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Table 1 Summary of methods and demographics of the study target groups

From: Asthma, allergies and respiratory symptoms in different activity groups of swimmers exercising in swimming halls

Study
method
Swimmer population, N Gender
F/M
Mean age
(yr)
Distance swam per session (meters) Stay at swimming pool area
(minutes)
Asthma
Prevalence
%
Allergy
Prevalence
%
Respiratory symptoms
Prevalence
%
Questionnaire 1118 Swimmers:
251 Occasional
734 Fitness
133 Competitive
650/468
169/82
426/308
55/78
43 (19)
39 (19)
48 (16)
20 (12)
1215
543
993
3418
63
60
56
117
9
12
8
13
23
23
22
28
18
13
16
44
Spirometry 130 Competitive 58 /72 17 (3) 5600 120 20 31 45