Heart Rate Variability in Children and Adolescents With Cystic Fibrosis

September 17, 2020 updated by: Margarita Perez, Universidad Europea de Madrid

Effects of a Resistance Training Program on Heart Rate Variability in Children and Adolescents With Cystic Fibrosis

This study aims to assess the effects of a resistance exercise training program on heart rate variability in a group of children and adolescents with cystic fibrosis. The study design is a randomized controlled trial.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

A randomized controlled study will be carried out in children diagnosed with cystic fibrosis aged 6 to 18 years. Individuals will be divided into two groups: control group (CON) and strength training (ST). Heart rate variability will be analyzed using KUBIOS and measured using a Suunto watch, with subjects in lying position without movements or speaking for 5 minutes. Patients in the ST group will complete an individualized guided strength program for 8 weeks (3 sessions of 60 min/week). Training prescription will be individualized and based on the 5 repetition maximum test (60-80%). Upper and lower limbs exercises will be used, including seated bench press, seated lateral row and leg press. Outcome measures will be performed at baseline and after 8 weeks.

Study Type

Interventional

Enrollment (Actual)

19

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

  • Spain
    • Madrid
      • Villaviciosa De Odón, Madrid, Spain, 28670
        • Escuela de Doctorado e Investigacion, Universidad Europea

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

6 years to 18 years (Child, Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Diagnosis of Cystic Fibrosis
  • Age between 6 and 18 years old
  • Mild to moderate lung function levels
  • Signature of the informed consent form by legal guardian and patient.

Exclusion Criteria:

  • Active smoking
  • Exacerbation in the last 3 months
  • Presence of gastrostomy
  • Use of beta-blocker drugs
  • Diagnosed heart disease
  • Alterations in the locomotor system

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: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
No Intervention: Control
This group will receive routine recommendations by the pediatrician, including specific lifestyle advises.
Experimental: Exercise
This group will receive routine recommendations by the pediatrician, including specific lifestyle advises. In addition, a 8-week resistance exercise training program will be performed.
Other: Exercise
Resistance exercise program for 8 weeks, 3 times a week, with a 60 min session duration.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change in the standard deviation of R-R intervals (SDNN) expressed in milliseconds (m/s)
Time Frame: Baseline and 8 weeks
Changes in time-domain SDNN will be measured through heart rate variability assessment using a heart rate band and an Ambit 3 Sport watch. Variables will be collected during a five minute period.
Baseline and 8 weeks
Change in the root mean square standard deviation (RMSSD) expressed in milliseconds (m/s)
Time Frame: Baseline and 8 weeks
Changes in time-domain RMSSD will be measured through heart rate variability assessment using a heart rate band and an Ambit 3 Sport watch. Variables will be collected during a five minute period.
Baseline and 8 weeks
Change in the percentage of differences between R-R intervals higher than 50 m/s (PNN50) expressed in percentage (%)
Time Frame: Baseline and 8 weeks
Changes in time-domain PNN50 will be measured through heart rate variability assessment using a heart rate band and an Ambit 3 Sport watch. Variables will be collected during a five minute period.
Baseline and 8 weeks
Change in the low frequency band (LF) expressed in normalized unites (nu)
Time Frame: Baseline and 8 weeks
Changes in frequency-domain LF will be measured through heart rate variability assessment using a heart rate band and an Ambit 3 Sport watch. Variables will be collected during a five minute period.
Baseline and 8 weeks
Change in the high frequency band (HF) expressed in normalized unites (nu)
Time Frame: Baseline and 8 weeks
Changes in frequency-domain HF will be measured through heart rate variability assessment using a heart rate band and an Ambit 3 Sport watch. Variables will be collected during a five minute period.
Baseline and 8 weeks
Change in the quotient (LF/HF) between the low frequency band (LF) and the high frequency band (HF) expressed as a ratio
Time Frame: Baseline and 8 weeks
Changes in frequency-domain HF will be measured through heart rate variability assessment using a heart rate band and an Ambit 3 Sport watch. Variables will be collected during a five minute period.
Baseline and 8 weeks

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change in the forced expiratory volume in one second (FEV1) expressed as z-score
Time Frame: Baseline and 8 weeks
Changes in FEV1 will be measured using spirometry
Baseline and 8 weeks
Change in the forced vital capacity (FVC) expressed as z-score
Time Frame: Baseline and 8 weeks
Changes in FVC will be measured using spirometry
Baseline and 8 weeks

Collaborators and Investigators

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

Sponsor

Universidad Europea de Madrid

Investigators

  • Principal Investigator: Margarita Perez Ruiz, PhD, Universidad Europea de Madrid

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)

March 5, 2020

Primary Completion (Actual)

September 7, 2020

Study Completion (Actual)

September 7, 2020

Study Registration Dates

First Submitted

February 25, 2020

First Submitted That Met QC Criteria

March 2, 2020

First Posted (Actual)

March 3, 2020

Study Record Updates

Last Update Posted (Actual)

September 18, 2020

Last Update Submitted That Met QC Criteria

September 17, 2020

Last Verified

September 1, 2020

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • UEM50

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

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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