Effect of Strength Training on Blood Pressure Measured in Various Conditions in Sedentary Men

Abstract

To examine the effect of long term strength training on heart rate and blood pressure, measured in different conditions, and on their variability, thirty healthy, previously sedentary men were randomized into a training and a control group. The strength training program consisted of 48 training sessions on a multigym apparatus at a frequency of 3 sessions each week, involving leg press, bench press, leg curl, shoulder press, leg extension and sit ups. The control group was asked not to change their sedentary lifestyle. In the subjects of the training group the load could be increased significantly for all exercises (p < 0.01). Heart rate and blood pressure were measured at rest in the supine and sitting position, during 24 hours with a non-invasive ambulatory device and during an exercise test on a cycloergometer. Repeated measures analysis of variance did not show an effect of strength training on heart rate or on blood pressure. In addition, power spectral analysis of the RR interval (ECG) and of the beat-to-beat blood pressure in the supine subject revealed similar total, low frequency and high frequency power before and after training, indicating that the neural control of both heart rate and blood pressure was not affected by a 16-week program of strength training.

Effect of 4 weeks of aerobic or resistance exercise training on arterial stiffness, blood flow and blood pressure in pre- and stage-1 hypertensives

“…Hagberg et al 27 also demonstrated a decrease in SBP (20 mm Hg) in hypertensive men following 9 months of low-to moderate-intensity aerobic training, with a concomitant decrease in DBP (11-12 mm Hg). One previous study 28 reported that 4 months of endurance training in middle-aged men resulted in no changes in resting SBP and o5 mm Hg decrease in resting DBP. Our results support these earlier studies, 27,28 indicating that exercise training has beneficial effects in individuals with pre-to stage-1 hypertension (mean BP 139/79 mm Hg) with as little as 4 weeks of moderate-intensity exercise.…”

“…One previous study 28 reported that 4 months of endurance training in middle-aged men resulted in no changes in resting SBP and o5 mm Hg decrease in resting DBP. Our results support these earlier studies, 27,28 indicating that exercise training has beneficial effects in individuals with pre-to stage-1 hypertension (mean BP 139/79 mm Hg) with as little as 4 weeks of moderate-intensity exercise. Our 3-4 mm Hg decreases in DBP and SBP parallel those recently reported in a meta-analysis by Fagard,29 who has shown that AE decreases in BP in normotensives of À3.0 (SBP) mm Hg and À2.4 (DBP) mm Hg with even greater reductions in resting BP in hypertensives (À6.9 and À4.9 mm Hg in SBP and DBP, respectively).…”

Força muscular versus pressão arterial de repouso: uma revisão baseada no treinamento com pesos

“…Foram encontradas 12 referências sobre o treinamento com pesos em longo prazo e a PA de repouso em normotensos (7,(29)(30)(31)(32)(33)(34)(35)(36)(37)(38)(39) e seis referências em hipertensos (5,32,(40)(41)(42)(43) . Dos estudos com normotensos, duas referências possuíam dois grupos experimentais (35,37) .…”

“…Dessa forma, envolvendo normotensos, foram considerados 14 grupos de treinamento. Desses grupos envolvendo normotensos, 11 reportaram aumento significativo da força muscular (7,29,30,32,(34)(35)(36)(37)39) ; cinco, redução na PAS (7,31,35,37) ; quatro, redução na PAD (7,31,35) . Os quatro que reportaram redução na PAD também relataram redução na PAS.…”

“…Tal aumento correlaciona-se com a intensidade do treinamento. Por exemplo, o estudo de Van Hoof et al (34) , por a carga de esforço ser relativamente elevada, ocasionou maior aumento da força muscular que intensidades mais baixas (35) . Mas, independentemente do comportamento da força muscular com o treino, reduções de repouso na PAS e na PAD ocorreram na menor parte das pesquisas, conotando uma relação inversa entre a qualidade física e a variável fisiológica.…”