Detlef Groth
Dados Biográficos
| ID | 137119 |
|---|---|
| NOME | Detlef Groth |
| PRENOMES | Detlef |
| SOBRENOME | Groth |
| ASSINATURA | GROTH D |
| AFILIAÇÕES | University of Potsdam |
| ORCID | 0000-0002-9441-3978 |
| VERIFICADO | Sim |
| TOTAL DE OBRAS | 21 |
| TOTAL DE CITAÇÕES | 30 |
| TOTAL COMO AUTOR | 21 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 2014 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2026 |
| ÍNDICE H | 3 |
Growth in times of political euphoria, early democracy and hope for freedom
Background: Improvements in living conditions correlate with substantial long-term trends in height, e.g. of 15 cm/100 years in Japanese males, 21 cm/150 years in Dutch males, and 14 cm/110 years in German males. Recent evidence suggests strong effects of the political background on these trends. Subjects and methods: Height of more than 14 million men of the German Armed Forces born 1865–1975 was correlated with indicators of economic prosperity…
Political Liberation, Hope, and Social Competition Are the Motor of Secular Trends in Height
BACKGROUND: Long-term improvements in physical living conditions correlate with long-term trends in height. AIM: To link temporal characteristics of the secular trend in height with the simultaneous political and economic dynamics. SAMPLE AND METHODS: Height of men of the German Armed Forces born between 1865 and 1975 was correlated with indicators of economic prosperity (GDP), nutrition and health (infant mortality), and indicators of social inh…
Chain Reversion for Detecting Associations in Interacting Variables—St. Nicolas House Analysis
(1) Background: We present a new statistical approach labeled as "St. Nicolas House Analysis" (SNHA) for detecting and visualizing extensive interactions among variables. (2) Method: We rank absolute bivariate correlation coefficients in descending order according to magnitude and create hierarchic "association chains" defined by sequences where reversing start and end point does not alter the ordering of elements. Association chains are used to …
Association of anthropometric indices of nutritional status with growth in height among Limboo children of Sikkim, India
The findings of the present study suggest nutrition is not the primary regulator of human growth. The possible influence of community effects on height is discussed
Environmental stimulation on height
Economic prosperity and increased population density stimulate male adult height to a greater extent than female adult height, and increase the sexual dimorphism in height among the tall populations of densely populated wealthy countries.
Positive influence of parental education on growth of children - statistical analysis of correlation between social and nutritional factors on children's height using the St. Nicolas House Analysis
In nature, dominance is often shown by body size; even in humans many studies report that social status is associated with body height. In today's society, educational status is an important factor for social classification. Since growing children do not have their own educational or social status, they are often affected by the status of their parents. Therefore, the question appears, whether parental educational status measurably affects the gr…
Statistical Approaches to Developmental and Growth Data of Children and Adolescents - an editorial to student research conducted during the 3rd International Student Summer School, July 2019, Potsdam …
Traumatized women's infants are bigger than children of mothers without traumas
Life history theory predicts that experiencing stress during the early period of life will result in accelerated growth and earlier maturation. Indeed, animal and some human studies documented a faster pace of growth in the offspring of stressed mothers. Recent advances in epigenetics suggest that the effects of early developmental stress might be passed across the generations. However, evidence for such intergenerational transmission is scarce, …
The end of the secular trend in Norway
Aim: We aimed to examine the distribution and secular changes of conscript body height in the geographic network of Norway since 1878 and to study its association with the degree of urbanization, and population density. Material and methods: Data on body height of Norwegian military conscripts were provided by the Statistics Norway Department (SSB). The sample comprised eight cohorts with the following measurement years: 1st 1877, 1878 and 1880, …
No correlation between short term weight gain and lower leg length gain in healthy German children
Background: Length-for-age is considered the indicator of choice in monitoring the long-term impact of chronic nutritional deficiency. Aim: We hypothesized that short term increments of body weight cross-correlate with increments of the lower leg length. Sample and methods: We re-analyzed the association between weekly measurements of weight and of lower leg length in 34 healthy German children, aged 2.9-15.9 years. The data are a subset of measu…
Influence of the A/T polymorphism of the FTO gene and sport specializations on the body composition of young Russian athletes
polymorphism on body composition of young athletes was found.
