ORCID Profile
0000-0002-4748-6947
Current Organisation
Universidade Federal de Minas Gerais
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Publisher: FapUNIFESP (SciELO)
Date: 2023
DOI: 10.1590/1809-2950/E22012423EN
Abstract: ABSTRACT Given the gap in the literature regarding the peak of oxygen consumption (VO2peak) for adolescents of both sexes, this study aimed to propose an equation to predict the VO2peak in healthy adolescents using the Modified Shuttle Test (MST). This is a cross-sectional study with 84 healthy adolescents between 12 and 18 years old, female and male. The MST is an external paced test, in which the speed increases at each minute. Two MST were performed with at least 30 minutes of rest between them. The test with the longest walked distance was considered for analysis. VO2 was directly monitored by an open circuit spirometry. Mean age was 14.67±1.82 and the walked distance was 864.86±263.48m. Variables included in the prediction equation were walked distance and sex, explaining the VO2peak variability of 53% during MST performance. The prediction equation for VO2peak with the MST was: predicted VO2peak=18.274+(0.18×Distance Walked, meters)+(7.733×Sex) R2=0.53 and p .0001 (sex: 0 for girls, 1 for boys). This MST equation, proposed to predict VO2peak in healthy adolescents of both sexes, can be used as a reference to assess exercise capacity in healthy adolescents and to investigate cardiopulmonary function in adolescents with reduced functional capacity.
Publisher: Wiley
Date: 02-02-2023
DOI: 10.1002/PPUL.26300
Abstract: To evaluate the functional and exercise capacity, lung function, quality of life of children and adolescents with sickle cell anemia (SCA HbSS) and to test the reproducibility of functional capacity tests in this population. Cross‐sectional study with volunteers with SCA Hb‐SS (SCAG), aged 6–18 years matched in age and gender to the control group (CG) with healthy in iduals. Spirometry, 5‐repetition sit‐to‐stand test (5STS‐test), modified shuttle test (MST), and Pediatric Quality of Life Questionnaire (PedsQL) were performed. The reproducibility of 5STS‐test and MST was evaluated: Forty eight volunteers of SCAG and 48 of CG were evaluated. Lung function of SCAG (FVC: 92 ± 15% pred. FEV 1 /FVC: 84 ± 8% pred.) was worse than the CG (104 ± 15% pred. FEV 1 /FVC: 90 ± 6% pred.) p 0.05. SCAG had worse functional capacity registered by distance walked: 576 m (515–672 m) and 5STS‐test: 8 s (7.4–8.9 s) compared with the CG who showed distance walked: 1010 m (887–1219 m) and 5STS‐test: 7 s (7.0–8.1 s), p 0.001. SCAG had worse quality of life compared to CG, p 0.05. The reproducibility of MST (ICC 0.99 (0.98–0.99 IC‐95%)) and 5STS‐test (ICC 0.80 (0.69–0.88) was considered good, p 0.001. Children and adolescents with sickle cell anemia presented worse capacity to walk or run, and to perform sit‐to‐stand test when compared with their control peers. Additionally, they have poorer quality of life. The MST and 5STS‐test showed good reproducibility to be applied in pediatric in iduals with SCA.
Publisher: Springer Science and Business Media LLC
Date: 19-02-2021
DOI: 10.1186/S12890-020-01355-9
Abstract: Inflammation caused by chronic lung disease in childhood may lead to delayed heart rate recovery (HRR) however, there is lack of evidence on HRR in this population. The aim was to assess HRR after functional capacity testing in asthmatic children and adolescents and to compare with severity and disease control. This was a study secondary to a randomized control trial. The modified shuttle test (MST) was performed to assess functional capacity and HRR. This is an externally cadenced test in which the distance walked is the outcome. HRR was assessed after MST and was defined as HR at exercise peak minus HR in the second minute after the end of exercise. Asthma control was assessed by the Asthma Control Test (ACT). Data normality was tested by Shapiro Wilk and the comparison between groups was made by Student’s t test or Mann Whitney test for numerical variables, and by Chi-square test for categorical variables. Statistical significance was considered when p 0.05. SPSS version 20 was used in the analyzes. The s le included 77 patients diagnosed with asthma (asthma group - AG) who were regularly treated for asthma. Control group (CG) consisted of 44 volunteers considered healthy, matched in age and gender to AG. The median age of CG was 12 (10–14) years and in AG 11 (9–13 years) being classified as mild to moderate asthmatic, and 57% of the s le had controlled asthma by ACT. Distance walked in the CG was 952 ± 286 m and AG 799 ± 313 m, p = 0.001. HRR was more efficient in CG (79 ± 15 bpm) compared to AG (69 ± 12 bpm), p = 0.001. The mild (69 ± 12 beats) and severe (72 ± 15 beats) AG presented worse HRR compared to control group (79 ± 15 bpm), p 0.05. Asthmatic children and adolescents have delayed HRR after modified Shuttle test compared to their peers, suggesting that asthma leads to autonomic nervous system imbalance. Trial registration: Registered in Clinical Trials under number NCT02383069 and approved by the Universidade Nove de Julho - UNINOVE Research Ethics Committee, protocol number 738192/2014.
No related grants have been discovered for Fernanda Lanza.