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Effects of Short Duration High-intensity Interval Training on Peak Oxygen Consumption

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ClinicalTrials.gov Identifier: NCT04656509
Recruitment Status : Completed
First Posted : December 7, 2020
Last Update Posted : December 9, 2020
Sponsor:
Information provided by (Responsible Party):
University of Texas at Austin

Study Description
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Brief Summary:
High-intensity interval training (HIIT) is an effective tool to improve cardiovascular fitness and maximal anaerobic power. Different methods of HIIT have been studied but the effect of a maximal effort cycling and very short exercise time (i.e., 4-s) with short recovery time (15-30 s) and a high number of repetitions (i.e., 30 bouts) is unknown.

Condition or disease Intervention/treatment Phase
Cardiovascular Fitness Other: 4-s sprint inertial load training Not Applicable

Detailed Description:
The investigators examined the effects of training at maximal anaerobic power during cycling (PC) on maximal anaerobic power, peak oxygen consumption (VO2peak), and total blood volume in 11 young healthy individuals (age: 21.3±0.5 y) (6 men, 5 women). Methods: Participants trained three times a week for eight weeks performing a PC program consisting of 30 bouts of 4-s at an all-out intensity (i.e., 2 minutes of exercise per session). The cardiovascular stress progressively increased over the weeks by decreasing the recovery time between sprints (30 to 24 to 15-s) and thus session time decreased from 17 to < 10 min.
Study Design
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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 11 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Effects of Short Duration High-intensity Interval Training on Peak Oxygen Consumption
Actual Study Start Date : April 1, 2019
Actual Primary Completion Date : March 31, 2020
Actual Study Completion Date : April 24, 2020
Arms and Interventions
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Arm Intervention/treatment
Experimental: 4-s sprint inertial load training
Participants trained three times a week for eight weeks following the training program consisting of 30 bouts of 4s all-out cycling on an inertial-load ergometer with progressively decreasing recovery time (30 to 24 to 15s).
 Other: 4-s sprint inertial load training
A program employing 30 bouts of 4s inertial load sprint training with progressively reduced recovery time (30 to 15 s) between sprints is effective for improving blood volume, VO2peak and maximal power.


Outcome Measures
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Primary Outcome Measures :
  1. Cardiovascular changes [ Time Frame: Pre and post training (8 weeks) ]
    Maximal oxygen consumption (VO2max) is an indicator of health and fitness. The investigators measured VO2max with a graded exercise using electronically braked cycling ergometer.

  2. Blood volume changes [ Time Frame: Pre and post training (8 weeks) ]
    Hematological variables can effect the performance of the people. The investigators measured total blood volume, red blood cell volume, and plasma volume before and after training.


Secondary Outcome Measures :
  1. Performance changes [ Time Frame: Pre and post training (8 weeks) ]
    Study participants trained at maximal anaerobic power for 4-s. Therefore, the investigators measured maximal anaerobic power with different testing methods.


Eligibility Criteria
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Ages Eligible for Study:   18 Years to 49 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

Young (18-30), Healthy, Recreationally active, but untrained (not meeting ACSM's recommendations of 150 min/week of moderate-vigorous aerobic exercise) -

Exclusion Criteria:

Cardiovascular disease Smoking Subjects who were exercising regularly (>75 min/week) were excluded.

-

Contacts and Locations
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Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04656509


Locations
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United States, Texas
Human Performance Laboratory, Department of Kinesiology and Health Education, the University of Texas at Austin
Austin, Texas, United States, 78712
Sponsors and Collaborators
University of Texas at Austin
Investigators
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Study Director: Edward F Coyle, Ph.D. University of Texas at Austin
More Information
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Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):

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Responsible Party: University of Texas at Austin
ClinicalTrials.gov Identifier: NCT04656509    
Other Study ID Numbers: 2019-01-0132
First Posted: December 7, 2020    Key Record Dates
Last Update Posted: December 9, 2020
Last Verified: December 2020

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Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by University of Texas at Austin:
exercise
cardiovascular fitness
sprinting
performance