Gartside P S, Dine M S, Glueck C J
Pediatr Res. 1984 Jul;18(7):627-30. doi: 10.1203/00006450-198407000-00011.
Using the power ponderosity index of Benn, weight (W)/height (H)p, (W/Hp) where the value of p is determined so that the correlation of height and W/Hp is zero, a set of p values was obtained from longitudinal data of 630 healthy, white, middle class children ranging in ages from birth to 9 years. Our data revealed two turning points in the relative velocity of change of height and weight not previously recognized by separate studies of velocity changes in weight and height related to chronological age. The value of p increased from birth (1.72) until about 1 month (2.39) for girls, and 5 months for boys (2.30), the first turning point, and then fell to a nadir at age 18-21 months for girls (1.75) and 21-24 months for boys (1.73), the second turning point. This fall to the nadir represents the greater influence of velocity change in height over weight. From then to age 9 years, there was a gradual and steady increase in p, greater for girls than for boys, representing the greater influence of velocity change in weight over height. The values of p have now been estimated for white, middle class children over the ages of birth to 9 years and may have utility in studies which compare obesity indicators.
使用本恩的幂 ponderosity 指数，即体重（W）/身高（H）^p，（W/H^p），其中 p 的值是这样确定的，即身高与 W/H^p 的相关性为零，从 630 名年龄从出生到 9 岁的健康、白人、中产阶级儿童的纵向数据中获得了一组 p 值。我们的数据揭示了身高和体重变化相对速度的两个转折点，这是之前关于体重和身高随年龄变化速度的单独研究未认识到的。对于女孩，p 值从出生时（1.72）增加到约 1 个月时（2.39），男孩为 5 个月时（2.30），这是第一个转折点，然后在女孩 18 - 21 个月时（1.75）和男孩 21 - 24 个月时（1.73）降至最低点，这是第二个转折点。降至最低点代表身高变化速度对体重的影响更大。从那时到 9 岁，p 逐渐稳步增加（女孩比男孩增加得更多），这代表体重变化速度对身高的影响更大。现在已经估计出了出生到 9 岁的白人、中产阶级儿童的 p 值，这些值在比较肥胖指标的研究中可能有用。
