Asthma and Asthma Medication Are Common among Recreational Athletes Participating in Endurance Sport Competitions

Table 4

Factors associated with self-reported asthma in the pooled study population of 10,076 Swedish competitive recreational athletes.

	Unadjusted			Adjusted
	OR	95% CI	value	OR	95% CI	value
Female sex^1	1.56	1.37–1.77	<0.001	1.64	1.40–1.92	<0.001
Age >42 years^2	0.87	0.77–0.98	0.022	1.02	0.88–1.19	0.766
Allergic rhinitis	5.53	4.84–6.33	<0.001	5.25	4.48–6.16	<0.001
History of eczema	1.85	1.64–2.12	<0.001	1.24	1.07–1.46	0.004
Family history of asthma	3.39	2.97–3.87	<0.001	2.76	2.36–3.22	<0.001
Training^3
3–4 h	1.09	0.91–1.32	0.443	1.08	0.87–1.35	0.718
4 h–5 h 50 min	1.14	0.95–1.37	0.277	1.13	0.91–1.40	0.503
>5 h 50 min	1.47	1.23–1.76	<0.001	1.48	1.20–1.86	<0.001
Sport^4
Swimming	1.04	0.70–1.50	0.921	0.75	0.43–1.25	0.296
Cycling	1.34	1.14–1.56	<0.001	1.25	1.03–1.51	0.024
Skiing	1.13	0.93–1.35	0.158	1.16	0.92–1.45	0.204
Others	1.22	0.96–1.54	0.095	0.91	0.67–1.23	0.562

¹Reference: “male.” ²Reference: “age < 42 years.” ³Training/week categorized into quartiles; reference quartile 1: <3 h/wk. ⁴Reference: “running.” Significant values are in bold.