Zusammenfassung

Background: Cardio-respiratory capacity is an important factor in human health. It's quality depends on many objective factors (such as age and gender), but it can be influenced also by others (physical activity, nutrition). Low level of cardio-respiratory capacity significantly correlates with numerous health failures. Objective: Evaluation of the cardio-respiratory capacity in athletes enables a prediction of performance. In a non-sporting population a critically low level of cardio-respiratory capacity could be a warning signal of a high risk of diseases. The Spiroergometric examination needs very sophisticated technical equipment including O 2 -CO 2 analyzer. The aim of the study was to examine the possibility of how to replace direct measurement of oxygen consumption by the method. Methods: 2 777 protocols from the data base of examinations performed in the period of 1994 till 2015 were used. Cardio-respiratory capacity in all examinations was evaluated according to maximal oxygen uptake VO 2 max, physical working capacity W170 and maximal performance on the cyclo-ergometer. Step-vice increased workload on cyclo-ergometer based on procedure used in International Biological Program was applied to obtain the characteristics of cardio-respiratory capacity of each subject (2 015 men and 762 women). Results: Correlation coefficients r and regression equations of cardio-respiratory capacity characteristics (W170, W170/kg, VO 2 max, VO 2 max/kg, Wmax, Wmax/kg) were calculated. The highest correlation was found between VO 2 max and Wmax and between VO 2 max/kg and Wmax/kg, both in men and women ( r = .89 in men and r = .85 in women for VO 2 max and Wmax). The most important regression equations are: (men) VO 2 max = 0.0095 . Wmax + 0.54 (l/min) ( r = .89), VO 2 max/kg = 8.3 . Wmax/kg + 13 (ml/min/kg) ( r = .83); (women) VO 2 max = 0.0083 . Wmax + 0.67 (l/min) ( r = .85), VO 2 max/kg = 8.0 . max/kg + 13 (ml/min/kg) ( r = .83). Conclusions: It was proved that VO 2 max and VO 2 max/kg values could be calculated ...