caa a22 4500 469054859 CHVBK 20180323132840.0 cr unu---uuuuu 170328e19920301xx s 000 0 eng 10.1007/BF00705067 doi (NATIONALLICENCE)springer-10.1007/BF00705067 The power-duration product — evaluation of a new reference system for cardiopulmonary exercise testing [Elektronische Daten] [Hans-Willi Breuer, Ulrich Pfeiffer, Heinrich Worth, Gerd Heusch] Summary: The aim of this study was to assess the discriminatory power of the new reference system, power-duration product (PDP), for the analysis of haemodynamic and metabolic variables derived from cardiopulmonary exercise tests. The PDP was calculated as the cumulative index of the product of power (W) times the duration (minutes) of each individual exercise step. The study comprised 30 healthy male volunteers, who were classified into three groups with respect to their regular physical activity: 10 untrained medical students (students), 10 sprinters and long-jumpers (athletes) and 10 endurance athletes performing triathlon (triathletes). Twenty metabolic and haemodynamic variables were recorded throughout exhaustion-limited cycling ergometry. The data were analysed with respect to five reference systems (heart rate, relative and absolute oxygen consumption/body surface area, power, and PDP). A total of 14 differences between modified time courses of haemodynamic and metabolic variables in the three groups of volunteers were observed by reference to PDP, 12 by reference to relative oxygen consumption/body surface area, 11 by reference to heart rate, 8 by reference to absolute oxygen consumption/body surface area, and 7 by reference to power. When using PDP as the reference, the time courses of 8 parameters differed significantly between students and triathletes, 5 between students and athletes, and 1 between athletes and triathletes. In addition to its discriminatory superiority for the comparison of different groups characterized by different cardiopulmonary training and endurance, it was found that PDP permitted a better characterization of the individually performed exercise than the consideration of power per se. Springer-Verlag, 1992 Cardiopulmonary exercise test nationallicence Reference system nationallicence Athletes nationallicence Triathletes nationallicence Training nationallicence Breuer Hans-Willi Department of Pathophysiology, Center of Internal Medicine, University of Essen, Hufelandstrasse 55, W-4300, Essen, Germany aut Pfeiffer Ulrich Department of Cardiology, Pulmonology and Angiology, Heinrich-Heine-University of Düsseldorf, Düsseldorf, Germany aut Worth Heinrich Department of Cardiology, Pulmonology and Angiology, Heinrich-Heine-University of Düsseldorf, Düsseldorf, Germany aut Heusch Gerd Department of Pathophysiology, Center of Internal Medicine, University of Essen, Hufelandstrasse 55, W-4300, Essen, Germany aut European Journal of Applied Physiology and Occupational Physiology Springer-Verlag 65/2(1992-03-01), 118-123 0301-5548 65:2<118 1992 65 421 https://doi.org/10.1007/BF00705067 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00705067 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Breuer Hans-Willi Department of Pathophysiology, Center of Internal Medicine, University of Essen, Hufelandstrasse 55, W-4300, Essen, Germany aut NATIONALLICENCE 700 1- Pfeiffer Ulrich Department of Cardiology, Pulmonology and Angiology, Heinrich-Heine-University of Düsseldorf, Düsseldorf, Germany aut NATIONALLICENCE 700 1- Worth Heinrich Department of Cardiology, Pulmonology and Angiology, Heinrich-Heine-University of Düsseldorf, Düsseldorf, Germany aut NATIONALLICENCE 700 1- Heusch Gerd Department of Pathophysiology, Center of Internal Medicine, University of Essen, Hufelandstrasse 55, W-4300, Essen, Germany aut NATIONALLICENCE 773 0- European Journal of Applied Physiology and Occupational Physiology Springer-Verlag 65/2(1992-03-01), 118-123 0301-5548 65:2<118 1992 65 421 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer