[Influence of physical training on resting and exercise haemodynamics in patients after acute myocardial infarction (author's transl)].

Resting and exercise haemodynamics were investigated in 17 patients with acute myocardial infarction after hospital treatment at the end of the third week. After 8 weeks of physical training measurements were repeated. The data were analyzed for the whole group and also with respect to enddiastolic pulmonary pressure (PAEDP) during exercise (50 Watts). Group I: (PAEDP less than 20 mm Hg) was regarded as normal. Group II: (PAEDP greater than 20 mm Hg) as pathological. Systolic and diastolic blood pressure during rest and exercise were not influenced by the training programme in the total group nor on subdivision into groups I and II. Resting heart frequency was reduced by 5 beats per minute in the total group after rehabilitation, but there was an increase of 10 beats per minute (p less than 0.05) on exercise in group I. Resting double product remained unchanged in all groups, but during exercise an increase from 15.8 +/- 3.4 to 18.1 +/- 4.1 (p less than 0.05) was noticed in group I. The reduction in double product during exercise in group II was insignificant. Under resting conditions PAEDP remained unchanged, but during exercise the mean PAEDP in the total group increased from 21.2 +/- 6.0 mm Hg to 24.3 +/- 6.0 mm Hg after rehabilitation. 15 out of 17 patients showed pathological values after rehabilitation. Increase in heart frequency and PAEDP may be interpreted as signs of heart failure during exercise. Therefore, an intensive exercise programme three weeks after acute myocardial infarction may be premature.