Physiological Responses to Maximal 4-s Sprint Interval Cycling

NCT ID: NCT04448925

Last Updated: 2020-06-26

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

16 participants

Study Classification

INTERVENTIONAL

Study Start Date

2019-01-10

Study Completion Date

2020-06-20

Brief Summary

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The optimal recovery duration depends on the intensity of exercise and in the present study the intensity was maximal power for 4-s while cycling an 'Inertial Load' ergometer (ILE). Recovery duration of 15, 30 and 45-s were given between 30 successive sprints.

Detailed Description

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All subjects completed an informed consent for this study that was approved by the Institutional Review Board of the University of Texas at Austin.

Study Overview. A randomized, cross-over experimental design was conducted. Each participant visited the laboratory on four occasions which were separated by two to five days. Measurement of body mass, familiarization with experimental procedures and cycling peak oxygen consumption test (VO2peak) were performed on the first visit. Participants took part in inertial-load exercise (ILE) on the remaining test days. On each separate session, a different inter-sprint recovery duration was employed (i.e. 15, 30 or 45-s). Cycling power output, pulmonary gas exchange, vastus lateralis de-oxygenation status, heart rate and blood lactate were measured.

Conditions

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Exercise, Cardiovascular Function, Fatigue, Muscular Power

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Repeated measures, cross-over
Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Study Groups

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Recovery duration 15 seconds

Resting for 15 sec

Group Type EXPERIMENTAL

inertial-load exercise (ILE)

Intervention Type OTHER

Length of time between exercise bouts

Recovery duration 30 seconds

Resting for 30 sec

Group Type EXPERIMENTAL

inertial-load exercise (ILE)

Intervention Type OTHER

Length of time between exercise bouts

Recovery duration 45 seconds

Resting for 45 sec

Group Type EXPERIMENTAL

inertial-load exercise (ILE)

Intervention Type OTHER

Length of time between exercise bouts

Interventions

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inertial-load exercise (ILE)

Length of time between exercise bouts

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* healthy participants

Exclusion Criteria

* unhealthy
Minimum Eligible Age

18 Years

Maximum Eligible Age

40 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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University of Texas at Austin

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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University of Texas at Austin Human Performance Laboratory

Austin, Texas, United States

Site Status

Countries

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United States

References

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Vardarli E, Satiroglu R, Allen JR, Bjellquist-Ledger R, Burton HM, Coyle EF. Physiological responses to maximal 4 s sprint interval cycling using inertial loading: the influence of inter-sprint recovery duration. Eur J Appl Physiol. 2021 Aug;121(8):2295-2304. doi: 10.1007/s00421-021-04677-6. Epub 2021 May 11.

Reference Type DERIVED
PMID: 33974126 (View on PubMed)

Other Identifiers

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UTexasAustinHPL

Identifier Type: -

Identifier Source: org_study_id

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