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Effects of home-based isometric handgrip training in older adults with high blood pressure
Session:
Comunicações Orais (Sessão 25) - Risco CV, Prevenção e Reabilitação Cardíaca 2 - Vários
Speaker:
Diogo Pinto
Congress:
CPC 2022
Topic:
J. Preventive Cardiology
Theme:
27. Hypertension
Subtheme:
27.4 Hypertension – Treatment
Session Type:
Comunicações Orais
FP Number:
---
Authors:
Diogo Pinto; Nuno Dias Rato; Maria j. Marques; Teresa Amaral; Leonor Amaral; Pedro Ruivo; Ricardo Abreu; Cristiana Carneiro; Ana p. Oliveira; Jorge Polónia; José Mesquita-Bastos; João l. Viana; Linda s. Pescatello; Fernando Ribeiro; Alberto j. Alves
Abstract
<p style="text-align:justify"><span style="font-size:medium"><span style="font-family:Calibri,sans-serif"><span style="color:#000000"><strong>Background: </strong>Evidence suggests isometric handgrip training (IHT) lowers blood pressure (BP). However, the impact of IHT in older adults is unclear. Here we report the preliminary results of the HoldAge trial on the effects of home-based IHT and aerobic exercise training (AET) on BP in older adults with high normal blood pressure or hypertension (ClinicalTrials.gov: NCT04275037). </span></span></span></p> <p style="text-align:justify"><span style="font-size:medium"><span style="font-family:Calibri,sans-serif"><span style="color:#000000"><strong>Methods: </strong>Participants (n=35; 46% men; age 72.2±3.5 years) with a resting systolic BP of 140.1±15.9 mmHg and diastolic BP of 80.9±8.6 mmHg were randomized into IHT (n=14), AET (n=12), or an attention control group (ACG, n=9). Participants performed IHT or AET, 3 times/week, for 8 weeks. IHT consisted of 4x45 sec contractions, alternatively with both hands, at an intensity of 50% of the maximum voluntary contraction, with a 1-min interval between sets. AET consisted of walking at an intensity of 50-70% of the peak maximal oxygen consumption. ACG continued with their daily life activities.</span></span></span></p> <p style="text-align:justify"><span style="font-size:medium"><span style="font-family:Calibri,sans-serif"><span style="color:#000000"><strong>Results: </strong>Of the 35 enrolled participants, 32 finished the intervention (91.4%), with an adherence rate of 95.2% for IHT and 79.4% for AET. There were no differences between groups at baseline for office SBP (<span style="color:black">p=0.137),</span>DBP (<span style="color:black">p=0.200</span>), or pulse pressure (PP, <span style="color:black">p=0.255</span>)<sub>.</sub> AET reduced SBP (146.4±16.6 vs 135.0±17.2 mmHg; p=0.048) and PP (61.7±10.2 vs 55.5±10.5; p=0.025), but not DBP (84.5±8.9 vs 79.5±9.6 mmHg; p=0.163). IHT reduced SBP (140.6±16.2 vs 128.7±10.7 mmHg; p=0.004), DBP (80.5±8.4 vs 75.3±8.9 mmHg; p=0.030), and PP (60.2±11.3 vs 53.4±9.8; p=0.012). There were no differences in ACG for SBP (131.3±13.9 vs 126.9±20.5 mmHg; p=0.273), DBP (78±8.3 vs 75±9.5 mmHg; p=0.058), and PP (53.2±11.5 vs 51.8±13.7; p=0.628). Moreover, AET and IHT elicited similar reductions in SBP (p= 0.89) and DBP (p=0.97). </span></span></span></p> <p style="text-align:justify"><span style="font-size:medium"><span style="font-family:Calibri,sans-serif"><span style="color:#000000"><strong>Conclusion: </strong>AET and IHT lowered SBP and PP in older adults with high BP, whereas IHT lowered DBP but not AET. <span style="color:black">Our findings suggest IHT and/or AET may be used as adjuvant lifestyle therapy for controlling BP in older adults.</span></span></span></span></p>
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