Lawther P J, Brooks A G, Waller R E
Thorax. 1978 Dec;33(6):773-8. doi: 10.1136/thx.33.6.773.
A cohort of medical students first seen in 1962 has now been examined for a third time. The prevalence of symptoms of cough, phlegm, and breathlessness among them has remained low, and smoking habits have been light in comparison with those of the general population. Results of the three successive sets of measurements of lung function indicate that, in general, optimum values were reached in the early 20s, with little further change up to age 29. There was some evidence of reduced ventilatory capacity in subjects with histories of acute chest illnesses.
一组1962年首次接受检查的医科学生如今已接受第三次检查。他们中咳嗽、咳痰和气短症状的患病率一直较低,与普通人群相比,吸烟习惯也较轻。连续三组肺功能测量结果表明,一般来说,最佳值在20岁出头时达到,到29岁时变化不大。有证据表明,有急性胸部疾病史的受试者通气能力有所下降。