Respiratory Muscle Strength and Function in Healthy Kids

September 12, 2018 updated by: University of Florida

Respiratory Muscle Strength and Function in Healthy Children

Respiratory muscle strength training (RMST) is a potential treatment option that has been shown to increase strength and ventilatory function in critically ill patients, patients on ventilators and patients with mild neuromuscular weakness. Currently researchers are examining the role of inspiratory muscle strength training (IMST) in pressure performance of ventilator dependent children with Pompe disease. However, normal pressure-flow-timing responses of lung function are not well-characterized in healthy children. The purpose of this study is to measure RMST-induced changes in respiratory function in healthy children. Children will undergo one session of lung function and strength testing. By studying healthy children's respiratory function, this study will also help to develop more efficient respiratory muscle training exercise prescriptions for children with neuromuscular weakness and impaired respiratory function.

Study Overview

Status

Completed

Conditions

Detailed Description

The goals of this study are to collect and evaluate respiratory muscle strength training (RMST) induced changes in ventilatory function in healthy children. Children will undergo one session of pulmonary function and strength testing to quantify rate of inspiratory and expiratory pressure development and to determine whether inspiratory and expiratory pressure correlate to maximal respiratory pressures and forced pulmonary function tests. Currently normal pressure-flow-timing responses are not well-characterized in healthy children. The purpose of this study is to help develop more efficient RMST exercise prescriptions for ill children on ventilators and with neuromuscular weakness.

Participants in the study will refrain from caffeine products and exercise on the day of respiratory testing. In conjunction with respiratory testing, baseline and exertional blood pressure, heart and respiratory rate, and pulse oximetry will be monitored. Participants will complete tidal flow-volume assessments and forced expiratory maneuvers according to the AMerican Thoracic Society guidelines. Participants will undergo 5 sets of 10 maximal-effort breaths against standardized resistances (one set each at 0, 5, 10, 15, and 20 cm H20). Following each set, subjects will rate the load magnitude and their feelings of breathing discomfort using a 0-10 visual analog scale. Participants will also perform maximal inspiratory and expiratory pressure maneuvers. All tests will be separated by at least 2-3 minutes of rest.

Study Type

Observational

Enrollment (Actual)

7

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
      • Gainesville, Florida, United States, 32610
        • University of Florida

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

4 years to 16 years (Child)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

Healthy Children

Description

Inclusion Criteria:

  • Male or female subjects 4-16 years of age.
  • Healthy subjects

Exclusion Criteria:

  • Have primary pulmonary disease
  • Have primary neuromuscular disease
  • Have a connective tissue or autoimmune disease
  • Have had a respiratory infection with in 15 days prior to study date
  • Have acute aminoglycosides antibiotic therapy with in 15 days prior to study date
  • Have acute corticosteroids with in 15 days prior to study date
  • Have a need to use an inhaler routinely
  • Have hepatic failure
  • Have hematologic failure
  • Have participated in other studies related to medications or exercise
  • Have used tobacco products
  • Have other precautions

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

Cohorts and Interventions

Group / Cohort
Respiratory Function
Children will undergo one session of pulmonary function and strength testing

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Pulmonary Function Testing
Time Frame: Day 1
Subjects will complete tidal flow-volume assessments and forced expiratory maneuvers.
Day 1

Collaborators and Investigators

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

Sponsor

University of Florida

Investigators

  • Principal Investigator: Barbara K Smith, PT, PhD, University of Florida

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

April 1, 2011

Primary Completion (Actual)

August 1, 2014

Study Completion (Actual)

September 1, 2014

Study Registration Dates

First Submitted

September 16, 2011

First Submitted That Met QC Criteria

September 16, 2011

First Posted (Estimate)

September 19, 2011

Study Record Updates

Last Update Posted (Actual)

September 13, 2018

Last Update Submitted That Met QC Criteria

September 12, 2018

Last Verified

September 1, 2018

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • HK 176-2011

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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