Student work on trends in infant and child growth - an editorial
The network effects on conscripts' height in the central provinces of Russian empire in the middle of XIX century - at the beginning of XX century
Height correlation coefficients between 1st order neighboring districts observed in the Russian districts were very similar to values observed in the Polish study (r = 0.24). The considered Russian territory and the territory of Poland have a lot in common. They consist of both plains without mountains. In contradistinction to Poland the transport infrastructure in Russia was weakly developed in the middle of XIX century. In addition, the mobilit…
Influence of network properties on a migration induced secular height trend by Monte Carlo simulation
Background: Recent research reported height biased migration of taller individuals and a Monte Carlo simulation showed that such preferential migration of taller individuals into network hubs can induce a secular trend of height. In the simulation model taller agents in the hubs raise the overall height of all individuals in the network by a community effect. However, it could be seen that the actual network structure influences the strength of t…
Body height in stunted Indonesian children depends directly on parental education and not via a nutrition mediated pathway - Evidence from tracing association chains by St. Nicolas House Analysis
St. Nicolas House Analysis confirmed that growth of Indonesian school children directly depends on maternal education, with no evidence that this effect is mediated by the state of nutrition.
The secular trend and network effects on height of male Japanese students from 1955 to 2015
Introduction: Body height is influenced by biological factors such as genetics, nutrition and health, but also by the social network, and environmental and economical factors. During centuries, the Japanese society has developed on islands. This setting provides ideal natural conditions for studying the influence of social networks on human height. Material and methods: We investigated body height of male Japanese students aged 17.5 years obtaine…
Body height, social dominance and the political climate - a comment
Background: The association between stature and social dominance is known. Dominance within social groups and current politics are related issues. We therefore aimed to compare estimates of the opinion of a population about their current political issues, with physical growth. Material and methods: We used data on the 2012 and the 2014 elections for the Japanese House of Representatives and the percent proportion of votes of the 47 prefectures of…
The effect of neighboring districts on body height of Polish conscripts
order neighbors than in another country (Switzerland) may be associated with differences in geography, since in Poland there are no natural barriers (e.g., mountains) and road infrastructure is well-developed.
Modeling a secular trend by Monte Carlo simulation of height biased migration in a spatial network
This study confirmed that secular height trends can be modeled by preferred migration of tall individuals into network hubs. However, basic network properties of the migration simulation models differed greatly from the natural features observed in Swiss military conscripts. Similar network-based data from other countries should be explored to better investigate height trends with Monte Carlo migration approach.
Spatial conscript body height correlation of Norwegian districts in the 19th century
century showed significant medium sized effects for the within district autocorrelation between 1878 and 1896 as well as medium neighborhood correlation, slightly lower in comparison to a recent study regarding Swiss conscripts. Digitalizing more data from other years in this and later time spans as well as using older road and ship connections instead of the actual road data might stabilize and improve those findings.
The impact of physical connectedness on body height in Swiss conscripts
BACKGROUND: Human populations differ in height. Recent evidence suggests that social networks play an important role in the regulation of adolescent growth and adult height. We further investigated the effect of physical connectedness on height. MATERIAL AND METHODS: We considered Switzerland as a geographic network with 169 nodes (district capitals) and 335 edges (connecting roads) and studied effects of connectedness on height in Swiss conscrip…
The secular trend and network effects on height of male Japanese students from 1955 to 2015
Introduction: Body height is influenced by biological factors such as genetics, nutrition and health, but also by the social network, and environmental and economical factors. During centuries, the Japanese society has developed on islands. This setting provides ideal natural conditions for studying the influence of social networks on human height. Material and methods: We investigated body height of male Japanese students aged 17.5 years obtaine…
The impact of physical connectedness on body height in Swiss conscripts
BACKGROUND: Human populations differ in height. Recent evidence suggests that social networks play an important role in the regulation of adolescent growth and adult height. We further investigated the effect of physical connectedness on height. MATERIAL AND METHODS: We considered Switzerland as a geographic network with 169 nodes (district capitals) and 335 edges (connecting roads) and studied effects of connectedness on height in Swiss conscrip…
The end of the secular trend in Norway
Aim: We aimed to examine the distribution and secular changes of conscript body height in the geographic network of Norway since 1878 and to study its association with the degree of urbanization, and population density. Material and methods: Data on body height of Norwegian military conscripts were provided by the Statistics Norway Department (SSB). The sample comprised eight cohorts with the following measurement years: 1st 1877, 1878 and 1880, …
The effect of neighboring districts on body height of Polish conscripts
order neighbors than in another country (Switzerland) may be associated with differences in geography, since in Poland there are no natural barriers (e.g., mountains) and road infrastructure is well-developed.
