[Significance of fixed anaerobic threshold, training lactate and training heart rate for bicycle ergometer training with myocardial infarct patients].
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.


RESULTS
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.
Meyer
K
K
Weidemann
H
H
D000319:Adrenergic beta-Antagonists / Q000627:therapeutic use; D002302:Cardiac Output / Q000187:drug effects; D001026:Coronary Artery Bypass; D004562:Electrocardiography; D005080:Exercise Test; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D007773:Lactates / Q000097:blood*; D019344:Lactic Acid; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000097:blood / Q000534:rehabilitation*; D010100:Oxygen / Q000097:blood; D010807:Physical Endurance / Q000187:drug effects
D000319:Adrenergic beta-Antagonists; D007773:Lactates; D019344:Lactic Acid; D010100:Oxygen
Die Bedeutung von fixer anaerober Schwelle, Trainingslaktat und Trainingsherzfrequenz für ein Fahrradergometertraining mit Herzinfarktpatienten.