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

The University of Texas System (UT)

Status: Completed

Conditions: Cardiovascular Fitness

Treatments: Other: 4-s sprint inertial load training

Study type: Interventional

Funder types: Other

Identifiers

NCT04656509

2019-01-0132

Details and patient eligibility

About

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.

Full 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.

Enrollment: 11 patients

Sex: All

Ages: 18 to 49 years old

Volunteers: Accepts Healthy Volunteers

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.

Trial design

Primary purpose: Treatment

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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11 participants in 1 patient group

4-s sprint inertial load training

Experimental group

Description:

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).

Treatment:

Other: 4-s sprint inertial load training