Activation Patterns of Respiratory Muscles to Loaded Inspiratory Muscle Tests in Healthy Adults Under Different Posture

Accessory Muscle Clinical Trial

Official title:

Activation Patterns of Respiratory Muscles to Loaded Inspiratory Muscle Tests in Healthy Adults Under Different Posture

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT03729986
• Other study ID #: 201807021RINA
• Status: Completed
• Start date: November 1, 2018
• Est. completion date: December 28, 2018

Study information

• Verified date: November 2018
• Source: National Taiwan University Hospital
• Contact: n/a
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

Whether minimizing sternocleidomastoid (SCM) activation in supine position would increase diaphragm activation during loaded inspiratory muscle tests remains to be determined. Therefore, the purpose is to exam diaphragm and SCM activation during loaded inspiratory muscle tests in sitting and supine position in healthy adults.

Description:

Inspiratory muscle training usually performed in the upright sitting position. In healthy individuals, sternocleidomastoid (SCM) is rarely recruited during tidal breathing, but previous studies have demonstrated SCM activation during loaded inspiratory muscle tests in upright sitting position. Whether minimizing SCM activation in supine position would increase diaphragm activation during loaded inspiratory muscle tests remains to be determined. Therefore, the purpose is to exam diaphragm and SCM activation during loaded inspiratory muscle tests in sitting and supine position in healthy adults.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 14
• Est. completion date: December 28, 2018
• Est. primary completion date: December 28, 2018
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 20 Years and older

Eligibility

Inclusion Criteria:

• age > 20 years old

• without exercise habit (any exercise that less than 3 days/week)

• can cooperate with the measurements of this study

Exclusion Criteria:

• any clinical diagnosis that will influence the measurement, including any history of neuromyopathy

• angina, acute myocardial infarction in the previous one month

• pregnancy

• participated in inspiratory muscle training program in the previous three months

• any psychiatric or cognitive disorders, for example: Mini-Mental State Examination (MMSE) < 24, that will disturb the communication and cooperation of the study

Related Conditions & MeSH terms

• Accessory Muscle

Intervention

Other:
• Loaded inspiratory muscle test
Loaded inspiratory muscle tests will be set at 30% of maximal inspiratory pressure in sitting and supine positions. The orders of the two loaded test conditions will be conducted in random order with at least 20 minute separation. This is an observational study. Subjects will perform only 15 breaths with each loaded test condition to exam the performance of their inspiratory muscles. Loaded inspiratory muscle test is not for training.

Locations

Country	Name	City	State
Taiwan	School and Graduate Institute of Physical Therapy of National Taiwan University	Taipei	Zhongzheng Dist

Sponsors (1)

Lead Sponsor	Collaborator
National Taiwan University Hospital

Country where clinical trial is conducted

Taiwan, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Diaphragm and Sternocleidomastoid muscle activation	Root mean square values during different conditions	Through the completion of the loaded inspiratory muscle test condition; it would take about 3 minutes
Primary	The mean median frequency of diaphragm and sternocleidomastoid muscle	The power spectrum is divided into two equal areas of the frequency value by median frequency to exam muscle fatigability	In one minute after the completion of the loaded inspiratory muscle test condition