An interventional study of High intensity interval training in Improved VO2max and Cardiac Output in Response to Training, sponsored by California State University, San Marcos. Completed at 1 site in United States. Open to female participants aged 18 Years to 45 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2020-06-26.
Sponsored by California State University, San Marcos · Not applicable, Interventional, and Prevention
The purpose of this study was to determine if ethnicity alters training responsiveness to a low dose of high intensity interval training in inactive women.
Prior to the session, women completed a 4-minute warmup at 10 % PPO. Each subject completed 9 sessions of HIIT over a 3-week period which consisted of eight to ten 1-minute bouts of cycling at 85% PPO with 75-second recovery between bouts at 10 % PPO. This protocol is well-tolerated in inactive individuals. Continuously during each session, heart rate was monitored using telemetry. On days 1, 3, 6, and 9 of training, the physical activity enjoyment scale (PACES) was completed. VO2max and cardiac output max were assessed prior to training, as well as post.
1,273 studies on the registry are indexed under Sedentary Behavior; 300 are open to participants now.
This study's enrollment of 22 is below the median of 60 across 1,076 interventional studies indexed under Sedentary Behavior.
Browse Sedentary Behavior studies →California State University, San Marcos is the lead sponsor of 9 studies on the registry; 1 is open to participants now.
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Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
BMI (body mass index)
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Participants performed 9 sessions of HIIT over 3 weeks, utilizing progressive overload by increasing the number of bouts by 1 each week. They started with 8 bouts on week 1, 9 bouts on week 2, and 10 bouts on week 3.
Other: High intensity interval training
Participants performed 9 sessions of HIIT over 3 weeks, utilizing progressive overload by increasing the number of bouts by 1 each week. They started with 8 bouts on week 1, 9 bouts on week 2, and 10 bouts on week 3.
Other: High intensity interval training
Repeated, brief, and intense exercise bouts separated by active recovery
Change in baseline in VO2max at 3 weeks
Each participant performed VO2max testing on an electronically-braked cycle ergometer using a ramp protocol. During exercise, subjects expired through a plastic mouthpiece and low resistance valve into tubing connected to a mixing chamber. Measures of ventilation and expired fractions of oxygen and carbon dioxide were obtained throughout exercise by a metabolic cart. Gas exchange data including VO2, VCO2, and ventilation were time-averaged every 15 seconds. The test was terminated when the subject's pedal cadence was below 50 rev/min.
Time frame: 3 weeks
Change in baseline in cardiac output max at 3 weeks
During the VO2max assessment, participants wore a thoracic impedance device to measure heart rate and stroke volume, calculating their cardiac output.
Time frame: 3 weeks
Plan to share: Undecided
Ran from Jun 2017 to primary completion in Dec 2019, 30 months.
Of 733 non-industry interventional studies with no phase under Sedentary Behavior, half reached primary completion within 14 months of starting (the median), counting those still running; a quarter within 6 and three quarters within 31. This study's 30 months is above that.
Counting every sponsor, half of 741 studies reached it within 14 months; a quarter within 6 and three quarters within 31.
How these figures are worked out, and which studies are left out of them.
This study is completed, as verified in Jun 2020. You cannot join it, but the record below documents what was studied.
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California State University, San Marcos