Banca de DEFESA: INGRID BEZERRA BARBOSA COSTA
Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.DISCENTE : INGRID BEZERRA BARBOSA COSTA
DATA : 07/08/2017
HORA: 13:30
LOCAL: DEPARTAMENTO DE EDUCAÇÃO FÍSICA - SALA DE VÍDEO CONFERÊNCIA
TÍTULO:
EFFECT OF A SINGLE SESSION OF SELF-PACED WALKING OUTDOORS ON AMBULATORY BLOOD PRESSURE IN INACTIVE HYPERTENSIVE OLDER WOMEN: A CROSSOVER TRIAL
PALAVRAS-CHAVES:
Key-words: hypertension; ambulatory blood pressure monitoring; postexercise hypotension; self-paced walking.
PÁGINAS: 3562
GRANDE ÁREA: Ciências da Saúde
ÁREA: Educação Física
RESUMO:
OBJECTIVE: The aim of this study was to analyze the effect of a single session of self-paced walking outdoor on ambulatory blood pressure (BP) in inactive hypertensive older women.
METHODS: Twenty medicated hypertensive older women (64.9 ± 4.5 years, 29.0 ± 4.3 kg/m², resting BP 121.5 ± 11.2 / 59.5 ± 7.9 mmHg) physically inactive (< 8.000 steps/day) completed this randomized controlled trial with a crossover design. After an initial screening, the volunteers participated in two experimental sessions in a randomized order, with one-week interval between them: i) self-paced walking outdoor (in a 400 m outdoor track) and ii) control session (no exercise). Both sessions were performed between 7:00-8:00AM. Heart rate (HR), rating of perceived exertion (RPE, 6-20), and affective response (AR, -5/+5) were monitored during the self-paced walking session. Ambulatory BP was assessed during a 20 h period (awake: 13 h; asleep: 7 h) following the self-paced walking session and control session using an ambulatory BP monitoring device. Results are described as mean and confidence intervals 95%. Systolic and diastolic BP in 20 h, awake and asleep periods between the walking and control sessions were compared using paired t test. A two-way repeated measures ANOVA (condition vs. time) was used to compare the mean values of ambulatory BP during 1-6 h and 7-13 h (awake) and 14-20 h (asleep) periods after self-paced walking session and control session. Bonferroni’s pos hoc test was used to identify possible differences. A p-value < 0.05 was set as statistical significant.
RESULTS: The intensity of the self-paced walking session was 58.6% (54.1-63.5) of HR reserve, the RPE was 11 (10-12) and the AR was +3 (3-4). Systolic BP was 3.4 mmHg (0.9-5.9) and 4.0 mmHg (1.6-6.4) lower in the 20 h and awake periods, respectively, following the self-paced walking compared to the control session (p < 0.05). Reductions of systolic BP presented a greater magnitude in the first six hours following the self-paced walking session (6 mmHg; p < 0.05). No change was obseved in systolic BP during the asleep period (p > 0.05). There were no changes in diastolic BP in the 20 h, awake and asleep periods following the self-paced walking session compared to the control session (p > 0.05). It was observed a reduction of systolic BP load (6,3%) and systolic BP variability (6,2) post-walking in the 20 h period (p < 0,05). There was a strong and positive correlation between the reduction of systolic BP in the first six hours post-walking and the reduction of systolic BP in the 20 h period (r = 0,68; p <0,001).
CONCLUSION: The self-paced walking outdoor reduces systolic BP in the 20 h and awake periods in inactive hypertensive older women, essentially due the PEH in the first six hours post-exercise. Moreover, it reduces the systolic BP load and systolic BP variability in the 20 h period. Considering that the older women perceive the session as light-moderate and pleasant, the self-paced walking seems to be an interesting approach for initial exercise recommendation for inactive hypertensive older women.
MEMBROS DA BANCA:
Presidente - 2682821 - EDUARDO CALDAS COSTA
Interno - 1793257 - ARNALDO LUIS MORTATTI
Interno - 1989744 - HASSAN MOHAMED ELSANGEDY
Externo ao Programa - 839.714.759-49 - SÉRGIO RODRIGUES MOREIRA - UCB
Externo à Instituição - DANIEL UMPIERRE DE MORAES - UFPel