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Acute effect of the proprioceptive neuromuscular facilitation method on vertical jump performance

100%

Nogueira C., dos Santos Galdino L., de Souza Vale R., de Mello D., Dantas E.

Biomedical Human Kinetics

2010

vol. 2

1-4

Study aim: To assess the acute effect of the proprioceptive neuromuscular facilitation method (PNF) on the explosive strength of lower extremities of male soldiers.Material and methods: A group of 26 male soldiers performed two exercise sessions on different days, in a random order: without stretching (control exercise) or by applying PNF (experimental exercise). Before and after the PNF (0, 10, 20, 40 and 60 min), 3 vertical counter-movement jumps on a tensometric platform were executed.Results: CMJ results in the experimental sessions were significantly (p<0.001) decreased after the PNF exertion in relation to the initial (pre-session) value. No significant post-session decreases were found in the control exercise. However, the differences between the experimental and control results were significant (p<0.05) only immediately after the PNF exertion and 10 min later.Conclusion: The PNF method negatively affects the vertical jump performance and, thus, ought not to be used as part of warm-ups.

Effects of Different Intensities of Flexibility Training on Explosive Force

86%

Galdino L., Nogueira C., e Silva Galdino E., de Lima J., de Souza Vale R., Dantas E.

Human Movement

2010

vol. 11

issue 2

162-166

Purpose. To verify whether there are changes in the performance levels of the explosive force when the same muscle group previously underwent different intensities of flexibility training (stretch & flex). Basic procedures. The tests were performed with 25 females on three consecutive days and were preceded by a 10-minute warm-up period. First, each participant performed a maximum vertical jump on a contact platform. The jump was repeated after 10 minutes, and the first day was considered the control (C). On the second day, a routine of stretching exercises (S) was included, and on the third day, the same routine, but intensified with a maximum static stretching exercises (flexibilizing - F), was used. Main findings. The height reached in the control jump decreased by 0.17%, showing no influence on the performance when the jump happened on the same day, with a time-interval of only 10 minutes (p = 0.903). On the day of the stretching routine, there was a reduction of 3.6% (p = 0.001), and on the third day with flexibilizing, there was a 6.8% reduction (p = 0.001). A comparison of the groups showed no significant differences between them. Conclusions. The jumps after the two stretching routines were significantly lower. Submaximal or maximal (flexibilizing) stretching exercises reduced the explosive force of vertical jumps, although the differences between the training intensities were not significant.

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1 Biomedical Human Kinetics

1 Human Movement

2 2010

2 Dantas E.

2 Nogueira C.

2 de Souza Vale R.

1 Galdino L.

1 de Lima J.

1 de Mello D.

1 dos Santos Galdino L.

1 e Silva Galdino E.

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Acute effect of the proprioceptive neuromuscular facilitation method on vertical jump performance

Effects of Different Intensities of Flexibility Training on Explosive Force