Objective: To verify the correlation between the areas evaluated by the Brunet-Lézine and the Bayley III scales of preterm infants up to two years. Methods: The study included 88 children who were divided into 3 groups: Group 1 (1 month to 5 months and 29 days of corrected chronological ages - CCA) with 32 children; Group 2 (6 months to 11 months and 29 days of CCA) with 36 participants; and Group 3 (18 -23 months and 23 days of CCA) with 20 children. The concurrent validity of the Brunet-Lézine scale and the Bayley III scale was calculated using the Pearson correlation or its non-parametric version, the Spearman correlation. Results: Group 1 showed moderate correlation between the developmental quotient for hand-eye and fine motor coordination (DQE), and fine motor score (ρ=0.448; p=0.01). Group 2 had moderate correlation between the developmental quotient for posture and gross motor function (DQP), and the gross motor score (ρ=0.484; p=0.003, between the DQE and fine motor score (r=0.489; p=0.002), and between the developmental quotient for social reactions (DQS) and the socio emotional score (r=0.435; p=0.008). Group 3 showed moderate correlation between the DQP and the gross motor score (ρ=0.468; p=0.037) and strong correlation between developmental quotient for language (DQL) and the score of language (r=0.890; p<0.001). Conclusions: The Brunet-Lézine scale showed strong correlation with the Bayley III scale regarding the language domain in Group 3, suggesting its validity to assess the language of children aged between 18 and 24 months.

Introduction: Electronic devices have been used by increasingly younger people, leading researchers to investigate the impact of these technologies on the health of developing children. Objective: To investigate the impact of smartphone use on the postural control of Brazilian children 6 to 9 years old.Methods: This cross-sectional study was conducted with 278 children from public schools in Goiânia (Goiás, Brazil). The children were assessed in an orthostatic posture with the computerized baropodometry system in three conditions: eyes open, eyes closed, and using a free smartphone application. Results: The children were 8.36 years old on average, 82% of them were well-nourished, and had a daily mean screen time of 2 hours. The postural control analyses revealed that the children made greater postural adjustments with their eyes closed than with them open. When using the smartphone application, the postural adjustments were similar to those with eyes closed. In the stabilometry, the postural displacements made by the children behaved similarly to the static assessment only in total feet surface area. Conclusion: Smartphone use and absence of visual stimulus in the orthostatic position caused postural instability in children 6 to 9 years old. These findings can contribute to understanding the impact of technologies on children’s development of balance in daily tasks.

Back pain is common in adolescents as a result of their typical daily activities. There is a critical need for developing instruments that can assess the adolescents’ knowledge of proper posture, because adequate postural habits are essential for preventing back pain and facilitating physical well-being. Unfortunately, there is insufficient understanding about appropriate back health in the general public, even though this knowledge is decisive in the development of physical skills and attainment of health literacy. Furthermore, relevant substantive literature is scarce. Therefore, the proposed systematic review aims to identify instruments that are used for assessing knowledge of back health in adolescents. Relevant search terms and descriptors will be combined, and searches will be carried out in a uniform sequence within the PubMed, Embase, CINAHL, and Cochrane Library databases. Eligible articles must present data on the assessment of the adolescents’ knowledge of back health and describe the applied instrumentation. Articles will be selected by two reviewers independently; all disagreements will be resolved by a third reviewer. Mendeley and the Rayyan software will be used for the systematic review, and the checklist proposed by Brink and Louw will be used to verify the methodological quality of the included studies. Our findings may confirm the relevance of constructing and validating back health instruments for use in Brazil and other countries.

Background: Patients undergone hemodialysis (HD) suffer with energy-protein malnutrition, uremic myopathy and protein catabolism reducing their functional capacity, tolerance to exercise and aspects related to quality of life. Objective: The aim of this study was to evaluate the effects of the two protocols of inspiratory muscle training (IMT) on muscle strength, pulmonary function and related-health quality of life on male HD patients. Methods: Maximal inspiratory pressure (MIP) and maximal expiratory pressure (MEP), peak expiratory flow (PEF), forced expiratory volume in first second (FEV 1 ), forced vital capacity (FVC) and the FEV 1 /FVC ratio and quality of life were evaluated pre and post six months of IMT in HD patients. IMT was performed by one group using a specific training (Power breathe) device (T-IMT, n=19) and by the other with incentive spirometry (I-IMT, n= 15). Results: Following the inspiratory training, muscle strength improved in both groups. The group that used incentive spirometry had increments in MIP larger (39.8%, p<0.001) than the group that trained with the specific training device (28.3%, p=0.001). The KDQOL-SF dimensions showed significant difference in the T-IMT group in cognitive function (p=0.03), sexual function (p=0.009) and social function dimensions (p=0.04) and in the I-IMT group in the physical function dimension (p=0.03). Conclusion: It was proved that IMT improved muscle strength and I-IMT promoted increments significantly larger in MIP. Aspects of health-related quality of life of HD male patients improved significantly with T-IMT (sexual, social and cognitive functions), while I-IMT ameliorated only physical function.