Duggan A, Tebbutt S D
Applied Physiology Division, Ministry of Defence, Farnborough, Hampshire, England.
Int J Sports Med. 1990 Apr;11(2):111-5. doi: 10.1055/s-2007-1024773.
Run velocity at the onset of blood lactate accumulation (vOBLA) has been reported to be highly correlated with performance in endurance runs. From capillary blood samples taken during incremental treadmill running, vOBLA and the blood lactate concentration at a run speed of 12 km/h (La12) were determined in a group of 11 men which excluded endurance athletes. The inter-relationships between these variables, 4-km run performance and maximal oxygen uptake (VO2max) were investigated. vOBLA and La12 were highly correlated with one another (r = -0.95). Mean 4-km run speed was found to be closely related to vOBLA (r = 0.86), La12 (r = -0.88) and VO2max (r = 0.86). Reproducibility of both vOBLA and La12 was found to be good; test and re-test scores were highly correlated (r greater than or equal to 0.93) and did not differ significantly (p greater than 0.05). The present study suggests that vOBLA may be a valid and reproducible predictor of run performance in individuals who are not endurance athletes. It was not, however, found to be better in these respects than La12, the measurement of which would be easier and less traumatic to the subject since it would require less blood sampling.
据报道，血乳酸堆积起始时的跑步速度（vOBLA）与耐力跑成绩高度相关。从递增式跑步机跑步过程中采集的毛细血管血样中，测定了一组11名男性（不包括耐力运动员）的vOBLA以及跑步速度为12公里/小时时的血乳酸浓度（La12）。研究了这些变量、4公里跑成绩与最大摄氧量（VO2max）之间的相互关系。vOBLA和La12彼此高度相关（r = -0.95）。发现平均4公里跑速度与vOBLA（r = 0.86）、La12（r = -0.88）和VO2max（r = 0.86）密切相关。发现vOBLA和La12的可重复性都很好；测试和重新测试分数高度相关（r≥0.93）且无显著差异（p＞0.05）。本研究表明，vOBLA可能是未经过耐力训练个体跑步成绩的有效且可重复的预测指标。然而，在这些方面并未发现它比La12更好，因为测量La12对受试者来说更容易且创伤更小，因为它所需的采血更少。
