TABLE 1

Association between European Community Respiratory Health Survey (ECRHS) II vigorous activity status, frequency and duration, change in vigorous activity status and ECRHS III current asthma, asthma-like symptoms, and bronchodilator reversibility in middle-aged adults

Current asthma at ECRHS III n (%)Risk of current asthma, adjusted analyses# (95% CI)More than three asthma-like symptoms at ECRHS III (%)Risk of asthma-like symptoms, adjusted (95% CI)#Bronchodilator reversibility present at ECRHS III n (%)Risk of bronchodilator reversibility, adjusted analyses# (95% CI)
Subjects n312927573057269524512148
Activity status
 Not vigorously active182 (8.9)1.0054 (2.8)1.0038 (2.5)1.00
 Vigorously active102 (8.4)0.96 (0.75–1.23)22 (1.9)0.71 (0.42–1.18)21 (2.2)0.82 (0.46–1.47)
Frequency of vigorous activity
 Once a month or less120 (9.1)1.0036 (2.8)1.0025 (2.6)1.00
 13 times per week120 (7.7)0.94 (0.73–1.22)31 (2.1)0.78 (0.48–1.28)29 (2.4)0.86 (0.49–1.50)
 ≥4 times per week45 (10.7)1.14 (0.82–1.63)10 (2.5)0.93 (0.45–1.93)6 (1.9)0.67 (0.25–1.76)
Amount of vigorous activity
 030 min per week132 (9.8)1.0039 (3.0)1.0028 (2.8)1.00
 13 h per week105 (7.4)0.82 (0.63–1.07)30 (2.2)0.79 (0.48–1.30)24 (2.2)0.74 (0.42–1.31)
 ≥4 h per week47 (9.5)1.00 (0.71–1.42)7 (1.5)0.49 (0.21–1.17)7 (1.8)0.66 (0.27–1.61)
Change in vigorous activity from ECRHS II to ECRHS III
 Consistently not vigorously active123 (9.1)1.0043 (3.2)1.0029 (2.8)1.00
 Becoming vigorously inactive54 (8.7)1.00 (0.70–1.43)11 (1.9)0.83 (0.34–1.35)9 (1.9)0.96 (0.44–2.08)
 Becoming vigorously active41 (9.1)1.11 (0.80–1.54)11 (2.4)0.68 (0.42–1.61)10 (2.8)0.83 (0.39–1.78)
 Consistently not vigorously active60 (8.5)1.01 (0.73–1.41)11 (1.6)0.50 (0.24–1.03)11 (1.9)0.64 (0.29–1.42)

#: adjusted for sex, ECRHS II age, smoking status, occupation, education and body mass index.