Trial Review

The ANZCTR website is back online for trial registration and updates. We apologise for any inconvenience caused while the site was inactive.


With activity expected to increase on the ANZCTR again, there may be extended wait times while we process pending studies, with priority being given to those trials submitted in February. Thank you for your patience.


Reset your password and enable multi-factor authentication (MFA)


For ANZCTR account holders: to help ensure the cyber safety of your account, you’ll need to reset your password and set-up multi-factor authentication (MFA) as per the instructions below.


  1. Go to the Login page, click ‘reset password’ and follow the instructions.
  2. Check your email for the link to set a new password.
  3. Create a new password that meets requirements.
  4. Return to the Login page and enter your new password. A verification code will be sent to your email.
  5. Check your email for the code and enter it on the Login page. If the code is entered incorrectly, you can re-enter the correct one or request a new one.

Learn more about MFA and its importance on the Australian Signals Directorate website.

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been endorsed by the ANZCTR. Before participating in a study, talk to your health care provider and refer to this information for consumers
Trial registered on ANZCTR


Registration number
ACTRN12610000226000
Ethics application status
Approved
Date submitted
15/03/2010
Date registered
18/03/2010
Date last updated
18/03/2010
Type of registration
Prospectively registered

Titles & IDs
Public title
Pulmonary physiology in obesity
Scientific title
Physiological mechanisms behind the association between asthma and obesity - an observational study measuring airway closure
Secondary ID [1] 1506 0
None
Universal Trial Number (UTN)
Trial acronym
Linked study record

Health condition
Health condition(s) or problem(s) studied:
Asthma 256972 0
Condition category
Condition code
Respiratory 257116 257116 0 0
Asthma
Diet and Nutrition 257139 257139 0 0
Obesity

Intervention/exposure
Study type
Observational
Patient registry
Target follow-up duration
Target follow-up type
Description of intervention(s) / exposure
Airway closure as measured by Single Photon Emission Computed Tomography (SPECT) and Computed Tomography (CT) scans scans and closing capacity will be measured. The other tests which will be measured are ventilation heterogeneity and lung volumes.
Patients will be seen for two visits, two days apart and recruitment will take place over the next three years.
Intervention code [1] 256149 0
Not applicable
Comparator / control treatment
No control.
Control group
Uncontrolled

Outcomes
Primary outcome [1] 258011 0
Airway closure - measured by SPECT/CT scans and single breath nitrogen washout tests.
Timepoint [1] 258011 0
measured once only following clinical assessment for all participants
Secondary outcome [1] 263575 0
Nil
Timepoint [1] 263575 0
Nil

Eligibility
Key inclusion criteria
Obesity, body mass index (BMI) > 30 kg/m2
Asthmatics with doctor diagnosed asthma
Minimum age
18 Years
Maximum age
80 Years
Sex
Both males and females
Can healthy volunteers participate?
No
Key exclusion criteria
history of cardiac or respiratory disease,(other than asthma) current (within the last 6 months) or previous smoking >10 pack years

Study design
Purpose
Natural history
Duration
Cross-sectional
Selection
Defined population
Timing
Prospective
Statistical methods / analysis

Recruitment
Recruitment status
Not yet recruiting
Date of first participant enrolment
Anticipated
1/04/2010
Actual
Date of last participant enrolment
Anticipated
Actual
Date of last data collection
Anticipated
Actual
Sample size
Target
105
Accrual to date
Final
Recruitment in Australia
Recruitment state(s)

Funding & Sponsors
Funding source category [1] 256654 0
Charities/Societies/Foundations
Name [1] 256654 0
Woolcock Institute of Medical Research
Country [1] 256654 0
Australia
Primary sponsor type
Charities/Societies/Foundations
Name
Woolcock Institute of Medical Research
Address
Po Box M77
Missenden Road PO
Camperdown
NSW 2050
Country
Australia
Secondary sponsor category [1] 255942 0
Hospital
Name [1] 255942 0
Department of Respiratory Medicine
Address [1] 255942 0
Level 8, Royal North Shore Hospital, Pacific Hwy, St Leonards, NSW, 2065
Country [1] 255942 0
Australia

Ethics approval
Ethics application status
Approved
Ethics committee name [1] 258676 0
Northern Sydney Health Human Research Ethics Committee (Hawkesbury)
Ethics committee address [1] 258676 0
Ethics committee country [1] 258676 0
Australia
Date submitted for ethics approval [1] 258676 0
28/10/2009
Approval date [1] 258676 0
Ethics approval number [1] 258676 0
0912-345M

Summary
Brief summary
Trial website
Trial related presentations / publications
Public notes

Contacts
Principal investigator
Name 30939 0
Address 30939 0
Country 30939 0
Phone 30939 0
Fax 30939 0
Email 30939 0
Contact person for public queries
Name 14186 0
Dr Greg King
Address 14186 0
PO Box M77, Missenden Road PO, Camperdown NSW, 2050
Country 14186 0
Australia
Phone 14186 0
+61 2 9926 6265
Fax 14186 0
+61 2 9114 0014
Email 14186 0
[email protected]
Contact person for scientific queries
Name 5114 0
Dr Greg King
Address 5114 0
PO Box M77, Missenden Road PO, Camperdown NSW, 2050
Country 5114 0
Australia
Phone 5114 0
+61 2 9926 6265
Fax 5114 0
+61 2 9114 0014
Email 5114 0
[email protected]

No information has been provided regarding IPD availability


What supporting documents are/will be available?

No Supporting Document Provided



Results publications and other study-related documents

Documents added manually
No documents have been uploaded by study researchers.

Documents added automatically
No additional documents have been identified.