Meyer K, Weidemann H
Z Kardiol. 1985 Aug;74(8):466-74.
302 male myocardial infarction patients were divided into 4 groups according to their symptom-limited physical working capacity and examined during bicycle ergometer training. Lactic acid and heart rate during training were measured.
Arterial lactic acid and training heart rate decreased proportionally with the reduction of the maximal symptom-limited working capacity. Arterial lactic acid levels in 4 training groups of 100, 75, 50 and 25 watts were 2.23 (2.56) mmol/l, 1.87 (2.32) mmol/l, 1.58 (1.73) mmol/l and 1.20 (1.11) mmol/l, respectively, p less than 0.001 (in bracket = with beta blocker). Decrease in arterial lactic acid levels according to the reduction of working capacity corresponded to a decrease of training heart rate. In patients with beta blocker therapy results were less pronounced. Intensity of training corresponded to about 80% of VO2 measured as maximal symptom-limited physical working capacity. Training heart rate corresponded to about 85% of maximal heart rate as measured at symptom-limited physical working capacity. The so-called fixed anaerobic threshold of 4 mmol/l lactic acid was not reached by patients with myocardial infarction up to a training intensity of 100 watts (approximately 1.3 watts/kg). From this study it can be concluded that fixed anaerobic threshold and lactic acid are of secondary importance in determining the intensity of endurance training in patients with myocardial infarction.
302名男性心肌梗死患者根据其症状限制的体力工作能力分为4组，并在自行车测力计训练期间进行检查。测量训练期间的乳酸和心率。
动脉乳酸和训练心率随着最大症状限制工作能力的降低而呈比例下降。100瓦、75瓦、50瓦和25瓦的4个训练组的动脉乳酸水平分别为2.23（2.56）mmol/L、1.87（2.32）mmol/L、1.58（1.73）mmol/L和1.20（1.11）mmol/L，p<0.001（括号内=使用β受体阻滞剂）。随着工作能力的降低，动脉乳酸水平的下降与训练心率的下降相对应。接受β受体阻滞剂治疗的患者结果不太明显。训练强度相当于以最大症状限制体力工作能力测量的VO2的约80%。训练心率相当于以症状限制体力工作能力测量的最大心率的约85%。心肌梗死患者在训练强度达到100瓦（约1.3瓦/千克）之前未达到所谓的4mmol/L乳酸固定无氧阈值。从这项研究可以得出结论，固定无氧阈值和乳酸在确定心肌梗死患者耐力训练强度方面具有次要重要性。
