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The aim of this study is to analyze acute responses of arm-cranking exercise on cardiovascular function of peripheral arterial disease patients and compare it to the main exercise recommendation, walking exercise.
Twenty patients with peripheral arterial disease and claudication symptoms will be recruited. The patients will perform three experimental conditions, in randomized order (walking, arm-cranking and control). The exercise conditions will be composed of 15 bouts of 2 minutes exercise with an intensity equivalent to 13-15 on Borg's Subjective Perceived Exertion Scale. During the experimental conditions (walking, arm-cranking and control) blood pressure, heart rate and cerebral blood velocity will be evaluated, along with perceived exertion and affective responses. Before and after experimental conditions, vascular function, blood pressure, heart rate variability, cerebral blood velocity, subjective perceived exertion and affective responses will be evaluated.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Walking Condition | Experimental | In the walking condition, the patients will perform fifteen bouts of two minutes of treadmill walking with an interval of two minutes between bouts, at an intensity equivalent to 13-15 on Borg's subjective perceived exertion scale. The condition will have a total of sixty minutes of duration. |
|
| Arm-Cranking Condition | Active Comparator | In the arm-cranking condition, the patients will perform fifteen bouts of two minutes of arm-cranking with an interval of two minutes between bouts, at an intensity equivalent to 13-15 on Borg's subjective perceived exertion scale. The condition will have a total of sixty minutes of duration. |
|
| Control Condition | Sham Comparator | The control condition will consist of resting in the standing position for thirty minutes. The patients will be instructed to rest in the sitting position for two minutes at periods equivalent to the intervals from the exercise conditions, totalling sixty minutes of duration. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Exercise | Behavioral | Three conditions will be tested: Walking, arm-cranking and control condition. |
|
| Measure | Description | Time Frame |
|---|---|---|
| Change from baseline in vascular function post-exercise in the brachial and femoral arteries. | Vascular function will be measured in the supine position by the flow-mediated dilation (FMD) technique, through Doppler ultrasonography. | Change from baseline at post-intervention, after 20 minutes. |
| Measure | Description | Time Frame |
|---|---|---|
| Change from baseline in blood pressure post-exercise. | Blood pressure will be measured by an automatic monitor. | Change from baseline at post-intervention, after 10 minutes. |
| Change from baseline in heart rate variability post-exercise. |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Marilia Correia, PhD | Nove de Julho University | Principal Investigator |
| Raphael Ritti-Dias, PhD | Nove de Julho University | Study Chair |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Nove de Julho University | São Paulo | 01525-000 | Brazil |
Individual participant data is planned to be made available after the completion of the study, if required.
Six months after the completion of the study.
The data will be shared with certified researchers in the field.
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The patients will perform three experimental conditions, in randomized order (walking, arm-cranking and control). The exercise conditions will be composed of 15 bouts of 2 minutes exercise with an intensity equivalent to 13-15 on the Borg's subjective perceived exertion scale.
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The outcomes assessor is blind for the condition performed by the patients.
Autonomic modulation of the cardiovascular system will be measured by the heart rate variability (HRV) technique, by a heart rate monitor valid for this function.
| Change from baseline at post-intervention, after 30 minutes. |
| Change from baseline in cerebral blood velocity post-exercise. | Cerebral blood velocity will be measured by a transcranial doppler ultrasound. | Change from baseline at 35 minutes after the beginning of the exercise. |
| ID | Term |
|---|---|
| D007383 | Intermittent Claudication |
| D002318 | Cardiovascular Diseases |
| D058729 | Peripheral Arterial Disease |
| ID | Term |
|---|---|
| D016491 | Peripheral Vascular Diseases |
| D014652 | Vascular Diseases |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |
| D050197 | Atherosclerosis |
| D001161 | Arteriosclerosis |
| D001157 | Arterial Occlusive Diseases |
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| ID | Term |
|---|---|
| D015444 | Exercise |
| ID | Term |
|---|---|
| D009043 | Motor Activity |
| D009068 | Movement |
| D009142 | Musculoskeletal Physiological Phenomena |
| D055687 | Musculoskeletal and Neural Physiological Phenomena |
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