The Effects of High Intensity Interval Exercise With 1- and 3- Min Recovery Times in Obese
Overview
- Phase
- N/A
- Intervention
- Not specified
- Conditions
- Obesity
- Sponsor
- Federal University of Paraíba
- Enrollment
- 12
- Primary Endpoint
- Forearm Blood Flow and Vascular Conductance
- Status
- Completed
- Last Updated
- 8 years ago
Overview
Brief Summary
Obesity is a complex and multifactorial disease. Excess weight is related to endothelial dysfunction, inflammation and oxidative stress which increases the risk for cardiovascular diseases. High-intensity interval exercise can release vasodilatory substances and promote increased muscle blood flow.
Detailed Description
This study evaluated the effects of the recovery interval duration (1 vs. 3 min) in high intensity interval exercise (HIIE) on the hemodinamics responses in obese individuals. Twelve obese subjects (27 ± 3.8 yrs) were evaluated, who underwent three experimental sessions with a randomized crossover design: one control session (no exercise) and two HIIE sessions with the same workload (10 x 1min @92%VO2max / 1\[HIIE 1\] or 3\[HIIE 3\] min @0%). Forearm blood flow (FBF) and blood pressure (BP) were measured before and after the experimental sessions. Heart rate and relative perceived exertion were assessed during HIIE.
Investigators
Yokiny Silva
Physiotherapist
Federal University of Paraíba
Eligibility Criteria
Inclusion Criteria
- Not provided
Exclusion Criteria
- Not provided
Outcomes
Primary Outcomes
Forearm Blood Flow and Vascular Conductance
Time Frame: Up to 2 years
Forearm muscular blood flow was obtained through the venous occlusion plethysmography technique (19). For this, a silicon tube filled with mercury and connected to a low-pressure transducer was placed around the forearm, 5 cm away from the humeral-radial joint, connected to a plethysmograph (Hokanson® / EC6 plethysmograph, Bellevue, Washington, USA). A cuff was placed around the wrist and another at the upper arm, and the wrist cuff was inflated to a supra-systolic level every 1 min before measurements start. The arm cuff was inflated above the venous pressure at 10 s intervals for a period of 7 to 8 s. The increase in tension in the silastic tube reflects the increase in the volume of the forearm, which indicates vasodilation. The muscle flow wave signal was collected and stored on the WINDAQ DI 200 DATAQ program. Vascular conductance in the forearm was calculated by the blood flow ratio in the forearm (mL.min-1.100mL-1) and mean arterial pressure (mmHg) multiplied by 100.
Secondary Outcomes
- Heart rate(Up to 2 years)
- Blood pressure(Up to 2 years)