Helio Cabral

Abstract Prolonged intensive care unit (ICU) hospitalization due to acute respiratory distress syndrome results in reduced muscle strength and increased fatigability. This study investigated the central and peripheral neuromuscular mechanisms underlying these impairments in sixty COVID-19 patients up to 12 months post-ICU discharge.

Abstract Previous studies suggest that low-dimensional control underlies motor unit activity, with low-frequency oscillations in common synaptic inputs serving as the primary determinant of muscle force production. In this study, we used principal component analysis (PCA) and factor analysis (FA) to investigate the relationship between low-dimensional motor unit components and force oscillations during repetitive isometric tasks with similar force profiles.

Abstract Purpose: Recent research has explored region-specific responses within the biceps femoris long head. However, evidence on regional muscle activation remains controversial, primarily because information derived solely from surface electromyograms (sEMG) amplitude does not necessarily provide an accurate estimate of neural drive to the muscle.