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The effects of intermittent hypoxic training on physiological variables in cardiovascular risk persons

The effects of intermittent hypoxic training on physiological variables in cardiovascular risk persons

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
TCTR
Registry ID
TCTR20200605007
Enrollment
45
Registered
2020-06-05
Start date
2020-06-06
Completion date
Unknown
Last updated
2026-03-30

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Hypertension stage 1&#44

Interventions

IHT group was performed aerobic exercise training under hypoxic conditions: 48 min/day (5&#45
48 min walking on a treadmill&#44
min cooldown)&#44
two days/week for six consecutive weeks.,No exposure or train.,IHE group was performed breathing through the hypoxicator&#44
two times a week at rest in sitting position: 48 min/day&#44
two days/week&#44
for six consecutive weeks.
Experimental Other,No Intervention Other,Experimental Other
Intermittent hypoxic training (IHT) group,Control group,Intermittent hypoxic exposure (IHE) group

Sponsors

Research Affairs, Faculty of Medicine, Khon Kaen University
Lead Sponsor

Eligibility

Sex/Gender
All
Age
30 Years to 59 Years

Inclusion criteria

Inclusion criteria: 1. Patients age between 30 to 59 years old; 2. Patients with stage I hypertension (a blood pressure of 140-159/90-99 mm Hg and of unknown cause) diagnosed by medical specialists according to the JNC8 guidelines in spited of concurrent use of antihypertensive agents; 3. Patients with LDL-C ≥ 130 mg/dL according to NCEP ATP III (2001); 4. Patients have body mass index ≥ 23 kg/m2 in overweight, ≥ 25 kg/m2 in obese according to Asia-Pacific guideline (2008); 5. Patients had to be under optimal medication treatment for at least six months; 6. Patients had to be clinically stable (i.e. no crises or changes in medication) for at least three months

Exclusion criteria

Exclusion criteria: 1. Patients have a serious respiratory disorder (e.g. asthma, COPD); 2. Patients have a history of cardiovascular diseases (e.g. acute myocardial infarction, and/or unstable angina), history of heart failure and stroke; 3. Patients presenting with history of neuromuscular and musculoskeletal diseases for more than one month; 4. Patients have chronic kidney disease (stage I or more); 5. Patients have type II diabetes mellitus; 6. Patients presenting with endocrine disorders (e.g. hyperthyroidism, hypothyroidism); 7. Woman in pregnancy and lactation; 8. Patients had to be continuous exposure for more than one week to altitudes above 1,000 m during the three months preceding inclusion in the study; 9. Patients who participate in the weight loss program or use of weight loss drugs; 10. Patients with psychology signs and symptoms (e.g. anxiety, depression)

Design outcomes

Primary

MeasureTime frame
Body composition 3 times (pre-test, post-test 1, post-test 2) Body composition measured by bioelectrical impedance analysis machine (ioi model 353),Blood pressure 3 times (pre-test, post-test 1, post-test 2) blood pressure was measured by autonomic blood pressure mornitor., lipid profile 2 times (pre-test, post-test 1) 3 mL of venous blood samples from an antecubital vein was collected after overnight fast from 8:00, lipid profiles 2 times (pre-test, post-test 1) 3 mL of venous blood samples from an antecubital vein was collected after overnight fast from 8:00 f,Blood pressure 3 times (pre-test, post-test 1, post-test 2) blood pressure was measured by autonomic blood pressure mornitor.

Secondary

MeasureTime frame
Heart rate and pulse oxygen saturation 3 times (pre-test, post-test 1, post-test 2) Heart rate and pulse oxygen saturation were monitored during hypoxic training by a pulse oximeter.,Lung function 3 times (pre-test, post-test 1, post-test 2) Lung function was assessed using a Vitalograph pneumotrac (Vitalograph, Ireland),Heart rate variability 3 times (pre-test, post-test 1, post-test 2) The measurement analysis of heart rate variability was using a device (SA-3000; Medicore),Muscle endurance (six-minute walk test: 6-MWT) 3 times (pre-test, post-test 1, post-test 2) the six-minute walk test was measured of distance walk over a span of 6 minutes.,Hematological variables 2 times (pre-test, post-test 1) 3 mL of venous blood samples from an antecubital vein was collected for complete blood count.

Countries

Thailand

Contacts

Public ContactWisutthida Saengjan
W.saengjan20@gmail.com089-6700044

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Apr 4, 2026