Further increase in high density lipoprotein in trained males after enhanced training.

Eight well-trained males were studied before, during and after 6 months of a progressively increased amount of endurance training in order to elucidate the effects on the apoproteins and apolipoproteins. Initially high HDL-cholesterol levels were revealed (1.62 +/- 0.15 mmol X 1(-1), mean +/- SE.). After a transient but not significant, slight decline at the onset of the increased training program (1.57 +/- 0.06 mmol X 1(-1] HDL-cholesterol increased gradually to the end of the training period (1.92 +/- 0.12 mmol X 1(-1). There was an increased aerobic capacity as judged by maximal oxygen uptake and by lactate concentration during standardized submaximal work. However, at the end of the training period, a levelling off in maximal oxygen uptake was revealed, while HDL-cholesterol was still increasing. The present data demonstrate that HDL can be influenced by training at all levels of aerobic capacity.