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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Strength training with and without arteriovenous blood flow restriction improves performance, regardless of changes in muscle hypertrophy, in Wistar rats

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Author(s):
NÁDIA F. GARCIA [1] ; CAMILA DE MORAES [2] ; MACÁRIO A. REBELO [3] ; SAVANAH MARIA G.R. PETERS [4] ; FÁBIO M.P. DE CASTRO [5] ; ENRICO F. PUGGINA
Total Authors: 6
Affiliation:
[1] University of São Paulo (USP). School of Medicine - Brasil
[2] University of São Paulo (USP). School of Physical Education and Sport of Ribeirão Preto - Brasil
[3] University of São Paulo (USP). School of Physical Education and Sport of Ribeirão Preto - Brasil
[4] University of São Paulo (USP). School of Physical Education and Sport of Ribeirão Preto - Brasil
[5] University of São Paulo (USP). School of Medicine - Brasil
Total Affiliations: 6
Document type: Journal article
Source: Anais da Academia Brasileira de Ciências; v. 94, 2022-10-03.
Abstract

Abstract Strength training (ST) with blood flow restriction (BFR) is known to promote increases in hypertrophy and strength sometimes similar to traditional ST despite the effects of the arterial BFR on muscle adaptations and safety are not well established. The aim of this study was to assess whether ST with arterial BFR is able to improve muscular adaptations, performance and its safety in Wistar rats. Animals aging 8 weeks were divided in four groups: sedentary sham (S/S), sedentary with arterial BFR (S/BFR), trained sham (T/S), and trained with arterial BFR (T/BFR). Training protocol consisted of four weeks of ST composed by six sets of 10 ladder climbing with 50% of 1 maximal voluntary contraction. Body weight, epididymal fat, maximum loaded weight, manual grip strength, muscular hypertrophy index, systolic blood pressure, enzyme activity of superoxide dismutase, nitrite/nitrate concentration and tumor necrosis factor alpha were analyzed. The BFR rate was between 36% and 38%. T/BRF was effective to promote strength and hypertrophy. T/S is an alternative to improve strength, but it did not promote hypertrophy. Furthermore, we found no significant cardiac and metabolic changes. Thus, T/BFR is able to improve muscle adaptations and performance in rats, without causing cardiovascular and metabolic damage. (AU)

FAPESP's process: 17/13348-6 - EFFECT OF STRENGTH TRAINING AND VASCULAR OCCLUSION ON VASCULAR REACTIVITY OF THE ABDOMINAL AORTA IN WISTAR RATS
Grantee:Enrico Fuini Puggina
Support Opportunities: Regular Research Grants