Ignite Creation Date:
2024-05-06 @ 8:20 PM
Last Modification Date:
2024-10-26 @ 3:25 PM
Study NCT ID:
NCT06347549
Status:
RECRUITING
Last Update Posted:
2024-05-30
First Post:
2024-03-28
Brief Title:
The Impact of Diaphragmatic Breathing Instructions and Inspiratory Pressures on Diaphragm Contraction in Healthy Adults
Sponsor:
Hong Kong Metropolitan University
Organization:
Hong Kong Metropolitan University
Study Overview
Official Title:
Diaphragmatic and Sternocleidomastoid Muscle Recruitment at Various Inspiratory Loads With and Without Breathing Instruction in Healthy Adults
Status:
RECRUITING
Status Verified Date:
2024-08
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief Summary:
This is a cross-sectional obsessional study
This study aims 1 to investigate the relationship between sternocleidomastoid muscle recruitment and diaphragm thickness fraction during increasing inspiratory resistance in healthy adults 2 to compare diaphragmatic and sternocleidomastoid muscle recruitment patterns with and without a standard diaphragmatic breathing instruction with increasing inspiratory resistance in healthy adults
Participants will be asked to breathe through a pressure threshold inspiratory loading device under different inspiratory resistances with and without a standard diaphragmatic breathing instruction sternocleidomastoid muscle activity will be measured with surface electromyography and diaphragm thickness will be assessed with ultrasonography
This study aims 1 to investigate the relationship between sternocleidomastoid muscle recruitment and diaphragm thickness fraction during increasing inspiratory resistance in healthy adults 2 to compare diaphragmatic and sternocleidomastoid muscle recruitment patterns with and without a standard diaphragmatic breathing instruction with increasing inspiratory resistance in healthy adults
Participants will be asked to breathe through a pressure threshold inspiratory loading device under different inspiratory resistances with and without a standard diaphragmatic breathing instruction sternocleidomastoid muscle activity will be measured with surface electromyography and diaphragm thickness will be assessed with ultrasonography
Detailed Description:
Upon arrival at the laboratory eligible participants will first perform a standard spirometry lung function test The maximum inspiratory pressure MIP will be determined with a pressure threshold inspiratory loading device POWERbreathe K2 Each participant will then be instructed to use the device to perform in random order 10 breaths at an inspiratory intensity of 30 40 50 60 70 and 80 MIP A rest period of 15 minutes will be allowed between each inspiratory pressure set of 10 breaths Simultaneous surface electromyographic sEMG recording of the right sternocleidomastoid muscle and ultrasound of right diaphragmatic thickness will be conducted during each breath
The entire recording procedure will be repeated on a separate day During the repeat measurements participants will be provided with specific breathing instruction to focus on the use of the diaphragm and to inhale air to the lower part of the chest Practice trials will be conducted to ensure participants understanding of diaphragmatic breathing
The entire recording procedure will be repeated on a separate day During the repeat measurements participants will be provided with specific breathing instruction to focus on the use of the diaphragm and to inhale air to the lower part of the chest Practice trials will be conducted to ensure participants understanding of diaphragmatic breathing
Study Oversight
Has Oversight DMC:
None
Is a FDA Regulated Drug?:
False
Is a FDA Regulated Device?:
False
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?:
None