Presentation Type
Poster
Full Name of Faculty Mentor
Jakob Lauver, Kinesiology; Timothy Rotarius, Kinesiology; Justin Guilkey, Kinesiology
Major
Exercise and Sport Science
Presentation Abstract
The VO2 slow component (VO2SC) is a slow, exponential increase in oxygen consumption (VO2) that takes place during constant load exercise above the ventilatory threshold. The purpose of this study was to examine the amplitude of the VO2SC during various heavy-intensity interval exercise conditions. Seven males participated in a total of 7 visits, visit one consisted of a graded exercise test until volitional fatigue, and visits 2-7 consisted of 2 visits each of the 3 experimental conditions. Each experimental trial began with a 4-minute warm-up cycle at 20 watts, followed by the experimental condition, followed by a 4-minute cool-down cycle at 20 watts. The experimental conditions were; continuous (CON) which consisted of a 6-minute cycle at a constant work rate, interval (INT) which consisted of a 3-minute cycle at a constant work rate followed by 3-second rest intervals interspersed every 10 seconds for the remaining 3 minutes of the condition, and interval extended (EXT) which followed the same protocol as INT, however, intervals were continued until the work performed matched CON. The work rates for each experimental condition were set at a work rate corresponding to the VO2 at 50% between VO2peak and ventilatory threshold determined by the graded exercise test for each subject. Findings suggest that the VO2SC was attenuated with the addition of 3-sec recovery intervals during INT and EXT. This is possibly due to CON resulting in higher levels of myocardial work compared to INT and EXT, as shown by heart rate measurements within the trials.
Start Date
11-4-2023 10:00 AM
End Date
11-4-2023 12:00 PM
Disciplines
Exercise Science
Recommended Citation
Carter, Cade, "Attenuation of VO2 Slow Component during Heavy-intensity Interval Exercise" (2023). Undergraduate Research Competition. 27.
https://digitalcommons.coastal.edu/ugrc/2023/fullconference/27
Included in
Attenuation of VO2 Slow Component during Heavy-intensity Interval Exercise
The VO2 slow component (VO2SC) is a slow, exponential increase in oxygen consumption (VO2) that takes place during constant load exercise above the ventilatory threshold. The purpose of this study was to examine the amplitude of the VO2SC during various heavy-intensity interval exercise conditions. Seven males participated in a total of 7 visits, visit one consisted of a graded exercise test until volitional fatigue, and visits 2-7 consisted of 2 visits each of the 3 experimental conditions. Each experimental trial began with a 4-minute warm-up cycle at 20 watts, followed by the experimental condition, followed by a 4-minute cool-down cycle at 20 watts. The experimental conditions were; continuous (CON) which consisted of a 6-minute cycle at a constant work rate, interval (INT) which consisted of a 3-minute cycle at a constant work rate followed by 3-second rest intervals interspersed every 10 seconds for the remaining 3 minutes of the condition, and interval extended (EXT) which followed the same protocol as INT, however, intervals were continued until the work performed matched CON. The work rates for each experimental condition were set at a work rate corresponding to the VO2 at 50% between VO2peak and ventilatory threshold determined by the graded exercise test for each subject. Findings suggest that the VO2SC was attenuated with the addition of 3-sec recovery intervals during INT and EXT. This is possibly due to CON resulting in higher levels of myocardial work compared to INT and EXT, as shown by heart rate measurements within the trials.