Espectroscopia de infravermelho próximo na investigação dos estados de repouso e ativação muscular do assoalho pélvico de mulheres adultas jovens: um estudo transversal

Abstract

Near-infrared spectroscopy has shown to be a promising technology for assessing muscle oxygenation. This cross-sectional study investigated the behavior of pelvic floor muscle oxygenation variables in young adult women, comparing resting and activated states. Thirty-eight participants were evaluated, divided into a control group (CG) and an activated group (AG), using the Humon Hex equipment. The variables analyzed included mean oxygenation, amplitude, and standard deviation. The results indicated that muscle activation significantly influenced the oxygenation of the bulbospongiosus and superficial transverse muscles, with the latter presenting more balanced patterns. The Sustained Maximum Voluntary Contraction was the moment of greatest change in oxygenation, with greater response variability in the AG compared to the CG. The study suggests that near-infrared spectroscopy may be a viable and less invasive alternative for assessing pelvic floor muscle activity, especially in patients with contraindications for intracavitary methods. These findings open new perspectives for the investigation of pelvic muscle metabolism and potential clinical application in the rehabilitation of dysfunctions.