Adiposity and body fat distribution based on skinfold thicknesses and body circumferences in Czech preschool children, secular changes.

IF 2.3 3区 生物学 Q2 MULTIDISCIPLINARY SCIENCES
PeerJ Pub Date : 2024-12-13 eCollection Date: 2024-01-01 DOI:10.7717/peerj.18695
Anna Vážná, Jan M Novák, Robert Daniš, Petr Sedlak
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引用次数: 0

Abstract

Background: The long-standing widespread prevalence of obesity includes issues of its evaluation. Nutritional status may be assessed using various tools and methods; among others simple anthropometric measurements are well established. Widely used body mass index (BMI), presents an obstacle of needing to calculate a standard deviation score (SD) for correct use in the child population. As BMI overlooks body composition, it is necessary to evaluate fat and muscle mass with different methods. Established skinfolds and circumferences are used in many variations and equations to accomplish that goal; however, the parameters used in these methods also undergo secular changes. Furthermore, secular changes have been documented in fat mass distribution. The aim of the study is to assess secular changes of skinfolds thickness and body circumferences and evaluate their validity for use in clinical practice and population research.

Methods and sample: Our database consisted of a recent (2016-2022) sample with 594 participants (298 males) and a reference sample (from 1990) with 2,910 participants (1,207 males). Both cohorts comprised Czech preschool children, aged 4.00 to 6.99 years. With standard methodology, anthropometric parameters were obtained for 13 skinfolds and eight circumferences, by trained staff. The equations of Slaughter, Durnin and Deurenberg were correspondingly calculated. Statistical evaluation was conducted in the R programming language, using Welch's test, Cohen's d and the Bland-Altman method.

Results: Our study found significant increases in skinfold thickness on the abdomen, chest I. and forearm, with high clinical relevance (p ≥ 0.01; d = range from 0.20 to 0.70). Contrastingly, apart from the abdominal area, a decrease of circumferences was observed. The body fat percentage estimation equations were tested for bias in the recent sample in the context of bioimpedance analysis with the Bland-Altman method. All equations are suitable for application in clinical use.

Discussion: Documented secular changes in fat mass distribution are only part of a contemporary accelerating trend of obesity prevalence. Our findings support the trend of a decline of circumferences and rise of skinfold thickness in corresponding areas, especially on the limbs, that is evidenced by the trend of latent obesity. The results of the study show the need to complement established diagnostic procedures in childhood obesitology with abdominal and midthigh circumferences and optionally even the maximal circumference of the forearm. These circumferences should always be measured alongside the skinfold thickness of the region. Only in this way can the overall adiposity of an individual with regard to secular changes, including the detection of latent obesity, be objectively evaluated.

背景:肥胖症长期以来普遍存在,其中包括对其进行评估的问题。营养状况可通过各种工具和方法进行评估,其中简单的人体测量方法已得到广泛认可。广泛使用的体重指数(BMI)存在一个障碍,即需要计算标准偏差分值(SD)才能正确用于儿童群体。由于 BMI 忽略了身体成分,因此有必要使用不同的方法来评估脂肪和肌肉质量。既定的皮褶和周长有许多不同的方法和公式来实现这一目标;然而,这些方法中使用的参数也会随着时间的推移而发生变化。此外,脂肪量分布也有长期变化的记录。本研究旨在评估皮褶厚度和体围的世代变化,并评估其在临床实践和人口研究中使用的有效性:我们的数据库由近期(2016-2022 年)样本和参考样本组成,前者有 594 名参与者(298 名男性),后者有 2,910 名参与者(1,207 名男性)。两组样本均由捷克学龄前儿童组成,年龄在 4.00 至 6.99 岁之间。采用标准方法,由经过培训的工作人员获取 13 个皮褶和 8 个周长的人体测量参数。斯洛特(Slaughter)、杜宁(Durnin)和德伦伯格(Deurenberg)的等差数列也进行了相应的计算。统计评估采用 R 编程语言,使用韦尔奇检验、科恩氏 d 和布兰德-阿尔特曼方法:我们的研究发现,腹部、胸部 I 和前臂的皮褶厚度明显增加,具有很高的临床相关性(p ≥ 0.01;d = 范围从 0.20 到 0.70)。相反,除腹部外,其他部位的围度均有所下降。在生物阻抗分析的背景下,采用布兰-阿尔特曼法对近期样本中的体脂百分比估算方程进行了偏差测试。所有方程都适合应用于临床:讨论:有文献记载的脂肪分布的长期变化只是当代肥胖患病率加速趋势的一部分。我们的研究结果支持相应部位(尤其是四肢)周长下降和皮褶厚度上升的趋势,这也是潜在肥胖趋势的证明。研究结果表明,在儿童肥胖症诊断过程中,有必要补充腹围和大腿中部围度,甚至前臂最大围度。在测量这些围度的同时,还应测量该区域的皮褶厚度。只有这样,才能客观地评估一个人的整体肥胖程度的长期变化,包括发现潜在肥胖。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
PeerJ
PeerJ MULTIDISCIPLINARY SCIENCES-
CiteScore
4.70
自引率
3.70%
发文量
1665
审稿时长
10 weeks
期刊介绍: PeerJ is an open access peer-reviewed scientific journal covering research in the biological and medical sciences. At PeerJ, authors take out a lifetime publication plan (for as little as $99) which allows them to publish articles in the journal for free, forever. PeerJ has 5 Nobel Prize Winners on the Board; they have won several industry and media awards; and they are widely recognized as being one of the most interesting recent developments in academic publishing.
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