NCT04999410

Brief Summary

High Intensity Interval Training (HIIT) studies are required to determine the optimal training protocol to improve time trial(TT) performance. Data collection for this study will be conducted virtually through the use of a software platform (www.trainerroad.com) by people in their homes on cycle ergometers. Investigators will recruit people who are familiar with cycle exercise training and have their own equipment. By using a virtual platform to collect data, investigators will extend our reach to include a much larger and diverse sample of adult men and women up to age 45 years. In addition, the software platform will allow participants to train from the safety of their home, preventing the risk of exposure to COVID19. OBJECTIVES O1: The primary objective of this study is to determine the influence of interval work-bout duration on TT performance when total mechanical work is matched. O2: The secondary objective of the study is to determine the influence of work-bout duration on TT performance when work is matched by effort. HYPOTHESIS H1: long duration bouts of HIIT will lead to greater improvements in performance compared to short duration bouts due to larger total amount of work completed during the interval sessions. H2: HIIT will lead to equivalent improvements in performance when work is matched by the participant's rating of effort.

Trial Health

43
At Risk

Trial Health Score

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

Trial has exceeded expected completion date
Enrollment
140

participants targeted

Target at P50-P75 for not_applicable

Timeline
Completed

Started Nov 2020

Geographic Reach
1 country

1 active site

Status
unknown

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

November 20, 2020

Completed
9 days until next milestone

First Submitted

Initial submission to the registry

November 29, 2020

Completed
8 months until next milestone

First Posted

Study publicly available on registry

August 10, 2021

Completed
3 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

October 31, 2021

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

October 31, 2021

Completed
Last Updated

August 10, 2021

Status Verified

August 1, 2021

Enrollment Period

12 months

First QC Date

November 29, 2020

Last Update Submit

August 9, 2021

Conditions

Apparently Healthy Adults Cycling Performance

Outcome Measures

Primary Outcomes (1)

  • Time Trial Performance

    Change in Time required to complete a 40 kilometer simulated cycle ride

    1 week before and 1 to 3 days after interventions

Secondary Outcomes (1)

  • Peak Power Output

    Before and 1 to 3 days after interventions

Study Arms (4)

Long-HITT

EXPERIMENTAL

Long work bout durations (4 minutes) on cycle ergometers or home trainers

Behavioral: High Intensity Interval Training

Medium HIIT-L

ACTIVE COMPARATOR

Medium duration work bouts (2 minutes) with intensity matched to the Long-HITT intensity

Behavioral: High Intensity Interval Training

Medium HIIT-H

ACTIVE COMPARATOR

Medium duration work bouts (2 minutes) with intensity at 30% of the difference between Wmax and mean TT power outputs

Behavioral: High Intensity Interval Training

Short HIIT

ACTIVE COMPARATOR

Short duration work bouts (30 seconds) with intensity at 50% of the difference between Wmax and mean TT power outputs

Behavioral: High Intensity Interval Training

Interventions

High Intensity Interval TrainingBEHAVIORAL

Interventions will contrast alternative training protocols

Long-HITTMedium HIIT-HMedium HIIT-LShort HIIT

Eligibility Criteria

Age18 Years - 45 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • between the ages of 18 and 45 years of age
  • cycling for a minimum of 3 times per week for the previous 6-months.

You may not qualify if:

  • an injury in the previous 6-months preventing them from completing their normal training routine
  • presence of pathology including cardiovascular diseases (heart attack, hypertension), neurological conditions (stroke, etc.) or metabolic conditions (diabetes).
  • Participants will be asked to confirm their health status when they complete the intake survey.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Goldring High Performance Sport Centre

Toronto, Ontario, M5S2W6, Canada

RECRUITING

MeSH Terms

Interventions

High-Intensity Interval Training

Intervention Hierarchy (Ancestors)

Physical Conditioning, HumanExerciseMotor ActivityMovementMusculoskeletal Physiological PhenomenaMusculoskeletal and Neural Physiological Phenomena

Central Study Contacts

Scott G Thomas, PhD

CONTACT

6475196957scott.thomas@utoronto.ca

Michael Rosenblat, MSc

CONTACT

778-782-9084m.rosenblat@mail.utoronto.ca

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
CARE PROVIDER, INVESTIGATOR
Masking Details
Employ software to monitor intervention and outcomes. Intervention groups will be coded and the investigators will not be aware of intervention group assignment.
Purpose
OTHER
Intervention Model
PARALLEL
Model Details: Participants will be randomly assigned to one of four training intervention groups. Before to after changes will be contrasted.
Sponsor Type
OTHER
Responsible Party
SPONSOR INVESTIGATOR
PI Title
Professor

Study Record Dates

First Submitted

November 29, 2020

First Posted

August 10, 2021

Study Start

November 20, 2020

Primary Completion

October 31, 2021

Study Completion

October 31, 2021

Last Updated

August 10, 2021

Record last verified: 2021-08

Data Sharing

IPD Sharing
Will not share

Locations

CA(1)