PHYSIOLOGICAL AREA   

Medicina dello Sport 2018 December;71(4):514-20

DOI: 10.23736/S0025-7826.18.03251-9

Copyright © 2018 EDIZIONI MINERVA MEDICA

language: English, Italian

Hemodynamics in resistance training: a comparative analysis between multi and single-joint exercises

Edilson GRANJA ¹, Eliane de MELO MIRANDA PINTO ¹, Anderson de OLIVEIRA REIS ¹, Danielli MELLO ^{2, 3}, Guilherme ROSA ^{1, 2} ✉

¹ Castelo Branco University (UCB/RJ), Rio de Janeiro, Brazil; ² Research Group in Physical Exercise and Health Promotion (UCB/RJ), Rio de Janeiro, Brazil; ³ Physical Education College of the Brazilian Army (EsEFEx/RJ), Rio de Janeiro, Brazil

BACKGROUND: Resistance training (RT) has been demonstrated to be a superior modality for increasing muscle strength, local muscular endurance, power, hypertrophy, and motor performance. However, RT exercises could induce distinct hemodynamics changes by the difference of active muscle mass involved. The aim of this study was to compare the hemodynamic changes in RT performed by multi and single-joint exercises.
METHODS: Nine active individuals (mean age 25.3; standard deviation ±5.4) performed 10 RM at leg press 45º and knee extensor chair with a minimum interval of 48 hours between each exercise. The hemodynamic variables heart rate (HR), systolic (SBP) and diastolic blood pressure (DBP), and double product (DP) were measured before and immediately after each exercise.
RESULTS: The two-way ANOVA presented a significant (P=0.0001) increase on hemodynamics changes between pre and post moments of each exercise, except for DBP on Leg press 45º (P=0.78) and knee extensor chair (P=0.27). After intergroup analysis, no significant changes were observed between the postexercise moments for the hemodynamic variables.
CONCLUSIONS: The muscular mass involved in the strength training in those specific exercises did not influence the acute cardiovascular responses in trained normotensive subjects.

KEY WORDS: Exercise - Arterial pressure - Heart rate