Avaliação da capacidade de exercício em adolescentes asmáticos e saudáveis

Abstract

Objectives: To compare the physical performance and responses obtained in the six-minute walking test (6MWT) and the six-minute step test (6MST) between asthmatic and healthy adolescents; and to investigate the relationship between the responses obtained in the tests and the body mass index (BMI), physical activity level and spirometric variables. Methods: Nineteen asthmatic adolescents (AG) and 19 healthy adolescents (HG) of both sexes, aged between 11 and 15 years, were assessed by means of spirometry, the 6MWT and the 6MST, and their physical activity levels were quantified using the International Physical Activity Questionnaire (IPAQ). Results: The AG had poorer physical performance, lower heart rate (HR) and greater lower-limb (LL) fatigue in the 6MST. In the 6MWT, the AG had positive correlations between walked distance (WD) and duration of intense activity, and between HR and BMI, whereas the HG had positive correlations between WD and HR and between WD and respiratory rate (RR). In the 6MST, the AG showed positive correlations between RR and maximum voluntary ventilation (MVV) and between duration of moderate activity and physical performance. The AG also showed negative correlations between physical performance in the 6MST and BMI, and between sensation of dyspnea and duration of walking. Also in the 6MST, the HG showed positive correlations between RR and MVV, and between BMI and LL fatigue (p≤0.05). Conclusion:The 6MST demonstrated differences in exercise capacity between the asthmatic and healthy individuals. Furthermore, the physical performance and responses obtained in the tests were correlated with the MVV, BMI and physical activity level.Key words: asthma; spirometry; muscle fatigue; dyspnea. No TC6, houve correlação positiva no GA da distância percorrida (DP) com o tempo de atividade intensa e da FC com o IMC e, no GS, da DP com a FC e com a frequência respiratória (FR). No TD6, houve correlação positiva no GA da ventilação voluntária máxima (VVM) com a FR; do tempo de atividade moderada com o TD6-T; além de correlação negativa do TD6-T com o IMC e da dispneia com o tempo de caminhada; no GS, correlações positivas da VVM com a FR e da fadiga de MMII com IMC (p≤0,05). Conclusão: O TD6 demonstrou diferença na capacidade para o exercício entre asmáticos e saudáveis. Além disso, o desempenho físico e as respostas obtidas nos testes correlacionaram-se com os valores de VVM, IMC e nível de atividade física. Resumo

Association between quality of life, severity of asthma, sleep disorders and exercise capacity in children with asthma: a cross-sectional study

“…We considered the similar study of Basso et al 7 to estimate the sample of the present study. Thus, in using a sample calculation for a correlation of −0.54 (between PAQLQ and Borg Scale), it was determined that a sample size of 45 patients would be enough to detect a correlation with a power of 80%, a significance level of 0.05, and coefficient of determination of 0.15.…”

“…Children who had airway infections or acute episodes of asthma during the previous 3 weeks prior to the assessments were also not included. 7 All legal guardians gave their written informed consent. Children who declined to participate were excluded from this study.…”

“…4,5 Assessing the quality of life (QoL) of children and adolescents with asthma is fundamental given that severe or uncontrolled asthma impairs the quality of sleep, school performance and involvement in physical activities, all of which contribute to reducing QoL. 6 A study with adolescents with asthma 7 highlighted the six-minute step test (6MST) as an option for assessing exercise capacity because it reflects the discomfort caused by asthma in the practice of daily life activities. Authors of this study verified that responses to the 6MST such as dyspnea and fatigue of the lower limbs are related to the QoL of this population (11---15 years old).…”

Respostas Cardiorrespiratórias Durante Dois Testes De Exercício Submáximos Em Participantes De Um Programa De Reabilitação Cardíaca: Resultados Preliminares

“…Estudo prévio realizado entre adolescentes asmáticos e saudáveis visando comparar o desempenho físico e as respostas obtidas no TC6m e no TD6 obteve, como um dos resultados, menores valores de FC e maiores valores de SFMMII no grupo asmático durante o TD6. Os autores deste estudo consideram que a resposta mais elevada da FC e da SFMMII, deve-se ao fato deste teste provocar maior trabalho em grupamentos musculares contra a gravidade, não utilizados frequentemente na prática de atividade de vida diária, tornando as demandas metabólicas e ventilatórias mais intensas que o TC6m 24 No entanto, é importante ressaltar que no nosso estudo, o teste foi realizado em apenas 4 minutos, dessa forma infere-se que este tempo possa ter sido insuficiente para provocar alterações significativas nesta variável, já que se tratavam de indivíduos com função pulmonar normal.…”

Virtual System can be considered interchangeable with shuttle run in healthy children: a cross-sectional study

“…The main advantage of studying healthy children is the physiological condition of the cardiac system in response to a stress test in healthy children, providing knowledge of heart rate intensity with the virtual system to help in exercise prescription, since it is known that children with heart disease 54 and chronic respiratory diseases 55,56 interrupt exercise early with a reduced HR, which precludes proper evaluation of their cardiac response during SRT and VS.…”