Theory of Sports Department, University of Physical Education, Poznań, Poland.
Department of Kinesiology and Health Education, University of Texas at Austin, and Adjunct Professor, School of Public Health and Information Sciences and Department of Anthropology, University of Louisville, Louisville, Kentucky, USA.
Am J Hum Biol. 2021 Mar;33(2):e23461. doi: 10.1002/ajhb.23461. Epub 2020 Jul 13.
To evaluate secular changes in the heights and weights of rural school youth in west-central Poland across decennial surveys of the same communities spanning 1986 and 2016.
Heights and weights of school youth 7 to 15 years in 10 rural communities in the vicinity of the city of Poznań were measured in 1986 (1417 boys, 1326 girls), 1996 (979 boys, 947 girls), 2006 (871 boys, 843 girls), and 2016 (1189 boys, 1105 girls). Descriptive statistics for sex-specific single year chronological age groups were calculated by survey, while the sample was partitioned into three age groups (7-9, 10-12, 13-15 years) for detailed analysis of changes across surveys using sex-specific ANCOVA with age and age as covariates. Pairwise post hoc comparisons between specific surveys, adjusted for multiple comparisons (Bonferroni), were evaluated.
Heights and weights of rural school youth increased significantly between 1986 and 2016, but estimated secular gains between adjacent surveys were variable and not linear over time.
Significant secular changes occurred in the heights and weights of rural school children in the 10 rural communities between 1986 and 2016, but estimated rates of change across sequential decennial surveys were variable. The results were generally consistent with corresponding studies of Polish youth.
评估波兰中西部农村地区青少年身高和体重的长期变化，这些数据来自跨越 1986 年和 2016 年的同一社区的十年一次的调查。
在波兹南市附近的 10 个农村社区中，对 7 至 15 岁的学校青少年进行身高和体重测量，测量时间分别为 1986 年（男 1417 人，女 1326 人）、1996 年（男 979 人，女 947 人）、2006 年（男 871 人，女 843 人）和 2016 年（男 1189 人，女 1105 人）。按调查计算了各性别单一年龄组的描述性统计数据，同时将样本分为三个年龄组（7-9 岁、10-12 岁、13-15 岁），使用性别特异性协方差分析（ANCOVA），以年龄和年龄为协变量，对各调查间的变化进行详细分析。采用 Bonferroni 法对特定调查之间的两两事后比较进行了评估。
1986 年至 2016 年，农村地区青少年的身高和体重显著增加，但相邻调查之间的估计增长随时间变化而变化，并非线性增长。
1986 年至 2016 年，10 个农村社区农村地区学童的身高和体重发生了显著变化，但连续十年的调查中，估计的变化率是可变的。结果与波兰青少年的相应研究基本一致。
