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At least 217 records · Page 12Linked to original sources
PubMed1998

Body height and weight and respiratory diseases in skeletal Class II/1 orthodontic patients.

The aims of this study were to determine if there is an increased incidence of respiratory diseases in patients with Angle Class II/1 skeletal intermaxillary relationship in comparison to eugnathic patients and if there is a difference of body height and weight between them. The sample consisted of 60 eugnathic subjects and 88 subjects with Class II/1. Girls were examined at an age of 6, 7, 8, 10, 13 and 14 and boys at an age of 7, 8, 9, 11, 14 and 15. All subjects underwent an orthodontic and medical examination in these time intervals. Data about their respiratory diseases as well as those about their height and weight were taken from their medical files in school dispensaries and were statistically analyzed. No statistically significant differences with regard to the frequency of respiratory diseases were found between eugnathic subjects and those with Class II/1. In almost all investigated time intervals subjects with Class II/1 were statistically significantly higher than the eugnathic subjects, but only in the 8-years old male group with Class II/1 the subjects were heavier than others. The results of this study suggest that patients with Class II/1 either have a faster growth pattern or belong to an asthenic constitution type.

Adolescent↗
PubMedDate not supplied

Secular growth changes in body height and weight in children and adolescents in Shandong, China between 1939 and 2000.

BACKGROUND: There is strong evidence of a positive secular trend in physical growth in most of the world during the last century. However, no studies on this trend have been reported in Shandong Province, China. AIM: The study assessed the secular trend in body height and weight in Shandong Province during the past few decades and the association of socio-economic status with the intensity of the trend. SUBJECTS AND METHODS: The results of height and weight in 7-18-year-old boys and girls obtained in nine subsequent surveys (1939, 1956, 1962, 1972, 1979, 1985, 1991, 1995, and 2000) were included in this analysis. The differences of mean values between surveys and the increments per decade were compared. Socio-economic indicators were collected and analysed. RESULTS: In 18-year-old groups, mean height increased from 164.9 to 172.6 cm for boys and from 155.9 to 160.6 cm for girls, corresponding to 1.75 and 1.07 cm per decade, respectively, and the increments of weight were 7.5 kg for boys and 0.3 kg for girls, corresponding to 1.70 and 0.07 kg per decade, respectively, between 1956 and 2000. The biggest changes of physical growth were in 13-year-old boys and 11-year-old girls. CONCLUSION: Positive secular trends occurred in 7-18-year-old children and adolescents in Shandong Province, China during 1939-2000, which may reflect the secular changes in socio-economic status.

Adolescent↗
PubMed1990

[Secular trend of body height and "acceleration" or fluctuation in growth in height in child development--on questions of methodology in relation to pre-historical skeletal remains].

The possibility of obtaining information on growth and development from prehistoric and early historic skeletal remains of children and juveniles is discussed. Beside simple measurements of length there are some new methods of assessment, e.g. control of "Harris' lines", thickness of bone corticalis including cremated bones, diameters of neural canal and vertebral body height. Estimation of age based on dentition must be presumed in every case. Results show oscillations rather than a linear or curved trend in only on direction. The phenomenon of acceleration can also not be seen as a return to earlier phases of mankind.

Adolescent↗
PubMed2000

Relative effect of genetic and environmental factors on body height: differences across birth cohorts among Finnish men and women.

OBJECTIVES: This study examined the change in heritability of adult body height across birth cohorts in Finland. METHODS: In 1981, cross-sectional questionnaires were completed by 10,968 twin pairs born before 1958. The effect of genetic factors was estimated via genetic modeling. RESULTS: Heritability increased from the cohort born before 1929 (0.76, 95% confidence interval [CI] = 0.65, 0.88 in men; 0.66, 95% CI = 0.55, 0.77 in women) to that born in 1947 through 1957 (0.81, 95% CI = 0.73, 0.87 in men; 0.82, 95% CI = 0.75, 0.89 in women). CONCLUSIONS: Heritability of height increased across Finnish birth cohorts born in the first half of this century and leveled off after World War II. Environmental factors, compared with genetic factors, appear to be more important among women than men.

Adult↗
PubMed1993

Tracheal sound spectra depend on body height.

