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Author Spotlight: Assessing the Reliability of Doppler Ultrasound in Measuring Leg Blood Flow
Published on: December 15, 2023
The acute effect of resistance exercise with blood flow restriction with hemodynamic variables on hypertensive
Joamira P Araújo1, Eliney D Silva2, Julio C G Silva3
1Associate Program on Graduate Program in Physical Education UPE / UFPB, João Pessoa, Paraíba, Brazil. ; Federal Institute of Education Science and Technology of Ceara-Campus Juazeiro do Norte, Brazil. ; Kinanthropometry and Human Development Laboratory, Federal University of Paraiba, João Pessoa/PB, Brazil.
Abstract:
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 × 5; group × 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.
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Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.
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