Fatigue resistance index of inspiratory muscles – what is normal in a healthy population?

Not Applicable

• Conditions: Inspiratory muscle endurance in healthy adults; Respiratory - Normal development and function of the respiratory system

• Registration Number: ACTRN12616000105448
• Lead Sponsor: Elizabeth Kilpatrick

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Start: 2016-02-01
• Last Update Posted: 13 January 2020

Recruitment & Eligibility

• Status: ot yet recruiting
• Sex: All
• Target Recruitment: 45

Inclusion Criteria

Healthy adults, with no known respiratory disease, who have not undertaken any form of inspiratory muscle training. Healthy adults who are able to communicate and provide consent to perform testing.

Exclusion Criteria

Participants will be excluded it they already suffer from lung disease (eg Chronic Obstructive Lung Disease, Asthma or Cystic Fibrosis). These pathologies are likely to affect the strength and endurance of inspiratory muscles, and would therefore contaminate the sample of healthy participants.

Participants will also be excluded if they already participate in any form of inspiratory muscle training as this is likely to affect the Maximal Inspiratory Pressure manoeuvre used in the FRI test, and would not represent usual respiratory muscle activity for a healthy person (i.e. they are likely to have supra-normal results).

Participants will be excluded if they cannot communicate sufficiently to provide consent or perform testing.

Study & Design

• Study Type: Observational
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
To quantify inspiratory muscle endurance, through the Fatigue Resistance Index method, in healthy people.<br>[In a one off session. ]

Secondary Outcome Measures

Name	Time	Method
The Borg Rate of Perceived Exertion whilst undertaking the Fatigue Resistance Index[Taken during the one off session; immediately before the first measure of Maximal Inspiratory Pressure, immediately after the completion of the 2 minute breathing challenge and at cessation of testing immediately after the final measure for Maximal Inspiratory Pressure is taken. ]