Williams S P, Fullton J M, Tsai M J, Pimmel R L, Collier A M
J Appl Physiol Respir Environ Exerc Physiol. 1979 Jul;47(1):169-74. doi: 10.1152/jappl.1979.47.1.169.
The frequency dependence of total respiratory impedance during spontaneous breathing was measured repeatedly in 16 children (3--5 yr old) over a 3-mo period using forced random noise and spectral analysis. Total respiratory resistance, compliance, and inertance, which were calculated fromthe impedance data using regression analysis with a second-order model, had overall mean values +/- SD of 5.61 +/- 0.49 cmH2O.l-1.s, 403 +/- 1.04 ml.cmH2O-1, and 0.0120 +/- 0.0024 cmH2O.l-1.s2, respectively. Linear regression analysis showed that resistance and compliance correlated with either height or forced vital capacity with r values in the range 0.77--0.89. Analysis of measurement variability suggested that resistance measurements had, on the average, a coefficient of variation of 15%; corresponding values for compliance and inertance measurements were 25%.
在3个月的时间里，使用强迫随机噪声和频谱分析，对16名3至5岁儿童在自主呼吸期间的总呼吸阻抗频率依赖性进行了反复测量。使用二阶模型通过回归分析从阻抗数据计算得出的总呼吸阻力、顺应性和惯性，其总体平均值±标准差分别为5.61±0.49 cmH₂O·l⁻¹·s、403±1.04 ml·cmH₂O⁻¹和0.0120±0.0024 cmH₂O·l⁻¹·s²。线性回归分析表明，阻力和顺应性与身高或用力肺活量相关，相关系数r值在0.77至0.89之间。测量变异性分析表明，阻力测量的平均变异系数为15%；顺应性和惯性测量的相应值为25%。
