The relationship between power and time to fatigue in cycle ergometer exercise
Deutscher übersetzter Titel: | Die Beziehung zwischen Kraft und Ermüdungszeit bei der Fahrradergometerbelastung |
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Autor: | Hill, D.W. |
Erschienen in: | International journal of sports medicine |
Veröffentlicht: | 25 (2004), 5, S. 357-361, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource Elektronische Ressource (online) |
Sprache: | Englisch |
ISSN: | 0172-4622, 1439-3964 |
DOI: | 10.1055/s-2004-815838 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU200502000340 |
Quelle: | BISp |
Abstract des Autors
The purpose of this study was to evaluate three critical power (Pcritical) models. Ten university students performed tests that elicited fatigue in >2 min to ∼10 min. Power and time data were fit to a 2-parameter hyperbolic model, a 3-parameter hyperbolic model, and a 3-parameter exponential model. Models described the power-time relationship well (R2≥0.995). However, Pcritical (209±51 W; SEE: 20±47 W) and the time constant (198±87 s; SEE: 103±246 W) from the exponential model have no obvious meaning. The 2-parameter model produced Pcritical (187±38 W) and anaerobic work capacity (20.4±9.0 kJ) that have known physiological meaning, with excellent confidence (SEE: 2±2 W and 1.0±1.0 kJ, respectively). Addition of a maximal power parameter to the 2-parameter model did not improve description of the relationship, and the third parameter was superfluous. The 2-parameter model was preferred because, for the range of exercise durations used in this study, it describes the power-relationship adequately and in a most parsimonious fashion. Verf.-Referat