EXERCISE-INDUCED HYPOXEMIA IN AEROBIC AND ANAEROBIC TRAINED YOUNG FEMALE ATHLETES

Abstract

The purpose of this study was to examine and compare the occurrence of exercise-induced arterial hypoxemia (EIAH) in aerobic and anaerobic trained young female athletes during a maximal exercise test. International level young female skiers including eight cross-country skiers (17±1.4 years) and seven alpine skiers (16.1±1.2 years) took part in the study. Maximal oxygen uptake (VO_2max: ml/kg/min) was determined using an incremental treadmill exercise test. Oxyhemoglobin saturation (SaO₂%) was continuously measured using a Pulse oximetry at rest and during the test. EIAH was assumed to have developed when SaO₂ decreased by at least 4% (ΔSaO₂≤ −4%) from the baseline values. VO_2max, maximal minute ventilation (L/min), maximal running speed, test duration and maximal heart rate values were higher in the cross-country skiers than in the alpine skiers (p< 0.05). All the athletes in both groups exhibited EIAH. SaO₂ was significantly decreased from 97.7±1.3% at rest to 87±3.4% at exhaustion in alpine skiers and from 98.1±0.3% at rest to 88±2.8% at exhaustion in cross-country skiers (p< 0.01). It has been found that there is no statistically significant difference between the resting and lowest SaO₂% values of the two groups (p> 0.05). It was determined that arterial hypoxemia occurred during exercise in anaerobic and aerobic trained athletes. Well-trained young female athletes who have different aerobic fitness levels may exhibit similar EIAH during the incremental maximal exercise.

Keywords

• Desaturation,oxyhemoglobin saturation,pulse oximetry,cross-country skiers,alpine skiers

AEROBİK VE ANAEROBİK ANTRENMANLI GENÇ KADIN SPORCULARDA EGZERSİZLE OLUŞAN HİPOKSEMİ

Abstract

Bu çalışma ile, aerobik ve anaerobik antrenmanlar yapan genç kadın sporcularda maksimal egzersiz sırasında egzersizle oluşan arteriyel hipoksemi (EOAH) düzeylerini tespit amaçlandı. Araştırmaya, uluslararası düzeyde yarışmalara katılan sekiz genç kadın kros kayakçısı (17±1.4 yaş) ve yedi genç kadın alp kayakçısı (16.1±1.2 yaş) katıldı. Maksimal oksijen alımı (VO_2max: ml/kg/dak) koşu bandında şiddeti giderek artan egzersiz protokolü uygulanarak tespit edilmiştir. Oksijen saturasyonu (%SaO₂) istirahatte ve test süresince sürekli olarak Pulse oksimetre kullanılarak ölçülmüştür. EOAH, SaO₂’nin istirahat düzeyinden en az % 4 (ΔSaO2≤–%4) azalması şeklinde tanımlanmıştır. Kros kayakçılarının VO_2max, maksimal dakika ventilasyonu (L/dak), maksimal koşu hızı, test süresi ve maksimal kalp atım hızı değerleri alp kayakçılarına göre yüksek düzeyde anlamlı bulundu (p< 0.05). Her iki gruptaki tüm sporcularda EOAH görüldü. SaO₂ değerlerinin Alp kayakçılarında % 97.7±1.3 dinlenim düzeyinden % 87±3.4’e düştüğü, kros kayakçıların ise % 98.1±0.3 dinlenim düzeyinden % 88±2.8’e düştüğü tespit edildi (p< 0.01). İki grubun dinlenim ve en düşük % SaO₂ değerleri arasında anlamlı fark olmadığı tespit edildi (p> 0.05). Anaerobik ve aerobik antrenmanlar yapan sporcularda egzersiz sırasında arteriyel hipoksemi ortaya çıktığı tespit edildi. Bu çalışmanın sonuçları farklı aerobik uygunluk düzeylerine sahip iyi antrenmanlı genç kadın sporcuların, maksimal egzersiz sırasında benzer EOAH sergileyebileceğini göstermiştir.

Keywords

• pulse oksimetre,kros kayakçıları,Desatürasyon,oksihemoglobin saturasyonu,alp kayakçıları

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