Artan yüke karşı yapılan egzersiz testi sırasında kardiyopulmoner ve metabolik cevapların aerobik ve anaerobik egzersiz bölgelerinde karşılaştırılmalı olarak belirlenmesi

Amaç: Bu çalışmanın amacı; artan yüke karşı yapılan egzersiz testi sırasında aerobik ve anaerobik egzersiz bölgelerindeki solunum, kalp ve metabolik parametrelerin karşılaştırılmalı olarak araştırılmasıdır. Gereç ve Yöntem: Çalışmaya toplam 24 sağlıklı erkek (yaş: 19.7 ± 1.87 yıl) denek katıldı. Denekler iş gücü 15 W/dk olarak artırılan egzersiz testini yoruluncaya kadar devam ettiler. Metabolik asidin artmaya başladığı noktayı tanımlayan anaerobik eşik, aerobik V-slope metodu ile hesaplandı ve anaerobik egzersiz bölgelerinin ayırımında kullanıldı. Deneklerin egzersiz testleri sırasında akciğer gaz değişim ve metabolik parametreleri gaz ölçüm cihazı kullanılarak solunumdan solunuma hesaplandı. Bulgular: Maksimal egzersizde ve AE’de ki iş gücü ile O2 alım değerleri 233±30 W ve 156±25 W ile 2.96±0.28 L/dk ve 2.02±0.20 L/dk olarak bulundu. Aerobik ve anaerobik bölgelerdeki ortalama O2 alım değerleri sırasıyla 1.291±0.18 L/dk ve 0.924±0.16 L/dk olarak bulundu (p< 0.001). Buna karşılık CO2 atım değerleri ise AE egzersiz bölgesinde 1.301±0.16 L/dk ve anaerobik egzersiz bölgesinde 1.631±0.31 L/dk olarak bulundu (p< 0.001). Aerobik egzersiz bölgesinde 1 W iş gücü için 270.8±37 ml solunum gerekirken anaerobik egzersiz bölgesinde ise 685.4±180 ml gerekmektedir (p< 0.001). Kalp atım hızı, aerobik egzersiz bölgesinde 1 W iş gücü için 2.61±0.6 atım/W gerekirken anaerobik egzersiz bölgesinde ise 2.24±0.5 atım/W gerekmektedir (p< 0.03). Sonuç: Egzersiz sırasında metabolizmadaki aerobikten anaerobiğe değişim ile aerobik ve anaerobik O2 alım, CO2 atılım, solunum ve kalp atım cevapları arasında anlamlı farklılık gözlendi. Aerobik ve anaerobik egzersiz bölgelerindeki kardiopulmoner ve metabolik cevapların değerlendirilmesi aerobik fitnes seviyesi ile ilgili önemli bilgiler sağlamaktadır.

Objective: The aim of this study was comparatively investigate respiratory, cardiac and metabolic parameters in the aerobic and anaerobic region of the incremental exercise test. Material and Methods: Total of 24 healthy male (age: 19.7±1.87 years) participated to study. The subjects performed an incremental exercise test with a work rate of 15 W/min to exhaustion. The anaerobic threshold (AT) reflects the onset of metabolic acidosis and separate aerobic to anaerobic exercise reagion was estimated from V-slope method. During exercise, the subjects’ pulmonary gas exchange and metabolic parameters were measured breathby-breath using metabolic gas analyser. Results: The work rate and O2 uptake at maximal exercise and at the AT was found to be 233±30 W and 156±25 W, 2.96±0.28 L/min and 2.02±0.20 L/ min, respectively. O2 uptake was found to be 1.291±0.18 L/min in aerobic region and 0.924±0.16 L/min in anaerobic region (p< 0.001). In contrast, CO2 output was 1.301±0.16 L/min in aerobic region and 1.631±0.31 L/min anaerobic region (p

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