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Vol. 23. Issue 1.
Pages 12-18 (01 January 2019)
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Vol. 23. Issue 1.
Pages 12-18 (01 January 2019)
Original Research
DOI: 10.1016/j.bjpt.2018.08.010
Association between quality of life, severity of asthma, sleep disorders and exercise capacity in children with asthma: a cross-sectional study
Priscilla Rique Furtado, Álvaro Campos Cavalcanti Maciel, Renata Ramos Tomaz Barbosa, Ana Aline Marcelino da Silva, Diana Amélia de Freitas, Karla Morganna Pereira Pinto de Mendonça
Corresponding author

Corresponding author at: Avenida Senador Salgado Filho, 3000 – Lagoa Nova, CEP 59072-970 Natal, RN, Brazil.
Postgraduate Studies in Physiotherapy Department, Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN, Brazil

  • Better QoL of children with asthma is associated with a lower asthma severity.

  • Better QoL is associated with a good sleep quality.

  • Better QoL of children with asthma associated with a lower dyspnea after exercise.

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Figures (1)
Tables (4)
Table 1. Characterization of the children.
Table 2. Mean (SD) and median (min–max) for PAQLQ, SDSC scores and 6MST variables.
Table 3. Comparison between PAQLQ scores and the groups of asthma severity, asthma control and the presence or not of sleep breathing disorder.
Table 4. Correlation matrix between the PAQLQ scores and spirometric, 6-min step test and SDSC variables.
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To assess the association between quality of life, asthma severity, sleep disorders and exercise capacity in children with asthma.


We evaluated 45 children with asthma of both sexes aged between 7 and 12 years, diagnosed by a pediatrician/pulmonologist and classified according to the IV Brazilian Guidelines for Asthma Management: severity (intermittent/mild and moderate/severe) and control (controlled, partially controlled and uncontrolled). Quality of life (QoL), presence of sleep disorders and exercise capacity were respectively assessed using the following instruments: Pediatric Asthma Quality of Life Questionnaire (PAQLQ); Sleep Disturbance Scale for Children (SDSC); and six-minute step test (6MST).


Intermittent/mild and moderate/severe asthma were observed in 51.1% and 48.9% of the children evaluated, respectively. Only 8.89% of the sample had uncontrolled asthma. In the regression model, a better QoL was observed in children with lower asthma severity, lower SDSC total score and lower levels of dyspnea induced by the 6MST (β=−0.395, p=0.003; β=−0.338, p=0.011; β=−0.352, p=0.008; respectively). These factors explained 31% of the PAQLQ total score variation. Other variables (such as cardiorespiratory variables, spirometry, asthma control and number of steps in 6MST) did not predict quality of life.


Lower asthma severity (intermittent/mild), fewer symptoms of sleep disorder, and lower exercise-induced dyspnea predicts better quality of life in children with asthma.



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