| Autor: |
Cavalcante PA; Translational Physiology Laboratory, São Judas Tadeu University (USJT), São Paulo, Brazil ; Postgraduate Program in Physical Education and Aging Science, São Judas Tadeu University (USJT), São Paulo, Brazil., Rica RL; Translational Physiology Laboratory, São Judas Tadeu University (USJT), São Paulo, Brazil ; Postgraduate Program in Physical Education and Aging Science, São Judas Tadeu University (USJT), São Paulo, Brazil., Evangelista AL; Translational Physiology Laboratory, São Judas Tadeu University (USJT), São Paulo, Brazil ; Department of Physical Education, Nove de Julho University (UNINOVE), São Paulo, Brazil., Serra AJ; Department of Physical Education, Nove de Julho University (UNINOVE), São Paulo, Brazil ; Postgraduate Program in Biophotonics Applied to Health Sciences, Nove de Julho University (UNINOVE), São Paulo, Brazil., Figueira A Jr; Translational Physiology Laboratory, São Judas Tadeu University (USJT), São Paulo, Brazil ; Postgraduate Program in Physical Education and Aging Science, São Judas Tadeu University (USJT), São Paulo, Brazil., Pontes FL Jr; Department of Gerontology of Arts, Science and Humanities School, São Paulo University, São Paulo, Brazil., Kilgore L; Institute of Clinical Exercise and Health Science, University of the West of Scotland, Hamilton, Lanarkshire, Scotland., Baker JS; Institute of Clinical Exercise and Health Science, University of the West of Scotland, Hamilton, Lanarkshire, Scotland., Bocalini DS; Translational Physiology Laboratory, São Judas Tadeu University (USJT), São Paulo, Brazil ; Postgraduate Program in Physical Education and Aging Science, São Judas Tadeu University (USJT), São Paulo, Brazil. |
| Abstrakt: |
Among all nonpharmacological treatments, aerobic or resistance training (RT) has been indicated as a significantly important strategy to control hypertension. However, postexercise hypotension responses after intensity alterations in RT are not yet fully understood. The purpose of this study was to compare the outcomes of differing intensities of RT on hypertensive older women. Twenty hypertensive older women participated voluntarily in this study. After a maximum voluntary contraction test (one repetition maximum) and determination of 40% and 80% experimental loads, the protocol (3 sets/90″ interset rest) was performed in a single session with the following exercises: leg press, leg extension, leg curl, chest press, elbow flexion, elbow extension, upper back row, and abdominal flexion. Systolic and diastolic blood pressures were evaluated at rest, during exercise peak, and after 5, 10, 15, 30, 45, and 60 minutes of exercise and compared to the control. Both experimental loads were effective (P<0.01) in promoting postexercise systolic hypotension (mmHg) compared to controls, after 30, 45, and 60 minutes, respectively, at 40% (113±2, 112±4, and 110±3 mmHg) and 80% (111±3, 111±4, and 110±4 mmHg). Both procedures promoted hypotension with similar systolic blood pressures (40%: -11%±1.0% and 80%: -13%±0.5%), mean arterial blood pressures (40%: -12%±5.5% and 80%: -12%±3.4%), and rate-pressure products (40%: -15%±2.1% and 80%: -17%±2.4%) compared to control measures (systolic blood pressure: 1%±1%, mean arterial blood pressure:\ 0.6%±1.5%, rate-pressure product: 0.33%±1.1%). No differences were found in diastolic blood pressure and heart rate measures. In conclusion, hypertensive older women exhibit postexercise hypotension independently of exercise intensity without expressed cardiovascular overload during the session. |
