Seiji Ohsawa
Biographic Data
| ID | 8824909 |
|---|---|
| NAME | Seiji Ohsawa |
| GIVEN NAMES | Seiji |
| FAMILY NAME | Ohsawa |
| SIGNATURE | OHSAWA S |
| AFFILIATIONS | Otsuma Women's University |
| VERIFIED | No |
| TOTAL WORKS | 8 |
| TOTAL CITATIONS | 0 |
| AUTHOR COUNT | 8 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1991 |
| LATEST PUBLICATION YEAR | 2000 |
| H-INDEX | 0 |
Onset of the release of spermatozoa (spermarche) in Chinese male youth
Data on the prevalence of the first ejaculating emission for 83,902 Chinese boys 9 through 18 years were collected using interviews. Median spermarcheal ages (MSAs) were calculated by using the status quo data and probit analysis. Subjects consisted of 61,812 Han boys from urban and rural areas in 29 provinces, and 22,090 minority boys from 17 minority ethnic groups. Median spermarcheal ages were 14.24 years for urban Han boys and 14.85 years for…
Age at menarche and comparison of the growth and performance of pre- and post-menarcheal girls in China
The median menarcheal ages (MMAs) of Chinese girls in 1991 were calculated by using the status quo method and probit analysis in 64,322 schoolgirls 8-18 years of age. The sample was randomly selected from 29 provinces of China. The MMAs were 13.01 ± 1.19 and 13.64 ± 1.24 years for urban and rural girls, respectively. These estimates were 0.16 and 0.20 years lower than that of Chinese urban and rural girls in 1985, respectively. The associations b…
Age at menarche and comparison of the growth and performance of pre‐ and post‐menarcheal girls in China
Changes in somatotype during growth in Chinese youth 7–18 years of age
Heath-Carter anthropometric somatotypes were calculated for 7,710 Chinese youths (4,434 boys and 3,276 girls), 7-18 years of age in the context of sex and age differences in distributions during adolescence. Age-specific trends are characterized by a consistent increase in endomorphy in girls and generally stable mesomorphy in boys. Somatotypes are consistently dominant in mesomorphy in boys and in endomorphy in girls across all ages. Somatotype …
Secular changes in the stature, weight, and age at maximum growth increments of urban Chinese girls from the 1950s to 1985
This study focuses on changes in the stature, weight, and age at maximum increments in Chinese urban girls 7–17 years of age between the 1950s and 1985. The data come from anthropometric surbeys in the 1950s, 1960s, 1970s, and 1985 in 17 Chinese cities. An overall increasing trend is apparent for stature and weight. The average increments are 1.91 cm and 0.57 kg per decade for 7 year olds, 3.43 cm per decade for 11 year olds, 2.11 kg per decade f…
Growth changes of Chinese Mongolian, Uygur, Korean, and Tibetan ethnic groups in the past forty years
Growth changes in stature and weight between 1950–60s and 1991 of four Chinese ethnic groups were surveyed: the Mongolian, Uygur, Korean, and Tibetan minorities. The subjects were school children and youths aged 7 through 17 years who lived in the urban areas of Huhehaote city, Wulumuqi city, and Lasa city, where the corresponding groups lived. An overall increase in body size was found in both boys and girls. Increments of stature and weight for…
Different Growth Status of Youths Aged 18 from 27 Chinese Minority Nations
This study focused on studying the morphological similarities of 27 Chinese minority nations' youths aged 18 by using PCA-Q mode cluster analysis. Six measurements of body size, two indices of body shape and four indices of growth tempo (which were estimated from cross-sectional data of 69, 389 subjects aged 7 through 18 by using proportional interpolation method) were used as variables. The values of these variables were normalized into principa…
Cluster analysis on body size of children aged 7 of 27 Chinese minority nations
By using PCA-Q mode cluster analysis, the morphological differences and similarities among Chinese minority nations were studied. The data was drawn from 2,473 boys and 2,356 girls aged 7 who came from 27 Chinese minority nations and participated in the "National Survey on Students Constitution and Health". Their body sizes were reflected by six physical measures. At first, the values of these measures were normalized into principal component sco…
