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Official Journal of the Italian Sports Medicine Federation
Indexed/Abstracted in: BIOSIS Previews, EMBASE, Science Citation Index Expanded (SciSearch), Scopus
Impact Factor 0,163
Online ISSN 1827-1863
Eduardo CHAVES 1, Gabriel RODRIGUES NETO 1-3, Maria DO SOCORRO CIRILO-SOUSA 2, 3, Humberto MIRANDA 1, Carolina DE OLIVEIRA ARAÚJO 1, Jeferson MACEDO VIANNA 4, Giovanni DA SILVA NOVAES 5, Jefferson DA SILVA NOVAES 1
1 Department of Gymnastics, Physical Education Graduate Program, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil; 2 Department of Physical Education, Associate Graduate Program in Physical Education UPE/UFPB, Federal University of Paraíba (UFPB), João Pessoa, Brazil; 3 Kinanthropometry and Human Development Laboratory, Department of Physical Education, Federal University of Paraíba (UFPB), João Pessoa, Brazil; 4 Graduate Program in Physical Education, Federal University of Juiz de Fora (UFJF), Juiz de Fora, Brazil; 5 Graduate Program in Physical Education, University Castelo Branco, Rio de Janeiro, Brazil
BACKGROUND: The aim of the present study was to analyze the effect of resistance training with and without blood flow restriction (BFR) on isometric strength during different phases of the menstrual cycle (MC).
METHODS: A total of 30 untrained women (aged 18 to 32 years old) were randomly and proportionally divided into three groups: HI (high-intensity exercises at 80% of one-repetition maximum [1RM]); LI+BFR (low-intensity exercises at 20% of 1RM combined with BFR); and LI (low-intensity exercises at 20% of 1RM). Dynamometry was used to evaluate right and left hand, scapular, lumbar, and lower limb strength on the 1st day (follicular phase), 14th day (ovulatory phase) and 26th-28th days (luteal phase) of the MC. Eight training sessions took place between the follicular and luteal phases.
RESULTS: The isometric trunk strength (scapular dynamometry) increased significantly in the group with BFR compared with the LI group in the ovulatory phase (P=0.045). The isometric strength of the right and left hands, lower limbs and lower back increased significantly in the HI and LI groups during the ovulatory and luteal phases (P<0.05); however, there were no significant changes in these variables in the LI+BFR group (P>0.05).
CONCLUSIONS: We conclude that the isometric trunk strength increased in the group with BFR compared with the LI group in the ovulatory phase; however, there was greater increase in the isometric strength of the right and left hands, lower limbs and lower back in the HI and LI groups compared with the LI+BFR group during the ovulatory and luteal phases.
language: English, Italian