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Trial registered on ANZCTR

Registration number
Ethics application status
Date submitted
Date registered
Date last updated
Date data sharing statement initially provided
Date results information initially provided
Type of registration
Retrospectively registered

Titles & IDs
Public title
Impact of endurance training conducted under hypoxia conditions on change in exercise tolerance of patients with ischemic heart disease treated with angioplasty or bypass grafting.
Scientific title
Impact of endurance training conducted under hypoxia conditions on change in exercise tolerance of patients with ischemic heart disease treated with angioplasty or bypass grafting.
Secondary ID [1] 298663 0
Universal Trial Number (UTN)
Trial acronym
Linked study record

Health condition
Health condition(s) or problem(s) studied:
coronary artery disease 313167 0
heart failure 313168 0
exercise tolerance 313169 0
Condition category
Condition code
Cardiovascular 311631 311631 0 0
Coronary heart disease

Study type
Description of intervention(s) / exposure
50 patients participated in 24 endurance trainings in normobaric hypoxia conditions. Trainings were conducted every day feom Monday to Friday and lasted about 1 hour (30 minutes for adaptation and 30 minutes of training). Intensity of each session depended on the results of first stress test but never exceeded 85% of HRmax.
Before trainings they had spiroergometric treadmill stress test and blood tests. These same was after training programme.
1. Before trainings each aptient uderwent:
- spiroergometric test (made by physiotherapist or nurse) according to Bruce protocol
- blood tests (morphologycal parameters, lipids, Interleucine alpha, gasometic parameters, electrolytes (made by nurse in analtical laboratory)
- body mass and composition (In body)

After these each patient participated in 24-days trainings programme on cycloergometer in normobaric hypoxia conditions (chamber of normobaric hypoxia).
a) All sessions were supervsored by physiotherapist and paramedic
b) Mode of administration was group of 4 patients trained at the time
c) Intensity was selected individually depending on the results of the treadmill test (at the begining of programme)
d) duration of session- 1 hour (30' of adaptation, 30' of proper training)
e) total duration of intervention- 24 days
f) Strategies used to assess and monitor adherence to the intervention- session attendence checklists
2. Type of workout- endurance workout done on cycloergometer
3. Normobaric hypoxia conditions means that level of oxygen in the air was lower (these same as on 2000m a.s.l., it is about 16% of oxygen) but pressure of the air is these same as normal

After finishing trainings patients had all examinations and tests as in first day (in normoxia condiotions). Results were compared.
Intervention code [1] 314680 0
Intervention code [2] 315351 0
Treatment: Other
Comparator / control treatment
no control group
Control group

Primary outcome [1] 320324 0
exercise tolerance measured by results of spiroergometric treadmil test
Timepoint [1] 320324 0
26 days (24 days of trainings + 2 days of tests)
Primary outcome [2] 320325 0
level of lactate in the blood
Timepoint [2] 320325 0
post-treadmil test (that was made before and after training programme)
Primary outcome [3] 320634 0
duration time of endurance test (measured by stopwatch)
Timepoint [3] 320634 0
after endurance test (before and after training programme)
Secondary outcome [1] 371252 0
changes in blood parameters (morphology, fat acids, electrolytes) as a composite secondary outcome
Timepoint [1] 371252 0
Pre- and post- training programme. Blood was collected twice- before training programe and after finish it.

Key inclusion criteria
ischemic heart disease treated with angioplasty or bypass grafting,
age 35-85 years
participation in rehabilitation programme previously
model A of cardiac rehabilitation (>10MET)
Minimum age
35 Years
Maximum age
85 Years
Both males and females
Can healthy volunteers participate?
Key exclusion criteria
age over 85 years, any other than A model of rehabilitation programme,
other inflamatory diseases, lack of disease history

Study design
Purpose of the study
Allocation to intervention
Non-randomised trial
Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Masking / blinding
Who is / are masked / blinded?

Intervention assignment
Other design features
Not Applicable
Type of endpoint(s)
Statistical methods / analysis

Recruitment status
Date of first participant enrolment
Date of last participant enrolment
Date of last data collection
Sample size
Accrual to date
Recruitment outside Australia
Country [1] 21581 0
State/province [1] 21581 0

Funding & Sponsors
Funding source category [1] 302981 0
Name [1] 302981 0
The Jerzy Kukuczka Academy of Physical Education
Address [1] 302981 0
ul. Mikolowska 72a
40-065 Katowice
Country [1] 302981 0
Primary sponsor type
The Jerzy Kukuczka Academy of Physical Education
ul. Mikolowska 72a
40-065 Katowice
Secondary sponsor category [1] 302936 0
Name [1] 302936 0
Address [1] 302936 0
Country [1] 302936 0

Ethics approval
Ethics application status
Ethics committee name [1] 303531 0
Academic's Bioethic Committee at the Jerzy Kukuczka Academy of Physical Education
Ethics committee address [1] 303531 0
ul. Mikolowska 72a
40-065 Katowice
Ethics committee country [1] 303531 0
Date submitted for ethics approval [1] 303531 0
Approval date [1] 303531 0
Ethics approval number [1] 303531 0

Brief summary
The aim of the study was to use continuous strength training conducted under conditions of artificial normobaric hypoxia, as an innovative method of rehabilitation of patients with coronary artery disease.
Hypothesis: endurance training in the conditions of normobaric hypoxia improves exercise tolerance and haemodynamic parameters of the myocardium in patients with coronary artery disease classified on the basis of the initial stress test.
Trial website
Trial related presentations / publications
Public notes

Principal investigator
Name 93986 0
Dr Agata Nowak
Address 93986 0
Dr Agata Nowak
Jerzy Kukuczka Academy of Physiacl Education,
ul. Mikolowska 72a
40-065 Katowice
Country 93986 0
Phone 93986 0
+48 501773925
Fax 93986 0
Email 93986 0
Contact person for public queries
Name 93987 0
Dr Agata Nowak
Address 93987 0
Dr Agata Nowak
Jerzy Kukuczka Academy of Physiacl Education,
ul. Mikolowska 72a
40-065 Katowice
Country 93987 0
Phone 93987 0
+48 501773925
Fax 93987 0
Email 93987 0
Contact person for scientific queries
Name 93988 0
Dr Agata Nowak
Address 93988 0
Dr Agata Nowak
Jerzy Kukuczka Academy of Physiacl Education,
ul. Mikolowska 72a
40-065 Katowice
Country 93988 0
Phone 93988 0
+48 501773925
Fax 93988 0
Email 93988 0

Data sharing statement
Will individual participant data (IPD) for this trial be available (including data dictionaries)?
What data in particular will be shared?
results of treadmill tests, blood tests. Comparision of tests results before and after training programme
When will data be available (start and end dates)?
start: 1.02.2019 and no end date
Available to whom?
scientific journals, conferences and symposium
Available for what types of analyses?
correlations, statistical analyzes
How or where can data be obtained?
Access subject to approvals by Principal Investigator and medical journals
contact to principal investigator:
What supporting documents are/will be available?
Ethical approval
How or where can supporting documents be obtained?
Type [1] 4039 0
Ethical approval
Citation [1] 4039 0
Link [1] 4039 0
Email [1] 4039 0
Other [1] 4039 0
Summary results
Have study results been published in a peer-reviewed journal?
Other publications
Have study results been made publicly available in another format?
Results – basic reporting
Results – plain English summary