Hipotensão pós-exercício em diferentes ordens de treinamento concorrente de hidroginástica em mulheres idosas hipertensas

Abstract

Aims: To analyse the post-exercise hypotension phenomenon in hypertensive older women performing two water-based concurrent training sessions with distinct exercise sequence (i.e. endurance followed by strength exercise or strength followed by endurance exercise), compared to a non-exercise control session. Material and Methods: To do so, 15 hypertensive older women performed three experimental protocols: A water-based strength-endurance concurrent exercise session (SE), a water-based endurance-strength concurrent exercise session (ES), and a dry land-based control session (CON). The endurance exercise was based on heart rate relative to the anaerobic threshold, and the strength component was performed at maximum voluntary velocity. Participants’ office blood pressure was recorded prior, and throughout 90 minutes after each experimental protocol. Data were analysed using Generalized Estimating Equations (GEE) with the Bonferroni post-hoc (α=0.05). Results: Compared to the non-exercise visit, systolic blood pressure (SBP) waslowerat20(Mean,95%CISE:-11.6,-18.1a-5.1mmHg;ES:-6.5,-15.2a2.2mmHg; CON: -1.5, -11.2 a 8.3 mmHg) and 50 min (Mean, 95% CISE: -12.3, -23.9 a-0.7 mmHg; ES: -2.6, -14.7 a 9.5 mmHg; CON: 0.7, -6.5 a 8.0 mmHg) after the exercise protocols, with no difference in the respective time-points between the SE and ES exercise protocols. At 60 (Mean, 95% CISE: -11.6, -22.2 a -1.0 mmHg;CON:-0.6,-10.5a9.3mmHg)and70min(Mean,95%CISE:-12.9,-23.4a-2.4mmHg;CON: 0.3, -7.0 a 7.7 mmHg) SBP values remained lower in the SE compared to the CON protocol, whereas participant’s SBP after the ES protocol was similar to boththe SE and the CON protocols at the same time-points. The diastolic blood pressure (DBP) was reduced at 60 min after the SE protocol compared to ES and CON protocols (Mean, 95% CISE: -8.0, -12.9 a -3.1 mmHg; ES: 1.4, -4.4 a 7.3 mmHg; CON:-1,-5.1a3.1mmHg),withnodifferencebetweenESandCON.TheDBPwas 8also lower at 70 min after the SE compared to the CON protocol (Mean, 95% CISE: -7.7, -13.1 a -2.3 mmHg; CON: 0.9, -3.3 a 5.1 mmHg). No significant differences were observed between protocols at other time-points. Conclusion: In summary, the water-based strength-endurance concurrent exercise sequence resulted in greater post-exercise hypotension in older women with controlled hypertension.