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Revista Andaluza de Medicina del Deporte

versão On-line ISSN 2172-5063versão impressa ISSN 1888-7546

Resumo

BIGLIASSI, M. et al. Effects of a sensory strategy in an isometric muscular endurance task. Rev Andal Med Deporte [online]. 2014, vol.7, n.2, pp.55-59. ISSN 2172-5063.

Objetive: The use of music and video in exercise domain might act in parallel over other physiological signals and its central interpretation may change the rate of perceived exertion and subsequently the final performance. The purpose of this study was to examine the effects of sensorial modulation in an isometric muscular endurance task. Method: Ten volunteers have performed three tests, in which they had to keep the dominant arm abduction until exhaustion whilst the following variables: total time, rate of perceived exertion (RPE),median frequency (MF) and root mean square (RMS) were monitored. Each subject has performed a control (CO), deprivation (DP) and stimuli (SC) condition. Analysis of variance (ANOVA) one-way was applied followed by post-hoc Scheffé test. The smallest worthwhile change was used to provide a qualitative analysis of performance. Results: No significant differences were found in muscular activity between conditions and performance (p > 0.05). The slope of RPE was significant higher to DP compared to SC (4.3 + 0.77 a.u. vs 3.53 + 0.46 a.u., p < 0.05; respectively). Furthermore, a higher probability of improvement for time to exhaustion was found to SC compared to DP (97 %) and CO (92 %), conversely the opposite outcome was demonstrated to DP compared to CO (59 %). Conclusion: It was concluded that a sensory strategy was capable to modulate RPE and performance.

Palavras-chave : Sensory feedback; Music; Motor activity.

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