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

Sponsor

University of Texas at Austin (Other)

Overall Status

Completed

CT.gov ID

NCT04656509

Collaborator

(none)

Enrollment

Location

Arm

12.8

Actual Duration (Months)

0.9

Patients Per Site Per Month

Study Details

Study Description

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	N/A

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

Study Type:

Interventional

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 :

Apr 1, 2019

Actual Primary Completion Date :

Mar 31, 2020

Actual Study Completion Date :

Apr 24, 2020

Arms and Interventions

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.

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

Primary Outcome Measures

Cardiovascular changes [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.
Blood volume changes [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

Performance changes [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

Criteria

Ages Eligible for Study:

18 Years to 49 Years

Sexes Eligible for Study:

All

Accepts Healthy Volunteers:

Yes

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

Locations

	Site	City	State	Country	Postal Code
1	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

Study Director: Edward F Coyle, Ph.D., University of Texas at Austin

Study Documents (Full-Text)

None provided.

More Information

Publications

None provided.

Responsible Party:

University of Texas at Austin

ClinicalTrials.gov Identifier:

NCT04656509

Other Study ID Numbers:

2019-01-0132

First Posted:

Dec 7, 2020

Last Update Posted:

Dec 9, 2020

Last Verified:

Dec 1, 2020

Studies a U.S. FDA-regulated Drug Product:

Studies a U.S. FDA-regulated Device Product:

Keywords provided by University of Texas at Austin

exercise

cardiovascular fitness

sprinting

performance

Study Results

No Results Posted as of Dec 9, 2020