Some metabolical aspects of physical exercise under laboratory and field conditions

Parameters of exercise physiology were studied in nearly 300 subjects to resolve whether these indices were equally suitable under laboratory and field conditions to assess the level of physical fitness and optimum work load. Respiratory gas exchange, heart rate and exercise acidosis parameters were studied. The inference drawn on the basis of the obtained data has been that both the mode and the intensity of the imposed exercise exert significant influence on the variation of physiological parameters. During running either on the treadmill or in the field test, blood lactate levels were comparable, but performances related to these concentrations were not the same. When different modes of exercise were employed, also lactate levels differed between the laboratory and field studies. The performance of patients under or after exercise rehabilitation following acute myocardial infarction by using instrumental monitoring in the laboratory was found to excel that attained during rehabilitation exercise training. Any change in the level of physical fitness can only be reliably followed when physiological parameters are obtained with the same mode of exercise and intensity under the same environmental conditions. Modern training planning of sports and exercise should take into account the data derived from both the laboratory and the field studies concerning cardiorespiratory system and metabolism.