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Cluster analysis on body size of children aged 7 of 27 Chinese minority nations
By using PCA-Q mode cluster analysis, the morphological differences and similarities among Chinese minority nations were studied. The data was drawn from 2,473 boys and 2,356 girls aged 7 who came from 27 Chinese minority nations and participated in the "National Survey on Students Constitution and Health". Their body sizes were reflected by six physical measures. At first, the values of these measures were normalized into principal component sco…
Different Growth Status of Youths Aged 18 from 27 Chinese Minority Nations
This study focused on studying the morphological similarities of 27 Chinese minority nations' youths aged 18 by using PCA-Q mode cluster analysis. Six measurements of body size, two indices of body shape and four indices of growth tempo (which were estimated from cross-sectional data of 69, 389 subjects aged 7 through 18 by using proportional interpolation method) were used as variables. The values of these variables were normalized into principa…
Growth changes of Chinese Mongolian, Uygur, Korean, and Tibetan ethnic groups in the past forty years
Growth changes in stature and weight between 1950–60s and 1991 of four Chinese ethnic groups were surveyed: the Mongolian, Uygur, Korean, and Tibetan minorities. The subjects were school children and youths aged 7 through 17 years who lived in the urban areas of Huhehaote city, Wulumuqi city, and Lasa city, where the corresponding groups lived. An overall increase in body size was found in both boys and girls. Increments of stature and weight for…
Secular changes in the stature, weight, and age at maximum growth increments of urban Chinese girls from the 1950s to 1985
This study focuses on changes in the stature, weight, and age at maximum increments in Chinese urban girls 7–17 years of age between the 1950s and 1985. The data come from anthropometric surbeys in the 1950s, 1960s, 1970s, and 1985 in 17 Chinese cities. An overall increasing trend is apparent for stature and weight. The average increments are 1.91 cm and 0.57 kg per decade for 7 year olds, 3.43 cm per decade for 11 year olds, 2.11 kg per decade f…
Changes in somatotype during growth in Chinese youth 7–18 years of age
Heath-Carter anthropometric somatotypes were calculated for 7,710 Chinese youths (4,434 boys and 3,276 girls), 7-18 years of age in the context of sex and age differences in distributions during adolescence. Age-specific trends are characterized by a consistent increase in endomorphy in girls and generally stable mesomorphy in boys. Somatotypes are consistently dominant in mesomorphy in boys and in endomorphy in girls across all ages. Somatotype …
Age at menarche and comparison of the growth and performance of pre- and post-menarcheal girls in China
The median menarcheal ages (MMAs) of Chinese girls in 1991 were calculated by using the status quo method and probit analysis in 64,322 schoolgirls 8-18 years of age. The sample was randomly selected from 29 provinces of China. The MMAs were 13.01 ± 1.19 and 13.64 ± 1.24 years for urban and rural girls, respectively. These estimates were 0.16 and 0.20 years lower than that of Chinese urban and rural girls in 1985, respectively. The associations b…
Age at menarche and comparison of the growth and performance of pre‐ and post‐menarcheal girls in China
Onset of the release of spermatozoa (spermarche) in Chinese male youth
Data on the prevalence of the first ejaculating emission for 83,902 Chinese boys 9 through 18 years were collected using interviews. Median spermarcheal ages (MSAs) were calculated by using the status quo data and probit analysis. Subjects consisted of 61,812 Han boys from urban and rural areas in 29 provinces, and 22,090 minority boys from 17 minority ethnic groups. Median spermarcheal ages were 14.24 years for urban Han boys and 14.85 years for…
Demography (8 works) · Geography (8 works) · Sociology (7 works) · History (5 works) · Hum (5 works) · Medicine (5 works) · Body height (3 works) · Body weight (3 works) · China (3 works) · Ethnic group (3 works)