Effect of Lifestyle on Asthma Control in Japanese Patients: Importance of Periodical Exercise and Raw Vegetable Diet

Motoyasu Iikura, Siyan Yi, Yasunori Ichimura, Ai Hori, Shinyu Izumi, Haruhito Sugiyama, Koichiro Kudo, Tetsuya Mizoue and Nobuyuki Kobayashi

PLOS ONE, 2013, vol. 8, issue 7, 1-

Abstract: Background: The avoidance of inhaled allergens or tobacco smoke has been known to have favorable effects on asthma control. However, it remains unclear whether other lifestyle-related factors are also related to asthma control. Therefore, a comprehensive study to examine the associations between various lifestyle factors and asthma control was conducted in Japanese asthmatic patients. Methods: The study subjects included 437 stable asthmatic patients recruited from our outpatient clinic over a one-year period. A written, informed consent was obtained from each participant. Asthma control was assessed using the asthma control test (ACT), and a structured questionnaire was administered to obtain information regarding lifestyle factors, including tobacco smoking, alcohol drinking, physical exercise, and diet. Both bivariate and multivariate analyses were conducted. Results: The proportions of total control (ACT = 25), well controlled (ACT = 20-24), and poorly controlled (ACT 3 metabolic equivalents-h/week), and raw vegetable intake (> 5 units/week) were significantly associated with good asthma control by bivariate analysis. Younger age, periodical exercise, and raw vegetable intake were significantly associated with good asthma control by multiple linear regression analysis. Conclusions: Periodical exercise and raw vegetable intake are associated with good asthma control in Japanese patients.

Date: 2013
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0068290

DOI: 10.1371/journal.pone.0068290

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