Adaptations to 4-s Sprint Interval Training at Different Intensities

NCT06906393 | Completed

• 1 other identifier: STUDY00004970
• Study Type: interventional
• Target: 24
• Locations: 1 country
• Sites: 1

Brief Summary

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%.

Conditions

Cardiovascular Fitness

Keywords

exercise; cardiovascular fitness; sprint; interval training

Outcome Measures

Primary Outcomes (1)

• Peak oxygen consumption

  From enrollment to the end of treatment at 8 weeks

Secondary Outcomes (1)

• Maximal anaerobic power

  From enrollment to the end of treatment at 8 weeks

Study Arms (3)

Training group 50% Pmax

ACTIVE COMPARATOR

Behavioral: Preventive treatment

Training group 75% Pmax

EXPERIMENTAL

Behavioral: Preventive treatment

Training group All-out Pmax

EXPERIMENTAL

Behavioral: Preventive treatment

Interventions

Preventive treatment BEHAVIORAL

4-second Sprint Interval Training (SIT) over 8 weeks to improve cardiovascular health.

Training group 50% Pmax; Training group 75% Pmax; Training group All-out Pmax

Eligibility Criteria

• Age: 18 Years - 30 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

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

You may not qualify if:

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

Sponsors & Collaborators

• University of Texas at Austin: lead

Study Sites (1)

Human Performance Laboratory, Department of Kinesiology and Health Education, the University of Texas at Austin

Austin, Texas, 78712, United States

Location

MeSH Terms

Conditions

Motor Activity

Condition Hierarchy (Ancestors)

Behavior

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: March 24, 2025
• First Posted: April 2, 2025
• Study Start: October 30, 2023
• Primary Completion: October 2, 2024
• Study Completion: October 2, 2024
• Last Updated: April 2, 2025

Record last verified: 2025-03

Locations

US (1)