Results demonstrate a reduction in the IME in asthmatic adolescents with overweight and obesity, indicating an association between asthma, nutritional status and respiratory muscle function.

BACKGROUND: Pulmonary changes that occur in cystic fibrosis may influence inspiratory muscle strength and endurance. We evaluated inspiratory muscle strength and endurance in children and adolescents with cystic fibrosis in comparison with healthy subjects. METHODS: This is a crosssectional observational study with subjects with cystic fibrosis and paired healthy individuals, age 6 -18 y. Spirometry, impulse oscillometry, plethysmography, manovacuometry, and a protocol of inspiratory muscle endurance were performed. RESULTS: Subjects with cystic fibrosis (n ‫؍‬ 34) had higher maximum percent-of-predicted inspiratory pressure (P Imax ) than healthy (n ‫؍‬ 68) subjects (118.5 ؎ 25.8% vs 105.8 ؎ 18.0%) and no significant difference in endurance (60.9 ؎ 13.3% vs 65.3 ؎ 12.3%). When restricting the analysis to subjects without Pseudomonas aeruginosa colonization and with FEV 1 > 80%, P Imax values were significantly higher, and inspiratory muscle endurance was lower, in comparison with the control group. P Imax correlated significantly with FVC (r ‫؍‬ 0.44, P ‫؍‬ .02) and FEV 1 (r ‫؍‬ 0.41, P ‫؍‬ .02), whereas endurance correlated better with total airway resistance (r ‫؍‬ 0.35, P ‫؍‬ .045) and with central airway resistance (r ‫؍‬ 0.48, P ‫؍‬ .004). CONCLUSIONS: Children and adolescents with cystic fibrosis with no colonization by P. aeruginosa and normal lung function present increased inspiratory muscle strength and decreased endurance compared with healthy individuals, indicating that changes in the respiratory muscle function seem to be distinctly associated with pulmonary involvement. Strength was related to pulmonary function parameters, whereas endurance was associated with airway resistance.

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Objective To describe the existing early mobilization protocols in pediatric intensive care units. Methods A systematic literature review was performed using the databases MEDLINE ® , Embase, SciELO, LILACS and PeDRO, without restrictions of date and language. Observational and randomized and nonrandomized clinical trials that described an early mobilization program in patients aged between 29 days and 18 years admitted to the pediatric intensive care unit were included. The methodological quality of the studies was evaluated using the Newcastle-Ottawa Scale, Methodological Index for Non-Randomized Studies and the Cochrane Collaboration. Results A total of 8,663 studies were identified, of which 6 were included in this review. Three studies described the implementation of an early mobilization program, including activities such as progressive passive mobilization, positioning, and discussion of mobilization goals with the team, in addition to contraindications and interruption criteria. Cycle ergometer and virtual reality games were also used as resources for mobilization. Four studies considered the importance of the participation of the multidisciplinary team in the implementation of early mobilization protocols. Conclusion In general, early mobilization protocols are based on individualized interventions, depending on the child's development. In addition, the use of a cycle ergometer may be feasible and safe in this population. The implementation of institutional and multidisciplinary protocols may contribute to the use of early mobilization in pediatric intensive care units; however, studies demonstrating the efficacy of such intervention are needed.

Objective The primary objective of this study was to identify the occurrence and factors associated with intensive care unit (ICU)–acquired weakness (ICUAW) in patients with COVID-19. Secondarily, we monitored the evolution of muscle strength and mobility among patients with ICUAW and patients without ICUAW and the association of these variables with length of stay, mechanical ventilation (MV), and other clinical variables. Methods In this prospective observational study, patients admitted to the ICU for >72 h with COVID-19 were evaluated for muscle strength and mobility at 3 times: when being weaned from ventilatory support, discharged from the ICU, and discharged from the hospital. Risk factors for ICUAW were monitored. Results The occurrences of ICUAW at the 3 times evaluated among the 75 patients included were 52%, 38%, and 13%. The length of the ICU stay (29.5 [16.3–42.5] versus 11 [6.5–16] days; P ≤ .001), the length of the hospital stay (43.5 [22.8–55.3] versus 16 [12.5–24] days; P ≤ .001) and time on MV (25.5 [13.8–41.3] versus 10 [5–22.5] days; P ≤ .001) were greater in patients with ICUAW. Muscle strength and mobility were lower at all times assessed in patients with ICUAW (P < .05). Bed rest time for all patients (relative risk = 1.14; 95% CI = 1.02–1.28; P = .03 per week) and use of corticosteroids (relative risk = 1.01; 95% CI = 1.00–1.03; P = .01 per day) for those who required MV were factors independently associated with ICUAW. Muscle strength was found to have a positive correlation with mobility and a negative correlation with lengths of stay in the ICU and hospital and time on MV. Conclusions The occurrence of ICUAW was high upon patients’ awakening in the ICU but decreases throughout hospitalization; however, strength and mobility remained compromised at hospital discharge. Bed rest time and use of corticosteroids (for those who needed MV) were factors independently associated with ICUAW in patients with COVID-19.