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Gazzetta Medica Italiana Archivio per le Scienze Mediche 2011 August;170(4):251-7

Copyright © 2011 EDIZIONI MINERVA MEDICA

language: English

Urinary concentration of hydroxyproline, electromyographic activity and electrogoniometry in sedentary youths submitted to stretching and neural mobilization

Mafra O. R., Neves C. E., Silva E. B., Cader S. A., Lopes R. S. D., Bertoni J. G. B., Dantas E. H. M.

Laboratory of Motor Science (LABI HM), Federal University of Rio de Janeiro, Rio de Janeiro, Brazil


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Aim. This study sought to compare the level of hydroxyproline (HP) and the electric signal and the amplitude of the movements in sedentary youths submitted to stretching and neural mobilization programs.
Methods. The sample consisted of sedentary students divided into three groups: a neural mobilization group (NMG; n=15; age=22; 3 years; BMI=24.75;3.09), a static stretching group (SSG; n=15; age=23; 4 years; BMI=25; 4.33) and a control group (CG; n=15; age: 24; 4 years; BMI: 23.91; 3.09). Nordim (HP), electromyography – EMG(electric activity on the femoral biceps) and electrogoniometer (angle of waist) methods were used for this evaluation. Static stretching was performed by means of passive distension over six seconds, and neural mobilization was conducted in a direct, oscillatory and straining manner for 60 seconds. The p≤0.05 level was adopted for statistical significance. Satisfactory results were found for HP: intra-group analysis, on the NMG (@= 7.38 mg/24h; P=0.0001) and on the SSG (@= 3.47 mg/24h; P=0.002) and for the inter-group post-test analysis, on the NMG vs. SSG (@= 4.37 mg/24h; P=0.006) and on the NMG vs. CG (@=7.2 mg/24h; P=0.0001). For electrogoniometry, better results were found: for the intra-group analysis, on the NMG (@=17.35; P=0.0001) and on the SSG (@=9.81; P=0.005) and for the inter-group post-test, on the NMG vs. SSG (@=8.96; P=0.027) and on NMG vs. CG (@=16.09; P=0.0001).
Results. A significant decrease was observed for the electromyography: for the intra-group analysis, on the NMG (@=-10.99; P=0.001) and on the SSG (@=-7.35; P=0.033) and for the inter-group analysis, on the NMG vs. CG (@=-9.89; P=0.033).
Conclusion. It may be concluded that both trainings obtained satisfactory results, increasing the level of HP and the amplitude of movement and reducing muscular electric activity. However, neural mobilization was observed to be more effective than the other modalities.

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