork at the crit¬ical povver vvere not correlated with V02max and anaerobic thresholds. Conclusion: Although the cn'tical povver is related to the maximal aerobic povver and some anaerobic thresholds, vve consider that duration of exercise and vvork at the critical povver can not be used as criteria İn the determination of endurance since exercise time and vvork at the critical povver are not correlated to these endurance parameters.
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Abstract (Original Language): 
Amaç: Kritik güç, maksimal oksijen tüketimi ve anaerobik eşikler arasındaki ilişkileri incelemek. Yöntem: 18-22 yaşlarındaki 30 sedanter erkeğe bisiklet ergometresinde yoğunluğu giderek artan maksimal egzersiz yaptırıldı. Solunum gaz parametreleri SensorMedics 2900 Metabolik Ölçüm Kartı kullanılarak 20, kalp hızı değerleri ise Polar Sport Tester aracılığıyla 5 saniyede bir kaydedildi. İki dakikada bir el parmak ucundan kapiller kan alınarak Accusport Laktat Analizörü ile laktat konsantrasyonları belirlendi. Gaz değişim parametreleri, kalp hızı ve laktat değerlerinden 3 ayrı ventilatuvar eşik, kalp hızı sapma noktası ve kan laktat birikmesinin başlangıcı hesaplandı. Kritik güç testi için farklı günlerde üç ayrı yük uygulandı ve lineer iş-zaman İlişkisi kullanılarak kritik güç saptandı. Katılımcılara kritik güç değerlerinde tükenmeye kadar egzersiz yaptırılarak kritik güçteki egzersiz süresi ve İş belir¬lendi. Bulgular: Kritik güç, Vö2max ve bazı anaerobik eşiklerle ilişki bulundu. Kritik güç, V02max'ın oluştuğu yük¬ten düşük, anaerobik eşiklerin oluştukları yüklerden yüksekti. Kritik güçteki egzersiz süresi ve iş ile Vö2max ve anaerobik eşikler arasında ilişki yoktu. Sonuç: Kritik gücü maksimal aerobik güçle ve bazı anaerobik eşiklerle ilişkili bulmamıza rağmen, kritik güçteki egzersiz süresi ve işle bu dayanıklılık parametreleri arasında ilişki bula¬madığımız için kritik güçteki egzersiz süresinin ve işin, dayanıklılığın tayininde ölçü olarak kullanılamayacaklarını düşünüyoruz.
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