Physiological strain to prolonged exercise bouts at the walk–run transition speeds depends on locomotion mode in healthy untrained men
Deutscher übersetzter Titel: | Die physiologische Beanspruchung von verlängerten Trainingsreizen im Übergang von der Geh- zur Laufgeschwindigkeit ist bei gesunden, untrainierten Männern abhängig vom Bewegungsmodus |
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Autor: | Monteiro, W.D.; Cunha, F.A.; Ivo, E.X.; Freire, R.A.; Silva, B.S.; Farinatti, P. |
Erschienen in: | Scandinavian journal of medicine & science in sports |
Veröffentlicht: | 27 (2017), 7, S. 762-769, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Elektronische Ressource (online) Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 0905-7188, 1600-0838 |
DOI: | 10.1111/sms.12693 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201709007931 |
Quelle: | BISp |
Abstract des Autors
This study compared the physiological strain induced by prolonged walking and running performed at the walk–run transition speed (WRTS) in healthy untrained men. Twenty volunteers (age: 28 +/- 5.01 years; height: 174.0 +/- 0.3 cm; body mass: 74.5 +/- 0.6 kg) underwent the following: (a) ramp-incremental maximal cardiopulmonary exercise test (CPET); (b) specific protocol to detect the WRTS; and (c) two 30-min walking and running bouts at WRTS (mean +/- SD: 6.9 +/- 0.06 km/h). Expired gases were collected during exercise bouts via the metabolic cart. A significant effect of locomotion mode (F = 4.8, P < 0.001) was observed with running resulting in higher cardiorespiratory responses than walking at the WRTS (oxygen uptake: mean difference = 0.26 L/min; pulmonary ventilation: mean difference = 5.53 L/min; carbon dioxide output: mean difference = 0.32 L/min; heart rate: mean difference = 13 beats/min; total energy expenditure: mean difference = 59 kcal). The rating of perceived exertion was similar across locomotion modes (mean difference = 0.3; P = 0.490). In conclusion, running promoted greater cardiorespiratory responses than walking at the WRTS in untrained healthy men. These data might have practical impact on aerobic training performed at intensities corresponding to WRTS.