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Outcomes

Seasonal changes influence the improvement in asthma symptoms by exercise training in subjects with asthma*Footnote*

, PT, PhD, , PT, PhD, , MD, PhD, , MD, PhD, , MD, PhD, , MD, PhD & , PT, PhD show all
Pages 674-679 | Received 29 Jan 2018, Accepted 30 May 2018, Published online: 05 Oct 2018
 

Abstract

Objective: To investigate whether patients with moderate-to-severe asthma who commence an exercise training program in winter or summer show differences in exercise capacity, health-related quality of life (HRQoL) and asthma symptoms. Methods: Forty-two consecutive subjects visiting the outpatient clinic were enrolled in the 17-week rehabilitation program. One group of patients received the intervention from summer to winter (SWG, n = 21), and the other group participated from winter to summer (WSG, n = 21). Before and after the exercise training program, all patients were evaluated by cardiopulmonary exercise test, pulmonary function test, quality of life questionnaire and a daily diary that evaluated clinical asthma symptoms. Results: After the training period, both groups improved similarly in health-related quality of life (HRQoL) and aerobic capacity. The WSG patients had a greater increase that those in the SWG in asthma symptom-free days (p < 0.05). Conclusions: Our results indicate that seasonal variations affect the improvement in asthma symptoms after an exercise training program but have no effect on health-related quality of life, exercise capacity or pulmonary function.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This study was supported by FAPESP (2009/53817–9) and CNPQ (311443/2014–1).

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