Cotes J E, Dabbs J M, Hall A M, Heywood C, Laurence K M
Ann Hum Biol. 1979 Jul-Aug;6(4):307-14. doi: 10.1080/03014467900003691.
The ventilatory capacity, total lung capacity and transfer factor with their respective subdivisions have been measured on 254 healthy British boy and girl twins aged 8-16 yrs. The logarithmic regression relationships of lung function on stature have been compared with those on sitting height and on stature plus indices of body muscle and fat. The regressions on stature and on sitting height describe the results with similar precision, but stature is marginally better; either index may be used as the reference variable. For the description of inspiratory capacity and of all indices which include this volume (e.g. vital capacity, total lung capacity and transfer factor), additional precision is secured by adding to the regression equation on stature a term for fat-free mass or body mass divided by the square of the stature; for the description of functional residual capacity, the inclusion of a term for % body fat similarly reduces the variance about the regression equation. The difference in lung function between boys and girls is smaller when the function is related to stature than to sitting height. It is further reduced when fat-free mass/sature and % body fat are also included in the prediction equations. The equations may be used to obtain reference values for indices of lung function in similar subjects.
对254名年龄在8至16岁的健康英国双胞胎男孩和女孩测量了通气能力、肺总量和转移因子及其各自的细分指标。将肺功能与身高的对数回归关系与肺功能与坐高以及身高加上身体肌肉和脂肪指数的对数回归关系进行了比较。身高和坐高的回归以相似的精度描述结果，但身高略好一些；任一指标均可用作参考变量。为描述吸气量以及包括该容积的所有指标（如肺活量、肺总量和转移因子），通过在身高回归方程中添加无脂肪体重或体重除以身高平方的项可提高精度；为描述功能残气量，纳入身体脂肪百分比项同样可减少回归方程的方差。当肺功能与身高相关时，男孩和女孩之间的肺功能差异比与坐高相关时小。当预测方程中还纳入无脂肪体重/身高和身体脂肪百分比时，差异进一步减小。这些方程可用于获取类似受试者肺功能指标的参考值。
