Revista Brasileira de Medicina do Esporte
Print version ISSN 1517-8692
CONCEICAO, Mario Cezar de Souza Costa et al. Chronic effects of static flexibilizing on neuromuscular parameters in young adults. Rev Bras Med Esporte [online]. 2012, vol.18, n.3, pp. 181-185. ISSN 1517-8692. http://dx.doi.org/10.1590/S1517-86922012000300009.
INTRODUCTION: Training includes, among other physical qualities, flexibility and strength. Thus, knowing the mutual inter-relationships between these physical qualities would increase the effectiveness of training. OBJECTIVE: The purpose of this study was to verify changes in neuromuscular parameters in a static flexibilizing program, after 12 weeks of intervention. METHODS: 70 cadets, mean age of 17.03 ± 1.14 years, participated in the present survey, were randomly selected and equally divided into two groups: experimental group (EG, n = 35) and control group (CG, n = 35). Strength levels were assessed by 1RM static contraction in horizontal shoulder flexion and extension (HSF/ HSE) and lumbar spine extension (LSE). Flexibility was assessed by the goniometry LABIFIE protocol in shoulder horizontal flexion and extension (SHF /SHE) and lumbar spine flexion (LSF). The urinary hydroxyproline concentration collected by the Nordin method was performed through HPROLI 2h protocol. RESULTS: ANOVA for repeated measures evidenced significant increase for SHF (Δ% = 3.9%, p = 0.001), SHE (Δ% = 21.1%, p = 0.001), LSF (Δ% = 73.8%, p = 0.001), SHF (Δ% = 20.4%, p = 0.001) and FELS (Δ% = 4.0%, p = 0.008) from pre to post-test. The hydroxyproline levels did not change significantly. Concerning intergroup comparisons, significant differences were found for SHF (p = 0.016), SHE (p = 0.005), LSF (p = 0.004), SHF (p = 0.001) and FELS (p = 0.007). The power of the experiment observed was of 86% for an estimated beta of 0.14. CONCLUSION: The static flexibilizing was able to improve both flexibility and strength.
Keywords : articular range of motion; physical education and training; hydroxyproline; muscle strength.