1B.07: EVALUATION OF CENTRAL BLOOD PRESSURE DURING A VERY LONG DISTANCE WALKING. (June 2015)

• Record Type: Journal Article
• Authors: Vitorino, P.V.O.; Souza, W.K.S.B.; Pereira, E.N.; Rezende, J.M.; Arantes, A.C.; Marques, N.G.; Silva, A.A.; Pinheiro, M.C.; Jardim, T.S.V.; Jardim, P.C.B.V.; Sousa, A.L.L.
• Is Part Of: Journal of hypertension. Volume 33(2015)Supplement 1
• Publication Date: 2015-06
• Subjects: Hypertension -- Periodicals; Hypertension -- Periodicals; 616.132005
• DOI: 10.1097/01.hjh.0000467369.42828.38
• Languages: English
• ISSNs: 1473-5598

Abstract

Abstract : Objective: To evaluate the behavior of central blood pressure (BP) variables in male athletes before and during a very long distance walking - 310Km route in five days. Design and method: Longitudinal study with 25 participants. This walking nominated as 'Ecological Walk' happens in Brazil every july since 1991. Its main goals are environmental preservation awareness, health lifestyle incitement as well as exercise practice incitement. The participants traveled the 310 Km during five days alternating walking and light running, a 72 Km/day average. First data collection occurred one month before the walking (V0) and the others, during the second (V2), third (V3) and fourth walking day (V4); just after the athletes finished the daily route. Mobil O Graph was the device used to get central BP variables: pulse wave velocity (PWV), augmentation index (AIx), peripheral vascular resistance (PVR), central pulse pressure (PPc) and amplified pulse pressure (PPA). Results: Sample composition was 25 males, regular physical activity practitioners, mean age 45, 3 ± 9, 1 years old. Brachial systolic (SBP) and diastolic blood pressure (DBP) had the same response during the route, reduction from V0 to V2, and a slight increase from V2 to V3 and V4. PPc decreased from V0 (33, 5mmHg) to V2 (28, 7mmHg); p = 0, 05 and increased from V2 (28, 7mmHg) to V4 (32, 9mmHg); p = 0, 01. Brachial PP decreased from V0 (49, 2mmHg) compared with all the others evaluated days (38, 2mmHg; 42, 7mmHg; 41, 2mmHg), respectively. PPA increased from V0 to V2, and decreased from V0 to V3 and from V0 to V4. PVR increased from V3 (1, 07s*mmHg/ml) to V4 (1, 13 s*mmHg/ml); p = 0, 046. PWV decreased from V0 (7, 0m/sec) to V2 (6, 6m/sec) and from V0 (7, 0m/sec) to V3 (6, 5m/sec). Pulse wave velocity showed strong correlation with age during all the measurements. Conclusions: These datas indicate that central blood pressure changes are sharpest in the first days, after this it seems that an exercise physiological accommodation occurred. There was a strong correlation between age and pulse wave velocity in this sample.