Lipin I, Gur I, Amitai Y, Amirav I, Godfrey S
Thorax. 1984 Aug;39(8):594-6. doi: 10.1136/thx.39.8.594.
To evaluate the effect of positive ionisation of inspired air on bronchial reactivity, 12 asthmatic children were twice challenged by exercise in random order. During one test positively ionised air (5-10 X 10(5) ions/cm) was breathed. All challenges were matched in terms of basal lung function and exercise tests were matched in terms of ventilation and respiratory heat loss. Exercise induced asthma was significantly aggravated by exposure to positively ionised air, the postexercise fall in FEV1 (delta FEV1) being 24.7% (SEM and 5.3%) and 35.3% (5%) after the control and ionised air tests respectively (p less than 0.04). It is concluded that positive ionisation aggravates the bronchial response to exercise.
为评估吸入空气正离子化对支气管反应性的影响，12名哮喘儿童按随机顺序接受了两次运动激发试验。在一次试验中，他们吸入了正离子化空气（5 - 10×10⁵ 离子/立方厘米）。所有激发试验在基础肺功能方面相互匹配，运动试验在通气和呼吸热损失方面相互匹配。暴露于正离子化空气会使运动诱发的哮喘显著加重，对照试验和离子化空气试验后，运动后第一秒用力呼气容积（FEV₁）的下降（ΔFEV₁）分别为24.7%（标准误5.3%）和35.3%（5%）（p < 0.04）。结论是正离子化会加重支气管对运动的反应。
