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Int J Sports Med ; 35(14): 1151-4, 2014 Dec.
Article in English | MEDLINE | ID: mdl-25144437

ABSTRACT

This study aimed to determine whether increases in flexibility following a single session predict increases in flexibility after a short-term stretching training program involving static stretching (SS) or proprioceptive neuromuscular facilitation (PNF) techniques. 70 adults (aged 18-30 years) of both sexes were randomly assigned to 2 groups: PNF (2 series of contract-relax stretching) and SS (static stretching for 1 min). Both stretching protocols were performed for 7 consecutive days. Active knee extension was evaluated before and after the first session and one day after the end of the intervention. Two-way ANOVA showed significant flexibility gains for both groups and no difference between them. The changes in flexibility after the first intervention session were strongly correlated with the changes after the training program in both groups (PNF r=0.82, p=0.001; SS: r=0.82, p=0.001). Linear regression showed that the increases in flexibility predicted the gains after both training programs (PNF: r(2)=0.67, p=0.001; SS: r(2)=0.61, p=0.005). In conclusion, the acute changes in flexibility after a single session of PNF and SS predict the gains in flexibility after longer-term training -programs.


Subject(s)
Muscle Stretching Exercises/methods , Muscle, Skeletal/physiology , Adult , Female , Humans , Knee/physiology , Male , Range of Motion, Articular , Young Adult
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