ACUTE EFFECT OF FLEXIBILIZING BY PROPRIOCEPTIVE NEUROMUSCULAR FACILITATION ON STRENGTH ENDURANCE

Abstract

The objective of this study is to verify the acute effect on the decrease of muscular force endurance after the execution of Proprioceptive Neuromuscular Facilitation exercises (PNF). Methodology: 20 men, 23,1±5,2 of age who underwent 14 weeks of training participated in the study. The 1RM was used to verify the maximum load in the bench press exercise where a value of 75% was calculated after the exercise. After the test, the subjects were divided into two groups: Experimental Group (EG) and Control Group (CG). The EG executed the maximum number of repetitions with 75% of the maximum load obtained in the 1RM test and the PNF exercise was executed after an interval of 10min, followed by a new series with the same load and a new interval of 10min was given before the third trial. The CG executed the same procedure, except for the execution of the PNF exercise. Results: A mean of 10,6±0,9 repetitions in the first series, 9,0±0,9 in the second series and 8,8±1,0 in the third series was observed in the EG, showing a significant difference (p=0,0001<0,05). The (CG) reached a mean of 12,5±1,2 repetitions in the first series, 11,6±1,0 in the second series and 10,8±0,8 in the third series, showing no significant difference (p=0,0574>0,05); Conclusion: when the PNF exercises are executed before strength training, this causes a decrease in strength endurance.