Date of Award
Spring 5-3-2024
Document Type
Thesis
Degree Name
Bachelor of Science (BS)
Department
Kinesiology
College
College of Health and Human Performance
First Advisor
Timothy R. Rotarius
Abstract/Description
This study examined the physiological responses to continuous, heavy-intensity (CONT), intermittent, heavy-intensity (INT), and intermittent, heavy-intensity cycling with limb occlusion (INT-LO). METHODS: Five young (23.2 ± 5.5 yrs.), healthy subjects participated in this study and completed a total of seven visits. Three conditions were completed by each subject: CONT, INT, and INT-LO. Each condition consisted of a 4-minute warm-up (20 W), 6 minutes of exercise, followed by 5 minutes of recovery cycling. For CONT, exercise was performed at Δ50% for the entire 6 minutes. INT and INT-LO alternated between 15 seconds of work at Δ50%, and then 3 seconds of recovery cycling (20 W). During the INT-LO condition, during the three seconds of rest, blood flow was occluded to the lower extremities. Oxygen uptake kinetics, sEMG, and pleasantness of exercise were all assessed during each condition. RESULTS: The amplitude of the V̇O2 slow component (A3’) was significantly lower in INT (219 ± 39 mL/min) and INT-LO (286 ± 45 mL/min) compared to CONT (391 ± 116 mL/min, p < 0.05). End-exercise V̇CO2, V̇E, and HR were all greatest in CONT (p < 0.05). There were no significant differences in sEMG between conditions. Pleasantness of exercise was lower in the 6th minute of exercise in the INT-LO condition (-0.3 ± 3.1) and CONT (0.3 ± 2.2) compared to INT (1.6 ± 1.6). CONCLUSION: The addition of limb occlusion to heavy-intensity, intermittent cycling does not significantly alter the overall V̇O2 response and the appearance of the V̇O2SC compared to INT and CONT.
Recommended Citation
Lomascolo, Sela, "The Effects of Limb Occlusion on the Slow Component of V̇O2 during Intermittent, Heavy-intensity Cycling" (2024). Honors Theses. 483.
https://digitalcommons.coastal.edu/honors-theses/483