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The Acute Effect of Resistance Exercise with Blood Flow Restriction with Hemodynamic Variables on Hypertensive Subjects

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Araújo J. P., Silva E. D., Silva J. C. G., Souza T. S. P., Lima E. O., Guerra I., Sousa M. S. C.

Journal of Human Kinetics

2014

vol. 43

issue 1

79-85

The purpose of this study was to analyze systolic blood pressure (SBP), diastolic blood pressure (DBP) and the heart rate (HR) before, during and after training at moderate intensity (MI, 50%-1RM) and at low intensity with blood flow restriction (LIBFR). In a randomized controlled trial study, 14 subjects (average age 45±9,9 years) performed one of the exercise protocols during two separate visits to the laboratory. SBP, DBP and HR measurements were collected prior to the start of the set and 15, 30, 45 and 60 minutes after knee extension exercises. Repeated measures of analysis of variance (ANOVA) were used to identify significant variables (2 x 5; group x time). The results demonstrated a significant reduction in SBP in the LIBFR group. These results provide evidence that strength training performed acutely alters hemodynamic variables. However, training with blood flow restriction is more efficient in reducing blood pressure in hypertensive individuals than training with moderate intensity.

Effects of High-Intensity Blood Flow Restriction Exercise on Muscle Fatigue

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Neto G. R., Santos H. H., Sousa J. B. C., Júnior A. T. A., Araújo J. P., Aniceto R. R., Sousa M. S. C.

Journal of Human Kinetics

2014

vol. 41

issue 1

163-172

Strength training combined with blood flow restriction (BFR) have been used to improve the levels of muscle adaptation. The aim of this paper was to investigate the acute effect of high intensity squats with and without blood flow restriction on muscular fatigue levels. Twelve athletes (aged 25.95 ± 0.84 years) were randomized into two groups: without Blood Flow Restriction (NFR, n = 6) and With Blood Flow Restriction (WFR, n = 6) that performed a series of free weight squats with 80% 1-RM until concentric failure. The strength of the quadriceps extensors was assessed in a maximum voluntary isometric contraction integrated to signals from the surface electromyogram. The average frequency showed significant reductions in the WFR group for the vastus lateralis and vastus medialis muscles, and intergroup only for the vastus medialis. In conclusion, a set of squats at high intensity with BFR could compromise muscle strength immediately after exercise, however, differences were not significant between groups.

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2 Journal of Human Kinetics

2 2014

2 Araújo J. P.

2 Sousa M. S. C.

1 Aniceto R. R.

1 Guerra I.

1 Júnior A. T. A.

1 Lima E. O.

1 Neto G. R.

1 Santos H. H.

1 Silva E. D.

1 Silva J. C. G.

1 Sousa J. B. C.

1 Souza T. S. P.

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The Acute Effect of Resistance Exercise with Blood Flow Restriction with Hemodynamic Variables on Hypertensive Subjects

Effects of High-Intensity Blood Flow Restriction Exercise on Muscle Fatigue