Demographic and clinical parameters of the study population.
| Characteristics | Non-EIB (n=22) | EIB (n=20) | p-value |
| Age years | 12.3±3.0 | 12.3±3.4 | 0.96 |
| Height cm | 153.2±19.4 | 153.9±19.3 | 0.91 |
| Weight kg | 48.8±21.7 | 47.0±16.2 | 0.77 |
| Male | 87 (34) | 80 (41) | 0.55 |
| Inhalation allergies | 83 (39) | 70 (47) | 0.34 |
| ICS usage | 52 (51) | 75 (44) | 0.13 |
| FEV1 % predicted at baseline | 93±10 | 75±21 | <0.01 |
| Peak amplitude EMG at baseline μV | 1.72 (0.97–2.62) | 1.99 (1.20–2.91) | 0.45 |
| Peak width at baseline s | 3.35 (2.72–3.68) | 2.98 (2.05–3.41) | 0.34 |
| Area under curve at baseline μV·s | 2.63 (1.43–3.90) | 3.32 (1.64–6.47) | 0.30 |
| Tonic activity at baseline μV | 1.62 (1.39–2.04) | 1.92 (1.31–2.40) | 0.48 |
Data are presented as mean±sd, n (%) or median (interquartile range), unless otherwise stated. EIB: exercise-induced bronchoconstriction; ICS: inhaled corticosteroid; FEV1: forced expiratory volume in 1 s. Bold indicates statistical significance.