摘要：The aim of this study was to compare different indicators of aerobic capacity derived from two graded treadmill exercise test protocols of different duration. Ten female runners completed two graded treadmill tests to exhaustion with increasing speed of : 1) 1 kmh /60 s (ST) and 2) 1 kmh /30 s (KT). Spiroergometric parameters were registered b and averaged to 30 s. The second ventilatory (anaerobic) threshold (P) was determined by the simplified method. The maximum running speed (v : 17,1±1,4 kmh ; v : 19,4 ± 1,2 kmh ) and running speed at the P (v : 12,3 kmh ± 1,5; v : 13,8 ± 1,5 kmh ) differed significantly between protocols (p single stage and overall test duration. Heart rate value (FS) at the maximum intensity was significantly lower in KT (FS : 194,9±6,8 bpm; FS : 190,4±6,0 bpm; p=0,03) which can be attributed to the inertia of cardiovascular dynamics, while FS at P did not differ significantly between protocols (FS : 178,2±8,7 bpm; FS : 175,2±10,9 bpm; p>0,05). Maximal oxygen uptake did not differ between protocols (VO : 52,6±4,9 ml/kg, VO : 53,9±6,2 ml/kg; p>0.05), while at the P, a small but statistically significant difference was found (VO : 45,6±5,2 ml/kg, VO : 47,7±5,2 ml/kg; p=0,03). Correlation analysis revealed high to very high relationships between all test parameters (r = 0.77–0.96, p P and at maximum (r = 0.01-0.52, p>0.05). RQ did not differ between tests at P (RQ : 0.98±0,04, RQ : 0,96±0,08; p>0.05) nor at maximum intensity (RQ : 1.20±0,09, RQ : 1,25±0,11; p>0.05). Lower values in the RQ in relationship to values reported in the literature for male runners may be explained by a relatively higher share of energy for muscle work by oxidation of fats in females compared to males, probably due to the influence of gender specific hormonal status. The results of this study indicate that test characteristics and overall test duration should be considered when comparing results obtained from different graded exercise test protocols.
关键词：running;aerobic capacity;anaerobic threshold;graded exercise test
