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- Title
Physiological Breakpoints and Maximal Steady-State of Cycling.
- Authors
Scott, Cory; Wyatt, Frank; Winchester, Jason; Williamson, Keith; Welter, Ashleigh; Brown, Sean
- Abstract
The aim of this study was to examine various physiological thresholds and their association with maximal steady-state exercise. Elite level cyclists (n = 15) participated in the study. All data were collected on a Velotron™ cycle ergometer, lactate meter, metabolic cart, and a heart rate monitor. Blood lactate (mM), VO2 (mL⋅kg-1⋅min-1), and heart rate (beats⋅min-1) data were collected every minute for both the VO2 max test and the maximal steady-state test. Statistical analysis included the descriptive mean (±SD) of the subjects and the test results, the comparison of each physiological measurement and the mean (±SD) values, and t-tests analyzing the wattage corresponding to the said variable and physiological test. Statistical significance was set at P≤0.05. There was no noticeable trend of one threshold being indicative of another threshold. Heart rate and ventilatory thresholds displayed strong correlations with their respective values at steady-state intensity, while blood lactate values at threshold exhibited weak, but significant correlations to values obtained at steady-state efforts. The correlation shown in the study between heart rate threshold and ventilatory threshold and their respective values at steady-state can help provide evidence-based training information, which can lead to an increase in athletic performance by training the proper bioenergetic system.
- Subjects
CYCLING; EXERCISE physiology; CYCLIST physiology; BLOOD lactate; HEART beat
- Publication
Journal of Exercise Physiology Online, 2015, Vol 18, Issue 3, p33
- ISSN
1097-9751
- Publication type
Article