Barlett H L, Kenney W L, Buskirk E R
Laboratory for Human Performance Research, Pennsylvania State University, University Park 16802.
Int J Obes Relat Metab Disord. 1992 Sep;16(9):653-6.
Previously, we examined the expiratory reserve volume (ERV) of the lungs as a function of percentage body fat in an adult population (age range 18-58 years). A negative correlation resulted when ERV (expressed as a percentage of vital capacity, (ERV/VC) x 100) was regressed on percentage fat for both sexes. In the present study, similar comparisons were made for 33 pre-pubertal boys and girls (aged 7-12.5 years). The regression equation for the boys ((ERV/VC) x 100 = 44.2 - 0.56%fat, r = -0.77, P = 0.002) was similar to that of the adult men ((ERV/VC) x 100 = 48.7 - 0.80 %fat, r = -78) and women ((ERV/VC) x 100 = 49.5 - 0.63 %fat, r = -0.70). However, the girls studied did not follow the same pattern. In this group of pre-pubertal girls, a significant increase in (ERV/VC) x 100 with increasing body fatness was seen ((ERV/VC) x 100 = 29.3 + 0.19 %fat, r = 0.48, P = 0.03). In all four groups, no correlation was seen with age or height. Whereas there was a significant correlation between weight and (ERV/VC) x 100 in the adults, no such relationship was evident in the younger subjects. In pre-pubertal obese girls limited upper body muscle development, perhaps as a result of limited physical activity, may explain the different relationship between ERV and body fatness.
此前，我们研究了成年人群体（年龄范围18 - 58岁）中肺的呼气储备量（ERV）与体脂百分比之间的关系。当将ERV（以肺活量的百分比表示，即(ERV/VC)×100）与两性的体脂百分比进行回归分析时，得到了负相关关系。在本研究中，对33名青春期前的男孩和女孩（年龄7 - 12.5岁）进行了类似的比较。男孩的回归方程（(ERV/VC)×100 = 44.2 - 0.56%体脂，r = -0.77，P = 0.002）与成年男性（(ERV/VC)×100 = 48.7 - 0.80%体脂，r = -0.78）和成年女性（(ERV/VC)×100 = 49.5 - 0.63%体脂，r = -0.70）的相似。然而，所研究的女孩并不遵循相同的模式。在这组青春期前女孩中，随着体脂增加，(ERV/VC)×100显著增加（(ERV/VC)×100 = 29.3 + 0.19%体脂，r = 0.48，P = 0.03）。在所有四组中，均未发现与年龄或身高存在相关性。尽管在成年人中体重与(ERV/VC)×100之间存在显著相关性，但在较年轻的受试者中并未发现这种关系。在青春期前肥胖女孩中，上身肌肉发育受限，可能是由于身体活动有限，这或许可以解释ERV与体脂之间不同的关系。
