Abstract
Objectives: In addition to the increase in muscle mass and strength promoted by resistance exercise with blood flow restriction (RE-BFR), aerobic exercise with BFR (AE-BFR) improves aerobic fitness. However, acute cardiovascular responses to these exercise protocols are quite unknown and a comparison between RE-BFR and AE-BFR has never been shown.
Equipment and methods: A cross-over design was used to compare the acute cardiovascular effects of RE-BFR and AE-BFR in healthy older adults. Seventeen older adults underwent the RE-BFR protocol in leg press 45°, with 30% of 1RM and AE-BFR protocol in the treadmill, with 40% of VO2 max; both protocols included continued BFR of 50% until the end of the exercise. The cardiovascular variables were continually recorded from 15 min before exercise until 30 min post each exercise session, thorough finger photoplethysmography.
Results: During the interventions no adverse events were reported. The AE-BFR caused lower systolic and diastolic blood pressure peaks, faster heart rate recovery, without increase peripheral vascular resistance, while had a higher cardiac output peak.
Equipment and methods: A cross-over design was used to compare the acute cardiovascular effects of RE-BFR and AE-BFR in healthy older adults. Seventeen older adults underwent the RE-BFR protocol in leg press 45°, with 30% of 1RM and AE-BFR protocol in the treadmill, with 40% of VO2 max; both protocols included continued BFR of 50% until the end of the exercise. The cardiovascular variables were continually recorded from 15 min before exercise until 30 min post each exercise session, thorough finger photoplethysmography.
Results: During the interventions no adverse events were reported. The AE-BFR caused lower systolic and diastolic blood pressure peaks, faster heart rate recovery, without increase peripheral vascular resistance, while had a higher cardiac output peak.
Original language | English |
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Journal | Science & Sports |
Early online date | 23 Dec 2021 |
DOIs | |
Publication status | E-pub ahead of print - 23 Dec 2021 |
Keywords
- Cardiovascular System
- Exercise
- Blood Circulation
- Aging