Transmeridian Travel in Elite Female Athletes

August 18, 2025 updated by: Michael J. Ormsbee, Florida State University
The study will investigate whether maintaining a home-based time zone schedule will attenuate any decrements to sleep and performance experienced following transmeridian travel in elite female athletes.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

21

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Florida
      • Tallahassee, Florida, United States, 32304
        • Institute of Sports Sciences & Medicine

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • Athlete on the roster of an NCAA Division 1 Team
  • Has worn WHOOP device for at least 3 months

Exclusion Criteria:

  • Musculoskeletal injury or cardiometabolic disease limiting participation in regular team activities
  • Pre-diagnosed sleep condition that would negatively affect sleep quantity or quality

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Non-Randomized
  • Interventional Model: Crossover Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
No Intervention: Home
Participants will perform the protocol during a home series
No Intervention: Away (No Time Zone Change)
Participants will perform the protocol during a road series in the same time zone as home.
No Intervention: Away (3 h Time Zone Change, Adopt Away Schedule)
Participants will perform the protocol during a road series across three time zones. The team will adopt the schedule of the new time zone.
Experimental: Away (3 h Time Zone Change, Maintain Home Schedule)
Participants will perform the protocol during a road series across three time zones. The team will maintain the schedule of their home time zone.
Behavioral: Maintain home-based schedule
The team will maintain their home-based time zone schedule despite being in a location that is three time zones away

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Sleep Quantity
Time Frame: Daily for 5 days
Sleep duration will be assessed via wrist-worn WHOOP bands.
Daily for 5 days
Sleep Quality
Time Frame: Daily for 5 days
Sleep efficiency will be assessed via wrist-worn WHOOP bands.
Daily for 5 days
Resting Heart Rate (RHR)
Time Frame: Daily for 5 days
RHR will be assessed in the morning via wrist-worn WHOOP bands.
Daily for 5 days
Heart Rate Variability (HRV)
Time Frame: Daily for 5 days
HRV will be assessed in the morning via wrist-worn WHOOP bands.
Daily for 5 days
Muscular Power
Time Frame: Daily for 3 days
Muscular power is assessed via countermovement jump (CMJ) testing on force plates
Daily for 3 days
Muscular Strength
Time Frame: Daily for 3 days
Muscular strength is assessed via handgrip dynamometry.
Daily for 3 days

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Reaction Time
Time Frame: Daily for 5 days
Assessed in the morning via a mobile application
Daily for 5 days
Subjective Sleep Quality
Time Frame: Daily for 5 days
Assessed in the morning via questionnaire (0-100)
Daily for 5 days
Subjective Recovery
Time Frame: Daily for 5 days
Assessed in the morning via questionnaire (0-100)
Daily for 5 days

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Florida State University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

February 15, 2025

Primary Completion (Actual)

May 1, 2025

Study Completion (Actual)

May 1, 2025

Study Registration Dates

First Submitted

March 20, 2025

First Submitted That Met QC Criteria

April 2, 2025

First Posted (Actual)

April 9, 2025

Study Record Updates

Last Update Posted (Actual)

August 22, 2025

Last Update Submitted That Met QC Criteria

August 18, 2025

Last Verified

August 1, 2025

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • STUDY00005528

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

IPD Plan Description

Some of the individual data collected on the athletes is confidential to the research team and the team(s) participating in the study.

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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