Spatial conscript body height correlation of Norwegian districts in the 19th century
century showed significant medium sized effects for the within district autocorrelation between 1878 and 1896 as well as medium neighborhood correlation, slightly lower in comparison to a recent study regarding Swiss conscripts. Digitalizing more data from other years in this and later time spans as well as using older road and ship connections instead of the actual road data might stabilize and improve those findings.
Positive influence of parental education on growth of children - statistical analysis of correlation between social and nutritional factors on children's height using the St. Nicolas House Analysis
In nature, dominance is often shown by body size; even in humans many studies report that social status is associated with body height. In today's society, educational status is an important factor for social classification. Since growing children do not have their own educational or social status, they are often affected by the status of their parents. Therefore, the question appears, whether parental educational status measurably affects the gr…
Traumatized women's infants are bigger than children of mothers without traumas
Life history theory predicts that experiencing stress during the early period of life will result in accelerated growth and earlier maturation. Indeed, animal and some human studies documented a faster pace of growth in the offspring of stressed mothers. Recent advances in epigenetics suggest that the effects of early developmental stress might be passed across the generations. However, evidence for such intergenerational transmission is scarce, …
The network effects on conscripts' height in the central provinces of Russian empire in the middle of XIX century - at the beginning of XX century
Height correlation coefficients between 1st order neighboring districts observed in the Russian districts were very similar to values observed in the Polish study (r = 0.24). The considered Russian territory and the territory of Poland have a lot in common. They consist of both plains without mountains. In contradistinction to Poland the transport infrastructure in Russia was weakly developed in the middle of XIX century. In addition, the mobilit…
Environmental stimulation on height
Economic prosperity and increased population density stimulate male adult height to a greater extent than female adult height, and increase the sexual dimorphism in height among the tall populations of densely populated wealthy countries.
The impact of physical connectedness on body height in Swiss conscripts
BACKGROUND: Human populations differ in height. Recent evidence suggests that social networks play an important role in the regulation of adolescent growth and adult height. We further investigated the effect of physical connectedness on height. MATERIAL AND METHODS: We considered Switzerland as a geographic network with 169 nodes (district capitals) and 335 edges (connecting roads) and studied effects of connectedness on height in Swiss conscrip…
The effect of neighboring districts on body height of Polish conscripts
order neighbors than in another country (Switzerland) may be associated with differences in geography, since in Poland there are no natural barriers (e.g., mountains) and road infrastructure is well-developed.
Modeling a secular trend by Monte Carlo simulation of height biased migration in a spatial network
This study confirmed that secular height trends can be modeled by preferred migration of tall individuals into network hubs. However, basic network properties of the migration simulation models differed greatly from the natural features observed in Swiss military conscripts. Similar network-based data from other countries should be explored to better investigate height trends with Monte Carlo migration approach.
Spatial conscript body height correlation of Norwegian districts in the 19th century
century showed significant medium sized effects for the within district autocorrelation between 1878 and 1896 as well as medium neighborhood correlation, slightly lower in comparison to a recent study regarding Swiss conscripts. Digitalizing more data from other years in this and later time spans as well as using older road and ship connections instead of the actual road data might stabilize and improve those findings.
The secular trend and network effects on height of male Japanese students from 1955 to 2015
Introduction: Body height is influenced by biological factors such as genetics, nutrition and health, but also by the social network, and environmental and economical factors. During centuries, the Japanese society has developed on islands. This setting provides ideal natural conditions for studying the influence of social networks on human height. Material and methods: We investigated body height of male Japanese students aged 17.5 years obtaine…
Body height, social dominance and the political climate - a comment
Background: The association between stature and social dominance is known. Dominance within social groups and current politics are related issues. We therefore aimed to compare estimates of the opinion of a population about their current political issues, with physical growth. Material and methods: We used data on the 2012 and the 2014 elections for the Japanese House of Representatives and the percent proportion of votes of the 47 prefectures of…
Influence of the A/T polymorphism of the FTO gene and sport specializations on the body composition of young Russian athletes
polymorphism on body composition of young athletes was found.
