Bosch P R, Wells C L
Exercise and Sport Research Institute, Arizona State University, Tempe 85287-0404.
Med Sci Sports Exerc. 1991 Mar;23(3):384-8.
This study compared residual lung volumes (RV) (oxygen dilution technique) of able-bodied (AB) and spinal cord injured (SCI) males on dry land in air (RVA) and immersed to the neck in water (RVW). The effects of significant differences in RV on calculations of body density (Db) and percent body fat (%BF) were also assessed. The subjects were eight AB, eight paraplegic (PARA), and eight quadriplegic (QUAD) males, ranging in age from 18 to 51 yr. There was a 0.99 correlation (P less than 0.001) between RVA and RVW for AB subjects but no significant correlations between RVA and RVW for the PARA or QUAD groups. RVA in the QUAD group was significantly higher than in the PARA or AB group (P less than 0.003). There were no differences in RVW among the three groups. In the QUAD group, RVA was significantly larger than RVW (P less than 0.001), but there were no significant differences between RVA and RVW for the PARA or AB subjects. Db and %BF did not differ significantly among the PARA or AB groups when calculated at RVA and RVW. However, for QUAD, both Db and %BF differed significantly (P less than 0.001) when calculated at RVA and RVW. It was concluded that, for the purpose of hydrostatic weighing, residual lung volume of quadriplegic persons should be measured with the subject immersed in water.
本研究比较了健全男性（AB）和脊髓损伤（SCI）男性在陆地上空气中（RVA）以及颈部浸入水中时（RVW）的残气量（RV）（氧稀释技术）。还评估了RV的显著差异对身体密度（Db）和体脂百分比（%BF）计算的影响。受试者为8名健全男性、8名截瘫（PARA）男性和8名四肢瘫（QUAD）男性，年龄在18至51岁之间。AB组受试者的RVA与RVW之间存在0.99的相关性（P<0.001），但PARA组或QUAD组的RVA与RVW之间无显著相关性。QUAD组的RVA显著高于PARA组或AB组（P<0.003）。三组之间的RVW无差异。在QUAD组中，RVA显著大于RVW（P<0.001），但PARA组或AB组受试者的RVA与RVW之间无显著差异。当在RVA和RVW下计算时，PARA组或AB组之间的Db和%BF无显著差异。然而，对于QUAD组，在RVA和RVW下计算时，Db和%BF均有显著差异（P<0.001）。得出的结论是，为了进行静水称重，四肢瘫患者的残气量应在受试者浸入水中时进行测量。
