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

NCT03729986 | Completed

• 1 other identifier: 201807021RINA
• Study Type: observational
• Target: 14
• Locations: 1 country
• Sites: 1

Brief 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.

Conditions

Accessory Muscle

Outcome Measures

Primary Outcomes (2)

• 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

• 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

Study Arms (1)

Healthy adults

Healthy subjects without exercise habit that can cooperate with the measurements of this study, loaded inspiratory muscle test.

Other: Loaded inspiratory muscle test

Interventions

Loaded inspiratory muscle test OTHER

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.

Healthy adults

Eligibility Criteria

• Age: 20 Years+
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Probability Sample

Study Population

Healthy adults that are willing to cooperate the measurement of this study.

You may qualify if:

• age \> 20 years old
• without exercise habit (any exercise that less than 3 days/week)
• can cooperate with the measurements of this study

You may not qualify if:

• 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

Sponsors & Collaborators

• National Taiwan University Hospital: lead

Study Sites (1)

School and Graduate Institute of Physical Therapy of National Taiwan University

Taipei, Zhongzheng Dist, 100, Taiwan

Location

Study Officials

• Li-Ying Wang, Phd

  National Taiwan University

  STUDY CHAIR

Study Design

• Study Type: observational
• Observational Model: OTHER
• Time Perspective: CROSS SECTIONAL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: November 1, 2018
• First Posted: November 5, 2018
• Study Start: November 1, 2018
• Primary Completion: December 28, 2018
• Study Completion: December 28, 2018
• Last Updated: February 12, 2019

Record last verified: 2018-11

Locations

TW (1)