Student work on trends in infant and child growth - an editorial
The network effects on conscripts' height in the central provinces of Russian empire in the middle of XIX century - at the beginning of XX century
Height correlation coefficients between 1st order neighboring districts observed in the Russian districts were very similar to values observed in the Polish study (r = 0.24). The considered Russian territory and the territory of Poland have a lot in common. They consist of both plains without mountains. In contradistinction to Poland the transport infrastructure in Russia was weakly developed in the middle of XIX century. In addition, the mobilit…
Influence of network properties on a migration induced secular height trend by Monte Carlo simulation
Background: Recent research reported height biased migration of taller individuals and a Monte Carlo simulation showed that such preferential migration of taller individuals into network hubs can induce a secular trend of height. In the simulation model taller agents in the hubs raise the overall height of all individuals in the network by a community effect. However, it could be seen that the actual network structure influences the strength of t…
Body height in stunted Indonesian children depends directly on parental education and not via a nutrition mediated pathway - Evidence from tracing association chains by St. Nicolas House Analysis
St. Nicolas House Analysis confirmed that growth of Indonesian school children directly depends on maternal education, with no evidence that this effect is mediated by the state of nutrition.
Association of anthropometric indices of nutritional status with growth in height among Limboo children of Sikkim, India
The findings of the present study suggest nutrition is not the primary regulator of human growth. The possible influence of community effects on height is discussed
Environmental stimulation on height
Economic prosperity and increased population density stimulate male adult height to a greater extent than female adult height, and increase the sexual dimorphism in height among the tall populations of densely populated wealthy countries.
Positive influence of parental education on growth of children - statistical analysis of correlation between social and nutritional factors on children's height using the St. Nicolas House Analysis
In nature, dominance is often shown by body size; even in humans many studies report that social status is associated with body height. In today's society, educational status is an important factor for social classification. Since growing children do not have their own educational or social status, they are often affected by the status of their parents. Therefore, the question appears, whether parental educational status measurably affects the gr…
Statistical Approaches to Developmental and Growth Data of Children and Adolescents - an editorial to student research conducted during the 3rd International Student Summer School, July 2019, Potsdam …
Traumatized women's infants are bigger than children of mothers without traumas
Life history theory predicts that experiencing stress during the early period of life will result in accelerated growth and earlier maturation. Indeed, animal and some human studies documented a faster pace of growth in the offspring of stressed mothers. Recent advances in epigenetics suggest that the effects of early developmental stress might be passed across the generations. However, evidence for such intergenerational transmission is scarce, …
The end of the secular trend in Norway
Aim: We aimed to examine the distribution and secular changes of conscript body height in the geographic network of Norway since 1878 and to study its association with the degree of urbanization, and population density. Material and methods: Data on body height of Norwegian military conscripts were provided by the Statistics Norway Department (SSB). The sample comprised eight cohorts with the following measurement years: 1st 1877, 1878 and 1880, …
No correlation between short term weight gain and lower leg length gain in healthy German children
Background: Length-for-age is considered the indicator of choice in monitoring the long-term impact of chronic nutritional deficiency. Aim: We hypothesized that short term increments of body weight cross-correlate with increments of the lower leg length. Sample and methods: We re-analyzed the association between weekly measurements of weight and of lower leg length in 34 healthy German children, aged 2.9-15.9 years. The data are a subset of measu…
Chain Reversion for Detecting Associations in Interacting Variables—St. Nicolas House Analysis
(1) Background: We present a new statistical approach labeled as "St. Nicolas House Analysis" (SNHA) for detecting and visualizing extensive interactions among variables. (2) Method: We rank absolute bivariate correlation coefficients in descending order according to magnitude and create hierarchic "association chains" defined by sequences where reversing start and end point does not alter the ordering of elements. Association chains are used to …
Political Liberation, Hope, and Social Competition Are the Motor of Secular Trends in Height
BACKGROUND: Long-term improvements in physical living conditions correlate with long-term trends in height. AIM: To link temporal characteristics of the secular trend in height with the simultaneous political and economic dynamics. SAMPLE AND METHODS: Height of men of the German Armed Forces born between 1865 and 1975 was correlated with indicators of economic prosperity (GDP), nutrition and health (infant mortality), and indicators of social inh…
Growth in times of political euphoria, early democracy and hope for freedom
Background: Improvements in living conditions correlate with substantial long-term trends in height, e.g. of 15 cm/100 years in Japanese males, 21 cm/150 years in Dutch males, and 14 cm/110 years in German males. Recent evidence suggests strong effects of the political background on these trends. Subjects and methods: Height of more than 14 million men of the German Armed Forces born 1865–1975 was correlated with indicators of economic prosperity…
Demography (14 obras) · Geography (11 obras) · Sociology (10 obras) · Statistics (10 obras) · Medicine (9 obras) · Mathematics (7 obras) · Biology (6 obras) · Body height (6 obras) · Body weight (6 obras) · Psychology (6 obras)