Is asthma associated with physical inactivity in children?

Pedersen, Eva Sophie Lunde; Mozún, Rebeca

doi:10.1002/ppul.24740

Cited by 1 publication

(1 citation statement)

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“…In addition to these factors, the time spent in sedentary activities and less physical conditioning, as determined by quantifying the cumulative duration of continuous exercise, has been associated with wheezing during exercise in young children (Lu et al, 2020). The symptoms that limit physical activity are non-specific and may be secondary to conditions other than asthma, such as vocal cord dysfunction, dysfunctional breathing, and physical deconditioning, which makes the investigation more complex (Seear et al, 2005;Pedersen and Mozun, 2020).…”

Section: Introductionmentioning

confidence: 99%

Exercise Limitation in Children and Adolescents With Severe Refractory Asthma: A Lack of Asthma Control?

et al. 2021

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BackgroundPatients with severe refractory asthma (SRA), even when using high doses of multiple controller medications in a regular and appropriate way, can have persistent complaints of exercise limitation.MethodsThis was a cross-sectional study involving patients with SRA (treated with ≥ 800 μg of budesonide or equivalent, with ≥ 80% adherence, appropriate inhaler technique, and comorbidities treated), who presented no signs of a lack of asthma control other than exercise limitation. We also evaluated healthy controls, matched to the patients for sex, age, and body mass index. All participants underwent cardiopulmonary exercise testing (CPET) on a cycle ergometer, maximum exertion being defined as ≥ 85% of the predicted heart rate, with a respiratory exchange ratio ≥ 1.0 for children and ≥ 1.1 for adolescents. Physical deconditioning was defined as oxygen uptake (VO2) < 80% of predicted at peak exercise, without cardiac impairment or ventilatory limitation. Exercise-induced bronchoconstriction (EIB) was defined as a forced expiratory volume in one second ≥ 10% lower than the baseline value at 5, 10, 20, and 30 minutes after CPET.ResultsWe evaluated 20 patients with SRA and 19 controls. In the sample as a whole, the mean age was 12.9 ± 0.4 years. The CPET was considered maximal in all participants. In terms of the peak VO2 (VO2peak), there was no significant difference between the patients and controls, (P = 0.10). Among the patients, we observed isolated EIB in 30%, isolated physical deconditioning in 25%, physical deconditioning accompanied by EIB in 25%, and exercise-induced symptoms not supported by the CPET data in 15%.Conclusion and Clinical RelevancePhysical deconditioning, alone or accompanied by EIB, was the determining factor in reducing exercise tolerance in patients with SRA and was not therefore found to be associated with a lack of asthma control.

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Section: Introductionmentioning

confidence: 99%