Maksimal Aerobik Egzersiz Sonrası Laktat Seviyelerinde Cinsiyet Farklılıkları

Öz

Bu çalışmanın amacı; bitkinliğe varan ve kademeli olarak artan şiddetteki egzersiz sonrasında kanda oluşan laktat düzeylerinin cinsiyete göre değişimini incelemektir. Çalışmaya gönüllü olan ve araştırmaya dâhil edilme kriterlerine göre (18-20 yaş aralığında, benzer antrenman geçmişine, normal vücut kütle indeksi değerlerine (18.5-24.9 kg/m²) ve egzersiz öncesi normal laktat düzeyine sahip olan (<2 mmol)); 70 erkek (yaş:19.15±0.06 yıl; boy: 177.64±6.62 cm ve ağırlık: 67.99±6.52 kg) ve 30 kadın (yaş: 18.98±0.11 yıl; boy: 168.51±6.50 cm ve ağırlık: 58.16±7.34 kg) katılmıştır. Maksimal aerobik gücü belirlemek ve kademeli olarak artan şiddette egzersiz uygulamak üzere 20 m mekik testi uygulanmıştır. Kan laktat konsantrasyonları aerobik performans testinden önce ve hemen sonrasında kulak memesinden alınmıştır. Erkeklerin 20 m mekik testi değerlerine göre hesaplanan aerobik güçleri beklenildiği şekilde kadınlara göre daha yüksek olarak tespit edilmiştir (53.44±2.29 ml.kg^-1.dk^-1 karşın 43.35±4.95 ml.kg^-1.dk^-1, p<0.001). Maksimal oksijen tüketimi değerleri erkeklerde daha yüksek bulunmasına karşın, maksimal aerobik performanstan sonraki laktat seviyelerinin kadın ve erkekler arasında benzer olduğu görülmüştür (9.90±1.95 mmol/l karşın 9.46±1.69 mmol/l, p=0.28). Araştırmadan elde edilen sonuçlar göstermektedir ki, erkeklerin aerobik kapasitelerinin ve egzersiz performanslarının kadınlara göre yüksek olmasıyla birlikte, kanda biriken laktat düzeyleri benzerlik göstermektedir. Kadın ve erkeklerin maksimal egzersizden sonraki laktat düzeyleri arasında anlamlı farklılık tespit edilememiştir.

Anahtar Kelimeler

• Aerobik performans,Maksimal oksijen tüketimi,Laktat,Cinsiyet

Gender Differences in Maximal Aerobic Performance and Lactate Levels

Öz

The aim of this study was to examine the differences of blood lactate levels in response to incremental exhausting exercise according to gender. 70 men (mean ± SD: age:19.15±0.06 years; height:177.64±6.62 cm and weight: 67.99±6.52 kg) and 30 women (age: 18.98 ± 0.11 years; height:168.51±6.50 cm and weight: 58.16±7.34 kg) aged 18-20 who had similar training history, normal body mass index values (18.5-24.9 kg/m²) and normal lactate level in pre-exercise (<2 mmol) were included in this study.  A 20 m shuttle test was used to determine maximal aerobic power. Blood lactate concentrations were taken from the earlobe before and immediately after the aerobic performance test. The aerobic power values of males were higher than females as expected. (53.44±2.29 ml.kg^-1.dk^-1 versus 43.35±4.95 ml.kg^-1.dk^-1, p<0.001). Although maximal oxygen consumption values were found higher in males, it was seemed that the lactate levels were similar between groups after maximal aerobic performance (9.90±1.95 mmol/l vs 9.46±1.69 mmol/l, p=0.28). Our results indicate that, even if aerobic capacity and exercise performance of males was higher than females, they have similar blood lactate levels. There was no significant difference between peak lactate levels of males and females. 

Anahtar Kelimeler

• Aerobic performance,Maximal Oxygen Consumption,Lactate,Gender

Kaynakça

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