Effect of Sprint Interval Training Frequency on Improvements in Fitness

Sponsor

Wilfrid Laurier University (Other)

Overall Status

Recruiting

CT.gov ID

NCT06142942

Collaborator

(none)

100

Enrollment

Location

Arms

Anticipated Duration (Months)

11.1

Patients Per Site Per Month

Study Details

Study Description

Brief Summary

The goal of this study is to learn how the number of weekly exercise sessions affects improvements in fitness in healthy university aged students. The main question it aims to answer is how training frequency affects improvements in fitness. Participants will complete a pre-testing sessions to assess fitness level and sprint performance. Following this participants are assigned to one of four groups. A group that exercises 2 days a week, a group that trains 3 days a week, a group that trains 4 days a week, or a no-exercise control group. Participants in this group will not complete any training and allow the researchers to compare the exercise groups to a group that didn't train. Each participant will train for 4 weeks. During each training session participants will complete 4-6 30 second all-out sprints with 4 minutes of rest between each. Participants will complete the same tests they did during the pre-testing session following the 4 weeks of training to see how frequency affects improvements.

Condition or Disease	Intervention/Treatment	Phase
Cardiorespiratory Fitness	Other: Exercise Intervention	N/A

Study Design

Study Type:

Interventional

Anticipated Enrollment :

100 participants

Allocation:

Non-Randomized

Intervention Model:

Parallel Assignment

Intervention Model Description:

Following pre-testing participants are assigned to one of the four groups based on their baseline cardiorespiratory fitness to ensure no differences between groups at baseline. Participants will train 2, 3, or 4 days a week, or be assigned to the control group (no training) and re-test following the 4 week intervention.Following pre-testing participants are assigned to one of the four groups based on their baseline cardiorespiratory fitness to ensure no differences between groups at baseline. Participants will train 2, 3, or 4 days a week, or be assigned to the control group (no training) and re-test following the 4 week intervention.

Masking:

Single (Outcomes Assessor)

Masking Description:

All pre- and post-testing is completed by researchers not involved in training, and thus are blinded to which group participants are assigned to. This prevents any potential bias when researchers are completing post-testing sessions.

Primary Purpose:

Treatment

Official Title:

Effect of Sprint Interval Training Frequency on Cardiorespiratory Fitness Adaptations

Actual Study Start Date :

Nov 1, 2023

Anticipated Primary Completion Date :

Aug 1, 2024

Anticipated Study Completion Date :

Aug 1, 2024

Arms and Interventions

Arm	Intervention/Treatment
Experimental: 2 days per week group Participants in this group complete 2 training sessions each week (Monday and Thursday).	Other: Exercise Intervention Participants will complete an exercise intervention where they will exercise 2, 3, or 4 days per week for 4 weeks.
Experimental: 3 days per week group Participants in this group complete 3 training sessions each week (Monday, Wednesday, and Friday).	Other: Exercise Intervention Participants will complete an exercise intervention where they will exercise 2, 3, or 4 days per week for 4 weeks.
Experimental: 4 days per week group Participants in this group complete 4 training sessions each week (Monday, Tuesday, Thursday, and Friday).	Other: Exercise Intervention Participants will complete an exercise intervention where they will exercise 2, 3, or 4 days per week for 4 weeks.
No Intervention: No-exercise Control group This group does not complete any training intervention. They are asked to maintain their regular physical activity habits.

Outcome Measures

Primary Outcome Measures

Cardiorespiratory fitness [This will be assessed before and after 4 weeks of training (or control).]
Cardiorespiratory fitness will be assessed through the measurement of maximal oxygen consumption. This will be determined using an incremental exercise test to volitional fatigue on a treadmill. A metabolic cart will be used to assess oxygen consumption using indirect calorimetry

Secondary Outcome Measures

Anaerobic performance [This will be assessed before and after 4 weeks of training (or control).]
Anaerobic performance will be assessed during one 30 second "all-out" sprint completed on a self-propelled treadmill. Participants will be instructed to run as fast and as hard as they can for the entire 30 seconds. Speed will be recorded during this sprint and used to determine, peak, average, and minimum speed, as well as fatigue index.

Eligibility Criteria

Criteria

Ages Eligible for Study:

18 Years to 35 Years

Sexes Eligible for Study:

All

Accepts Healthy Volunteers:

Yes

Inclusion Criteria:

Recreationally active: exercising at least 2-3 days per week and not currently involved in, or had been involved in a systematic training program for at least 3 months prior to data collection.
Safe to become physically active based on the Canadian Society for Exercise Physiology
Get Active Questionnaire.

Exclusion Criteria:

Smoking
Consuming supplements known to affect metabolism (e.g., creatine, carnitine, nitric oxide, brain chain amino acids).
Failure to meet inclusion criteria

Contacts and Locations

Locations

	Site	City	State	Country	Postal Code
1	Wilfrid Laurier University	Waterloo	Ontario	Canada	N2L 3C5

Sponsors and Collaborators

Wilfrid Laurier University

Investigators

Principal Investigator: Tom J Hazell, PhD, Wilfrid Laurier University

Study Documents (Full-Text)

None provided.

More Information

Publications

None provided.

Responsible Party:

Tom Hazell, Principal Investigator, Wilfrid Laurier University

ClinicalTrials.gov Identifier:

NCT06142942

Other Study ID Numbers:

EMRL-23-01

First Posted:

Nov 22, 2023

Last Update Posted:

Nov 27, 2023

Last Verified:

Nov 1, 2023

Individual Participant Data (IPD) Sharing Statement:

Undecided

Plan to Share IPD:

Undecided

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

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

Keywords provided by Tom Hazell, Principal Investigator, Wilfrid Laurier University

sprint interval training

maximal oxygen consumption

training intervention

Study Results

No Results Posted as of Nov 27, 2023