Vago P, Mercier J, Ramonatxo M, Prefaut C
Int J Sports Med. 1987 Jun;8(3):190-5. doi: 10.1055/s-2008-1025654.
This study was undertaken to assess whether ventilatory anaerobic threshold (T vent) reflected endurance capacity (EC) in sports medical control. Fifteen subjects performed two cycle ergometer tests. The first was a maximal exercise test, which consisted of increasing the load 20 W/min until exhaustion. During this test, the gas exchange anaerobic threshold was determined and VO2 max was measured. The second was an endurance exercise test, which consisted of asking the subject to work, as long as possible, a load representing 80% of his maximal aerobic power. During this test, we measured endurance time (ET). The statistical analysis showed the lack of relationship between VO2 max and ET and the linear correlations between VO2 T vent ml/min/kg and ET min (r = 0.521, P less than 0.05), VO2 T vent l/min and ET min (r = 0.524, P less than 0.05), and T vent % VO2 max and ET (r = 0.738, P less than 0.01). These results establish that ventilatory anaerobic threshold actually reflects endurance capacity. This relation can be explained referring to the muscle energetic metabolism during exercise. Therefore, T vent should be determined systematically in addition to VO2 max during maximal exercise tests to better evaluate physical fitness.
本研究旨在评估在运动医学检查中，通气无氧阈（T vent）是否能反映耐力能力（EC）。15名受试者进行了两项自行车测力计测试。第一项是最大运动测试，包括以每分钟20瓦的速度增加负荷直至力竭。在该测试过程中，测定气体交换无氧阈并测量最大摄氧量（VO2 max）。第二项是耐力运动测试，要求受试者尽可能长时间地以代表其最大有氧功率80%的负荷进行运动。在该测试过程中，我们测量了耐力时间（ET）。统计分析表明，最大摄氧量与耐力时间之间缺乏相关性，而每公斤体重每分钟的通气无氧阈摄氧量（VO2 T vent ml/min/kg）与耐力时间（分钟）之间呈线性相关（r = 0.521，P < 0.05），每分钟通气无氧阈摄氧量（VO2 T vent l/min）与耐力时间（分钟）之间呈线性相关（r = 0.524，P < 0.05），通气无氧阈占最大摄氧量的百分比（T vent % VO2 max）与耐力时间之间呈线性相关（r = 0.738，P < 0.01）。这些结果表明，通气无氧阈确实能反映耐力能力。这种关系可以通过参考运动过程中的肌肉能量代谢来解释。因此，在最大运动测试中，除了测定最大摄氧量外，还应系统地测定通气无氧阈，以便更好地评估身体素质。
