Comparison of the physiological responses induced by different pediatric exercise field tests in children.

OBJECTIVE: This study aimed to compare the physiological responses induced by the modified shuttle walk test (MSWT), the 6-minute walk test (6MWT), and the pediatric Glittre activities of daily living test for children (TGlittre-P) in healthy children. METHOD: This was an analytical observational cross-sectional study. All subjects underwent an anthropometric evaluation, pulmonary function test, TGlittre-P, 6MWT, and MSWT using a portable gas analyzer. Each test was conducted on the same day, and a maximum period of 15 days was considered for completion of the 3 days of data collection. RESULTS: Overall, 24 subjects were included (mean age, 9.78 ± 1.27 years). The peak oxygen consumption (VO2peak ) during the MSWT (1409.94 ± 285.13 mL/kg/min) was significantly higher than that during the TGlittre-P (982.19 ± 205.95 mL/kg/min) and 6MWT (982.85 ± 257.09 mL/kg/min) (P < .001 for both). There was no difference in VO2peak  as well as most of the physiological variables between the 6MWT and TGlittre-P (P = .987). The MSWT VO2peak correlated with the 6MWT VO2peak (r = 0.67; P = .00) and the TGlittre-P VO2peak (r = 0.43; P = .04). The VO2peak values achieved in the 6MWT and TGlittre-P were also correlated (r = 0.68; P = .00). Unlike in the MSWT, in which the physiological measurements show an incremental response, the VO2 , heart rate, minute ventilation, and respiratory exchange ratio were stabilized in the TGlittre-P and 6MWT. CONCLUSION: The TGlittre-P and 6MWT showed similar physiological responses and required less metabolic, respiratory, and cardiovascular overload than the MSWT. The performance measures and VO2peak values obtained in the three tests were correlated.

Capacidade de exercício e função pulmonar de escolares com história de displasia broncopulmonar: revisão sistemática / Exercise capacity and pulmonary function of school age children with a history of bronchopulmonary dysplasia: a systematic review

A displasia broncopulmonar (DBP) é uma doença respiratória crônica decorrente da necessidade de oxigênio e/ou ventilação mecânica no período neonatal. A lesão pulmonar decorrente da DBP pode levar a alterações na função pulmonar, com limitação do fluxo e aumento da resistência das vias aéreas, que perduram durante a infância e adolescência. Objetivo: realizar uma revisão sistemática de estudos que avaliaram a função pulmonar e a capacidade de exercício de escolares com DBP. Método: realizadas buscas sistematizadas em três bases de dados eletrônicas SciELO, PEDro e MEDLINE viaOvid, sendo selecionados artigos publicados até janeiro de 2014 que avaliaram tanto a função pulmonar como a capacidade de exercício em escolares com DBP. Resultados: através das estratégias de busca foram encontrados 376 títulos relacionados ao tema. Após análise dos critérios de inclusão, apenas cinco trabalhos foram selecionados para compor amostra final. Conclusões: crianças com história de DBP apresentam variável obstrução ao fluxo aéreo em idade escolar e podem atingir menores valores de consumo máximo de oxigênio, volume minuto e volume corrente durante o exercicio. Ainda assim, a função pulmonar parece não influenciar a capacidade de exercício nesta população...

Bronchopulmonary dysplasia (BPD) is a chronic respiratory disease accused by the need of oxygen and/ or mechanical ventilation in the neonatal period. The resulting lung injury of BPD may lead to changes in lung function, with flow limitation and increased airway resistance, which may persist throughout childhood and adolescence to adulthood. Objective: conduct a systematic review studies that evaluated lung function and exercise capacity in school-age children with BPD. Method: we performed systematic searches of three electronic databases Scielo, PEDro and MEDLINE Ovid, being selected articles published up to january 2014. That assessed pulmonary function and exercise capacity in school-age children with bronchopulmonary dysplasia. Results: through the search strategies 376 titles related to the topic were found, after analysis of the inclusion criteria, only five were selected to compose the final sample. Conclusion: children with a history of BPD have variable airflow obstruction at school age and can reach lower maximal values of oxygen, minute volume and tidal volume during exercise. Still, there is no influence lung function on exercise capacity in this population...