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CompletedNCT04018495Updated Feb 3, 2025Results posted

STeP IT UP CF: STimulating ImProved Health And Well-being In CysTic Fibrosis

An observational study in Cystic Fibrosis, sponsored by Medical College of Wisconsin. Completed at 1 site in United States. Open to participants aged 18 Years to 100 Years. Per ClinicalTrials.gov, last updated 2025-02-03.

Sponsored by Medical College of Wisconsin · Observational

Study type
Observational
Model
Case-only
Time perspective
Prospective
Enrollment
21
Ages
18 Years to 100 Years
Sex
All
01

Study summary

STeP IT UP CF: STimulating ImProved Health And Well-being In CysTic Fibrosis Using Integration Of Fitness Technology and Port CF. A pilot in integration of wearable fitness tracker data with existing health data provided by CF foundation Patient Registry (Port CF)

Read the detailed description

Cystic fibrosis patients who are willing to use an activity tracker for 3 months are invited to participate. Analysis of activity patterns and sleep patterns will be analyzed and compared to their lung function and general health as part of the routine CF center care visits during the study period.

02

Conditions studied

  • Cystic Fibrosis
03

In context

Cystic Fibrosis

1,581 studies on the registry are indexed under Cystic Fibrosis; 190 are open to participants now.

This study's enrollment of 21 is below the median of 85 across 482 observational studies indexed under Cystic Fibrosis.

Browse Cystic Fibrosis studies →

Lead sponsor

Medical College of Wisconsin is the lead sponsor of 540 studies on the registry; 120 are open to participants now.

Of its 71 completed or terminated interventional studies of FDA-regulated products, 56 (79%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 100 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Cystic fibrosis patients seen at an academic adult CF center.

Inclusion criteria

  • Adults with Cystic Fibrosis
  • Age >18, Cystic Fibrosis

Exclusion criteria

Exclusion Criteria:

  • A potential subject who meets any of the following exclusion criteria is ineligible to participate in the study.
  • Those unable to commit to at least 3 months follow up for CF care from enrollment at study CF center. Inability to speak and understand English.
  • Those patients without dedicated access to a smartphone, tablet, or computer with internet for syncing device and completing patient diary.
  • Those patients unwilling to sign an informed consent form.
05

Study design

Observational model
Case-only
Time perspective
Prospective
Enrollment
21 participants (actual)
Patient registry
No

Groups and cohorts

  • CF patients using Fitbit for 3 months

    CF patients at time of enrollment who are willing to use a fitbit tracker to measure activity and sleep during the observational period of 3 months.

06

What researchers measure

Primary outcomes

  1. Activity Tracker Utilization- Total Days of Use

    Descriptive statistics, such as mean for the number of days of use over the three month period

    Time frame: 3 months

  2. Activity Tracker Utilization - Minutes of Sleep Per Night

    Descriptive statistics, such as mean for the number of minutes per sleep per night

    Time frame: 3 months

  3. Activity Tracker Utilization - Steps Per Day

    Descriptive statistics, such as mean, for the number of steps per day

    Time frame: 3 months

Secondary outcomes

  1. Integration of Cystic Fibrosis Registry Lung Function Data - Average GLI FEV1 From First to Last Day of Fitbit Wear

    Analyze the data trends. Forced Expiratory Volume (FEV1) reported will be used for small group analysis to compare trends with lung function mean from first to last day of wear.

    Time frame: 3 months

07

Results

Posted Feb 3, 2025

Participant flow

Participant flow — Overall Study
MilestoneCF Patients Using Fitbit for 3 Months
Started21
Completed20
Not completed1
Withdrew: Physician decision1

Outcome measures

PrimaryActivity Tracker Utilization- Total Days of Use

Descriptive statistics, such as mean for the number of days of use over the three month period

Time frame:
3 months
Reported as:
Mean · Total days used
Activity Tracker Utilization- Total Days of Use
Total days usedCF Patients Using Fitbit for 3 Months
Activity Tracker Utilization- Total Days of Use85.380 (27 to 93)
PrimaryActivity Tracker Utilization - Minutes of Sleep Per Night

Descriptive statistics, such as mean for the number of minutes per sleep per night

Time frame:
3 months
Reported as:
Mean · minutes of sleep per night
Activity Tracker Utilization - Minutes of Sleep Per Night
minutes of sleep per nightCF Patients Using Fitbit for 3 Months
Activity Tracker Utilization - Minutes of Sleep Per Night381.28 (0 to 983)
PrimaryActivity Tracker Utilization - Steps Per Day

Descriptive statistics, such as mean, for the number of steps per day

Time frame:
3 months
Reported as:
Mean · steps/day
Activity Tracker Utilization - Steps Per Day
steps/dayCF Patients Using Fitbit for 3 Months
Activity Tracker Utilization - Steps Per Day7262.49 (0 to 30010)
SecondaryIntegration of Cystic Fibrosis Registry Lung Function Data - Average GLI FEV1 From First to Last Day of Fitbit Wear

Analyze the data trends. Forced Expiratory Volume (FEV1) reported will be used for small group analysis to compare trends with lung function mean from first to last day of wear.

