An interventional study of Preventive treatment in Cardiovascular Fitness, sponsored by University of Texas at Austin. Completed at 1 site in United States. Open to participants aged 18 Years to 30 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2025-04-02.
Sponsored by University of Texas at Austin · Not applicable, Interventional, and Treatment
The purpose of this study is to investigate the chronic effects (i.e., 8 weeks, 3 times per week) of training at 50% and 75% of maximal power with 4-s sprint interval training on physiological adaptations. We previously examined the effect of training with an all-out intensity (i.e., 100% of maximal power) and reported increases in cardiorespiratory fitness. Now, we propose to examine the effects of a lower exercise intensity domains on cardiovascular fitness and its ability to stimulate the cardiorespiratory system. We hypothesize that training at 50% and 75% of maximal power will improve cardiorespiratory fitness similar to our previous findings while reducing the rate of perceived exertion during the exercise session. It is anticipated that the group engaged in training at 75% of maximal power will experience greater improvements in comparison to the group training at 50%.
Background Sprint interval training (SIT) is a well-established method for improving cardiovascular and anaerobic performance. While most research focuses on all-out efforts, less is known about the effects of submaximal sprint intensities on these adaptations. This study examined how training at 50%, 75%, and all-out (85%) of maximal anaerobic power (Pmax) influences aerobic capacity and anaerobic power over an 8-week training period.
Methods
Participants: 24 recreationally active adults (12 females, 12 males) were randomly assigned to one of three training groups:
50% Pmax
75% Pmax
All-out (85% Pmax)
Training Protocol: Participants completed three sessions per week for eight weeks. Each session consisted of thirty 4-second sprints on a cycling ergometer, totaling 10 minutes per session.
Measurements: Peak oxygen consumption (VO₂peak) and maximal anaerobic power (Pmax) were assessed before and after the training program.
University of Texas at Austin is the lead sponsor of 319 studies on the registry; 78 are open to participants now.
Of its 10 completed or terminated interventional studies of FDA-regulated products, 5 (50%) have results posted.
Counted across the registry records on this site, refreshed daily.
Exclusion Criteria:
Behavioral: Preventive treatment
Behavioral: Preventive treatment
Behavioral: Preventive treatment
4-second Sprint Interval Training (SIT) over 8 weeks to improve cardiovascular health.
Peak oxygen consumption
Time frame: From enrollment to the end of treatment at 8 weeks
Maximal anaerobic power
Time frame: From enrollment to the end of treatment at 8 weeks
This study is completed, as verified in Mar 2025. You cannot join it, but the record below documents what was studied.
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University of Texas at Austin