title: Acute effects of proprioceptive neuromuscular facilitation and static stretching on maximal voluntary contraction and muscle electromyographical activity in indoor soccer players.
abstract: The aim was to investigate and compare the effects of proprioceptive neuromuscular facilitation (PNF) and static stretching (SS) on maximal voluntary contraction (MVC) and muscle activation in indoor soccer players. Thirty-three young adult men were divided into two groups: (i) sedentary and (ii) trained. Each group completed three different experimental trials: SS, PNF and no stretching (NS). The MVC of knee extension was evaluated before and immediately after each condition along with electromyography from the vastus lateralis (VL) and rectus femoris (RF) muscles of the dominant leg. PNF or SS techniques induced no decrease on MVC and muscle electromyographical activity in indoor soccer players (P>0·05). The electromyography of the RF and VL was lower after SS only in the sedentary group (P≤0·05). Short-duration PNF or SS has no effect on isometric MVC and muscle activity in indoor soccer players.
authors.affiliation: Graduation Program in Physical Education, Catholic University of Brasilia, Brasilia, Brazil.
authors.forename: Erika da Fonseca Silva
authors.initials: Eda F
authors.lastname: Reis
authors.forename: Guilherme Borges
authors.initials: GB
authors.lastname: Pereira
authors.forename: Nuno Manuel Frade
authors.initials: NM
authors.lastname: de Sousa
authors.forename: Ramires Alsamir
authors.initials: RA
authors.lastname: Tibana
authors.forename: Mauro Fernando
authors.initials: MF
authors.lastname: Silva
authors.forename: Marcia
authors.initials: M
authors.lastname: Araujo
authors.forename: Italo
authors.initials: I
authors.lastname: Gomes
authors.forename: Jonato
authors.initials: J
authors.lastname: Prestes
mesh_terms: D000328:Adult; D004576:Electromyography; D006801:Humans; D007537:Isometric Contraction; D008297:Male; D053580:Muscle Strength; D052580:Muscle Stretching Exercises; D011434:Proprioception; D052097:Quadriceps Muscle / Q000294:innervation*; D057185:Sedentary Behavior; D011984:Sensory Receptor Cells / Q000502:physiology*; D012916:Soccer; D013997:Time Factors; D014836:Volition; D055815:Young Adult
keywords: flexibility; indoor soccer; isometric contraction; muscle activation; stretching exercises; warm-up