The Effect of Sleep Extension in Teenage Girls at a College Preparatory High School

April 10, 2025 updated by: Louella Amos, Medical College of Wisconsin

If teenagers attain the recommended amount of sleep (9-9.5 hours per night), they will feel less stress and have better athletic and academic performance.

The investigators will track students sleep patterns before and after a sleep intervention where they are given a packet of sleep tips and encouraged to improve their sleep hygiene.

Outcomes include stress levels, academic/athletic performance, and sleep cycle data from the sleep tracking watch.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

A. PURPOSE OF THE STUDY

To determine the effect of sleep extension on stress levels, cognitive function, and fitness in teenage girls.

B. HYPOTHESIS / SPECIFIC AIMS

If teenagers attain the recommended amount of sleep (9-9.5 hours per night), they will feel less stress and have better athletic and academic performance.

Primary Objective:

• The investigators will evaluate stress with a validated questionnaire before and after sleep extension (increased total sleep time per night).

Secondary Objectives:

  • The investigators will evaluate physical fitness and endurance with standardized testing before and after sleep extension.
  • The investigators will measure several sleep variables (total sleep time, sleep efficiency, sleep onset latency, sleep-wake cycle pattern, sleepiness) before and after sleep extension.
  • The investigators will evaluate the association between academic performance (Grade Point Average (GPA) and average total sleep time per night.

Intervention:

Sleep extension: Increasing nightly total sleep time (goal of 9-9.5 hours per night) by improving sleep hygiene, daily exercise, etc.

In a prospective cohort study, up to 40 otherwise healthy teenage girls age 14-18 years at DSHA High School will be approached for consent to participate in the study. Upon consent they will complete the Insomnia Severity Index (ISI), Epworth Sleepiness Scale for Children and Adolescents (ESS-ChAD) and Perceived Stress Scale (PSS) questionnaires and will be issued an actigraphy watch to monitor their sleep-wake cycles daily at home for 2 weeks. They will also keep a sleep diary during the study period.

After the 2 weeks of actigraphy, subjects will have the data from the actigraphy watch downloaded and submit their sleep diary. They will be given sleep hygiene recommendations to try to attain 9-9.5 hours of sleep per night (sleep extension), if not already sleeping this amount. They will then be given a different actigraphy watch to wear and another sleep diary to log their total sleep time for 4 more weeks.

After the 4 weeks, the actigraphy watch will be returned, the actigraphy data will be downloaded and the sleep diary data will be collected. Subjects will complete the ESS-ChAD and PSS upon conclusion of the study. Subjects will be offered a report of their sleep and activity data after completing the sleep extension period. If there is a gap of more than 4 weeks between actigraphy use and the second fitness test, the investigators will ask participants to complete another 1-week sleep diary prior to testing. All study activities except downloading the actigraphy watch data will occur at Divine Savior Holy Angels High School (DSHA).

Study Type

Interventional

Enrollment (Actual)

35

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
    • Wisconsin
      • Milwaukee, Wisconsin, United States, 53222
        • Divine Savior Holy Angels High School

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

14 years to 18 years (Child, Adult)

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

1. Female students age 14-18 yrs (DSHA students ranging from Freshman to Senior year)

Exclusion Criteria:

  1. Subjects and/or parent/guardian unable to read, understand or speak English
  2. Subjects unable to undergo fitness testing
  3. Subjects who are pregnant or become pregnant during the course of the study

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: Diagnostic
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Study group
Behavioral: Sleep Hygiene tips
Students receive a packet of information on how to improve their sleep habits and hygiene.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change in Stress Levels
Time Frame: Week 0 (before actigraphy) and Week 6 (after both actigraphy watch courses)
Perceived Stress Scale (PSS); 10 questions, scores between 0-4; higher score shows higher stress levels
Week 0 (before actigraphy) and Week 6 (after both actigraphy watch courses)

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change in Physical Fitness
Time Frame: 6 months (end of August to end of February)
Standardized PACER (Progressive Aerobic Cardiovascular Endurance Run) testing; administered in the Fall and Spring of each school year; a series of timed runs that get progressively faster; Out of 25 laps, higher score is better with more laps completed
6 months (end of August to end of February)
Sleepiness
Time Frame: 6 weeks, 2 before intervention and 4 after
Difference in sleepiness before and after sleep extension intervention. Measured with the Epworth Sleepiness Scale for Children and Adolescents (ESS-CHAD); scale of 0 to 3; higher score means more likely to fall asleep in a given situation
6 weeks, 2 before intervention and 4 after
Total Sleep Time
Time Frame: 6 weeks, 2 before intervention and 4 after
Difference in total sleep time before and after sleep extension intervention
6 weeks, 2 before intervention and 4 after
Sleep Latency
Time Frame: 6 weeks, 2 before intervention and 4 after
Difference in sleep latency before and after sleep extension intervention
6 weeks, 2 before intervention and 4 after
Academic performance
Time Frame: First semester 4 months (August 19th, 2019 - December 20th, 2019)
Grade point average (GPA); 0.0-4.0 scale, higher is better
First semester 4 months (August 19th, 2019 - December 20th, 2019)

Collaborators and Investigators

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

Sponsor

Medical College of Wisconsin

Collaborators

Children's Hospital and Health System Foundation, Wisconsin
Divine Savior Holy Angels High School

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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)

April 13, 2018

Primary Completion (Actual)

August 1, 2022

Study Completion (Actual)

August 1, 2022

Study Registration Dates

First Submitted

January 1, 2020

First Submitted That Met QC Criteria

February 25, 2020

First Posted (Actual)

February 26, 2020

Study Record Updates

Last Update Posted (Actual)

April 13, 2025

Last Update Submitted That Met QC Criteria

April 10, 2025

Last Verified

December 1, 2021

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • 1176849

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

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.

Clinical Trials on Sleep

Clinical Trials on Sleep Hygiene tips

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in Philippines

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

Subscribe