NCT06912932

Brief Summary

The purpose of this study is to investigate the acute effects of different intensities (i.e., 50, 75, and 100% of maximal anaerobic power) of 4-s sprint interval exercise on physiological responses. Secondly, it will determine the relationship between intensity and recovery duration (i.e., 15, 30, or 45-s) that will stimulate the cardiovascular and metabolic systems.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
11

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Apr 2023

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

April 4, 2023

Completed
1.5 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

October 2, 2024

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

October 2, 2024

Completed
6 months until next milestone

First Submitted

Initial submission to the registry

March 24, 2025

Completed
13 days until next milestone

First Posted

Study publicly available on registry

April 6, 2025

Completed
Last Updated

April 6, 2025

Status Verified

March 1, 2025

Enrollment Period

1.5 years

First QC Date

March 24, 2025

Last Update Submit

March 28, 2025

Conditions

Cardiovascular Fitness

Keywords

exercisecardiovascular fitnesssprintvo2maxinterval training

Outcome Measures

Primary Outcomes (1)

  • Cardiovascular changes

    The %VO2peak associated with repeated submaximal power sprints (%Pmax), particularly when paired with varying rest periods, remains unknown. The aim of this study was to systematically investigate the cardiovascular changes for better exercise programming, measured in mL/min/kg.

    From enrollment (Day 1) to the end of treatment (9 trials) (Day 11), through study completion, an average of 5 weeks.

Study Arms (9)

50% Pmax and 15-s rest duration

ACTIVE COMPARATOR

Participants used 50% Pmax and 15-s rest duration during 30 bouts of 4-s sprint interval training.

Behavioral: Preventive

50% Pmax and 30-s rest duration

ACTIVE COMPARATOR

Participants used 50% Pmax and 30-s rest duration during 30 bouts of 4-s sprint interval training.

Behavioral: Preventive

50% Pmax and 45-s rest duration4

ACTIVE COMPARATOR

Participants used 50% Pmax and 45-s rest duration during 30 bouts of 4-s sprint interval training.

Behavioral: Preventive

75% Pmax and 15-s rest duration

ACTIVE COMPARATOR

Participants used 75% Pmax and 15-s rest duration during 30 bouts of 4-s sprint interval training.

Behavioral: Preventive

75% Pmax and 30-s rest duration

ACTIVE COMPARATOR

Participants used 75% Pmax and 30-s rest duration during 30 bouts of 4-s sprint interval training.

Behavioral: Preventive

75% Pmax and 45-s rest duration

ACTIVE COMPARATOR

Participants used 75% Pmax and 45-s rest duration during 30 bouts of 4-s sprint interval training.

Behavioral: Preventive

All-out Pmax and 15-s rest duration

EXPERIMENTAL

Participants used all-out Pmax and 15-s rest duration during 30 bouts of 4-s sprint interval training.

Behavioral: Preventive

all-out Pmax and 30-s rest duration

EXPERIMENTAL

Participants used all-out Pmax and 30-s rest duration during 30 bouts of 4-s sprint interval training.

Behavioral: Preventive

all-out Pmax and 45-s rest duration

EXPERIMENTAL

Participants used all-out Pmax and 45-s rest duration during 30 bouts of 4-s sprint interval training.

Behavioral: Preventive

Interventions

PreventiveBEHAVIORAL

systematically investigate the acute physiological responses induced by three levels of %Pmax intensities (50% and 75% of Pmax and all-out efforts) with three varying rest periods (15, 30, and 45-s) between thirty 4-s sprints.

50% Pmax and 15-s rest duration50% Pmax and 30-s rest duration50% Pmax and 45-s rest duration475% Pmax and 15-s rest duration75% Pmax and 30-s rest duration75% Pmax and 45-s rest durationAll-out Pmax and 15-s rest durationall-out Pmax and 30-s rest durationall-out Pmax and 45-s rest duration

Eligibility Criteria

Age18 Years - 30 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (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.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

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
BASIC SCIENCE
Intervention Model
CROSSOVER
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

March 24, 2025

First Posted

April 6, 2025

Study Start

April 4, 2023

Primary Completion

October 2, 2024

Study Completion

October 2, 2024

Last Updated

April 6, 2025

Record last verified: 2025-03

Locations

US(1)