title: Acute effects of different stretching techniques on the number of repetitions in a single lower body resistance training session.
abstract: This study aimed to investigate the acute effects of passive static and ballistic stretching on maximal repetition performance during a resistance training session (RTS). Nine male subjects underwent three experimental conditions: ballistic stretching (BS); passive static stretching (PSS); and a specific warm-up (SW). The RTS was composed of three sets of 12RM for the following exercises: leg press 45 (LP), leg extension (LE), leg curl (LC), and plantar flexors (PF). Performance of six sessions was assessed 48 hours apart. The first visit consisted of a familiarization session including stretching methods and exercises used in the RTS. On the second and third visit, a strength test and retest were performed. During the fourth to the sixth visit, the volunteers randomly performed the following protocols: BS+RTS; PSS+RTS; or SW+RTS. For the sum of the RM number of each three-set exercise, significant differences were found between PSS vs. SW for the LP (p = 0.001); LE (p = 0.005); MF (p = 0.001); and PF (p = 0.038). For the comparison between the methods of stretching PSS vs. BS, significant differences were found only for the FP (p = 0.019). When analyzing the method of stretching BS vs. SW, significant differences were found for the LP (p = 0.014) and MF (p = 0.002). For the total sum of the RM number of three sets of the four exercises that composed the RTS, significant differences were observed (p < 0.05) in the following comparisons: PPS vs. SW (p = 0.001), PPS vs. BS (p = 0.008), and BS vs. SW (p = 0.002). Accordingly, the methods of passive static and ballistic stretching should not be recommended before a RTS.
authors.affiliation: Federal University of Rio de Janeiro. Postgraduate Program in Physical Education Stricto Sensu/ UFRJ. Rio de Janeiro, Brazil.
authors.forename: Marcos A
authors.initials: MA
authors.lastname: Sá
authors.affiliation: Federal University of Rio de Janeiro. Postgraduate Program in Physical Education Stricto Sensu/ UFRJ. Rio de Janeiro, Brazil. ; Department of Physical Education, Associate Graduate Program in Physical Education UPE / UFPB, João Pessoa, Paraíba -Brazil.
authors.forename: Gabriel R
authors.initials: GR
authors.lastname: Neto
authors.affiliation: California State University, Fullerton. Department of Kinesiology. Fullerton, California.
authors.forename: Pablo B
authors.initials: PB
authors.lastname: Costa
authors.affiliation: Federal University of Rio de Janeiro. Postgraduate Program in Physical Education Stricto Sensu/ UFRJ. Rio de Janeiro, Brazil. ; University Estacio de Sá, Rio de Janeiro, Rio de Janeiro - Brazil.
authors.forename: Thiago M
authors.initials: TM
authors.lastname: Gomes
authors.affiliation: Federal University of Rio de Janeiro. Postgraduate Program in Physical Education Stricto Sensu/ UFRJ. Rio de Janeiro, Brazil.
authors.forename: Cláudio M
authors.initials: CM
authors.lastname: Bentes
authors.affiliation: Federal University of Rio de Janeiro. Postgraduate Program in Physical Education Stricto Sensu/ UFRJ. Rio de Janeiro, Brazil.
authors.forename: Amanda F
authors.initials: AF
authors.lastname: Brown
authors.affiliation: Federal University of Rio de Janeiro. Postgraduate Program in Physical Education Stricto Sensu/ UFRJ. Rio de Janeiro, Brazil.
authors.forename: Jefferson S
authors.initials: JS
authors.lastname: Novaes
keywords: ballistic stretching; lower limbs; muscular strength; passive stretching; warm-up