Time frame:
3 months
Reported as:
Mean · Percentage of Predicted FEV1
Integration of Cystic Fibrosis Registry Lung Function Data - Average GLI FEV1 From First to Last Day of Fitbit Wear
Percentage of Predicted FEV1CF Patients Using Fitbit for 3 Months
Integration of Cystic Fibrosis Registry Lung Function Data - Average GLI FEV1 From First to Last Day of Fitbit Wear66.535 (30.42 to 117.69)

Adverse events

Collected over 3 months. Non-serious events are listed at a 1% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Interventional - Fitbit Tracker0/20 (0%)0/20 (0%)0/20 (0%)

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)CF Patients Using Fitbit for 3 Months
<=18 years0
Between 18 and 65 years20
>=65 years0
Age, Continuous
Age, Continuous(years)CF Patients Using Fitbit for 3 Months
Mean33 ± 8
Sex: Female, Male
Sex: Female, Male(Participants)CF Patients Using Fitbit for 3 Months
Female13
Male7
Race (NIH/OMB)
Race (NIH/OMB)(Participants)CF Patients Using Fitbit for 3 Months
American Indian or Alaska Native0
Asian0
Native Hawaiian or Other Pacific Islander0
Black or African American0
White20
More than one race0
Unknown or Not Reported0
Region of Enrollment
Region of Enrollment(participants)CF Patients Using Fitbit for 3 Months
United States20
08

Study locations

1 site
  • Medical College of Wisconsin/Froedtert Hospital
    Milwaukee, Wisconsin 53202, United States
09

References and documents

Publications

  • Amin R, Bean J, Burklow K, Jeffries J. The relationship between sleep disturbance and pulmonary function in stable pediatric cystic fibrosis patients. Chest. 2005 Sep;128(3):1357-63. doi: 10.1378/chest.128.3.1357. PubMed 16162729 ↗
  • Beattie Z, Oyang Y, Statan A, Ghoreyshi A, Pantelopoulos A, Russell A, Heneghan C. Estimation of sleep stages in a healthy adult population from optical plethysmography and accelerometer signals. Physiol Meas. 2017 Oct 31;38(11):1968-1979. doi: 10.1088/1361-6579/aa9047. PubMed 29087960 ↗
  • Dancey DR, Tullis ED, Heslegrave R, Thornley K, Hanly PJ. Sleep quality and daytime function in adults with cystic fibrosis and severe lung disease. Eur Respir J. 2002 Mar;19(3):504-10. doi: 10.1183/09031936.02.00088702. PubMed 11936530 ↗
  • de Zambotti M, Baker FC, Colrain IM. Validation of Sleep-Tracking Technology Compared with Polysomnography in Adolescents. Sleep. 2015 Sep 1;38(9):1461-8. doi: 10.5665/sleep.4990. PubMed 26158896 ↗
  • Gonzalez-Ortiz M, Martinez-Abundis E, Balcazar-Munoz BR, Pascoe-Gonzalez S. Effect of sleep deprivation on insulin sensitivity and cortisol concentration in healthy subjects. Diabetes Nutr Metab. 2000 Apr;13(2):80-3. PubMed 10898125 ↗

Study documents

  • Protocol and statistical analysis plan · Mar 28, 2020
  • Informed consent form · Mar 28, 2020

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: No

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 3, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT04018495
Lead sponsor
Medical College of Wisconsin
Collaborators
Cystic Fibrosis Foundation
Responsible party
Rose Franco (Associate Professor, Medical College of Wisconsin) — Principal investigator
First posted
Jul 12, 2019
Start date
Sep 10, 2019
Primary completion
Aug 24, 2022
Completion
Aug 24, 2022
Results posted
Feb 3, 2025
Last update
Feb 3, 2025

Study contacts

Rose Franco, MD
principal investigator · Medical College of Wisconsin

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jan 2025. You cannot join it, but the record below documents what was studied.

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