Tracheal sounds originate from turbulent flow in upper and central airways. Turbulent flow characteristics are influenced by conduit dimensions. Because tracheal dimensions are a function of body height, we hypothesized that there should be a correlation between sound spectra and body length. We recorded tracheal sounds at standardized airflows in 21 healthy children 9.1 +/- 0.6 yr of age (mean +/- SE) and in 24 healthy adults 30.2 +/- 0.8 yr of age. A contact sensor was attached at the suprasternal notch of the sitting subject, and airflow was measured at the mouth with a calibrated pneumotachograph. Tracheal sounds were low-pass-filtered at 2.4 kHz and digitized at 10 kHz. A 2048 point FFT was applied at a successive 100-ms intervals, using a Hanning data window. Resulting spectra were normalized to a reference power of 0.1 (mV)2/5 Hz. We applied a gating algorithm to extract sounds at inspiratory flows of 1 L/s (+/- 10% tolerance), and we computed average power spectra from the collected samples. We calculated the average spectral power (Pavg), the quartile frequencies below which 25% (Q1), 50% (Q2), and 75% (Q3) of the power in the range of 50 to 2,000 Hz was contained, the spectral edge frequency (SE95) below which 95% of the power was found, and the frequency where spectral power rolled off sharply (Fcut).(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗
PubMed1989

Adult body height, self perceived health and mortality in the Swedish population.

STUDY OBJECTIVE: The purpose of the study was to examine adult body height as an indicator of general health. DESIGN: The study was a survey of a randomly selected sample of the adult Swedish population obtained by the Swedish National Central Bureau of Statistics. PARTICIPANTS: The sample studied was identified in 1980-81 and comprised 14,757 persons aged 16-74. Of these, 12,695 (86%) consented to interview. MEASUREMENTS AND MAIN RESULTS: Information was obtained on adult height, socioeconomic status in childhood and adult life, self perceived health, self reported longstanding illness, and mortality during a six year follow up. The numbers of people in three height groups who considered their general health as bad, who reported any longstanding illness or who died during the follow up were compared with the expected numbers in the same groups. The number of persons with reduced health and the number of deaths was larger than expected in the shortest height group. The excess risk of dying in the shortest group (about 20% higher compared to the tallest group) was reduced but not eliminated when present and childhood socioeconomic group was taken into account. Coronary heart disease mortality in particular was linked to height. The shortest group of men and women reported the largest proportion with bad general health and longstanding illness. For the latter the differences between height groups disappeared after controlling for present socioeconomic status. CONCLUSIONS: There is a detectable excess risk of morbidity and mortality from being short. Assuming that the childhood environment is an important determinant of adult stature it is also important for adult health.

Adolescent↗
PubMed1992

[Comparison of body height and vertebral column length in Chinese parturients].

Spinal anesthesia (SA) is frequently used in parturients undergoing Cesarean sections (C/S). The body height (BH) is commonly believed to be one of the factors influencing the spread of SA, especially in patients with extremes of the BH. Recent studies, however, show that the spread of SA is not related to the BH but to the vertebral column length (VL). This study aims to evaluate the relationship between the BH and VL in Chinese parturients. 258 parturients without vertebral column abnormality undergoing C/S were included in this study. The VL (between C7 prominence and sacral hiatus) of each patient was measured in the right decubitus position. They were divided into 3 groups according to their BH (group A less than 152 cm; group B = in the range of 153-161 cm; group C greater than 162 cm). In each group correlation between the BH and VL was made by linear regression analysis. Also determined is whether there is significant difference between each two groups by unpaired Student's t-test. A p values less than 0.05 is considered as statistical significance. The results of the present study showed that although there exists correlation between the BH and VL, the correlation coefficient (r value) is small in each group (0.29, 0.13, and 0.31 in Group A, B, and C respectively; p less than 0.05). There is, also, no significant difference of the VL among the three groups. Therefore we concluded that the BH and VL did not closely correlate and therefore BH might contribute little to the spread of SA in the Chinese parturients, including those with extremes of BH.

Adolescent↗
PubMed2000

Mandibular growth as related to cervical vertebral maturation and body height.

The purpose of this study was to analyze the validity of 6 stages of cervical vertebral maturation (Cvs1 through Cvs6) as a biologic indicator for skeletal maturity in 24 subjects (15 females, 9 males). The method was able to detect the greatest increment in mandibular and craniofacial growth during the interval from vertebral stage 3 to vertebral stage 4 (Cvs3 to Cvs4), when the peak in statural height also occurred. The prevalence rate of examined subjects who presented with the peak in body height at this interval was 100% for boys and 87% for girls. Statural height and total mandibular length (Co-Gn) showed significant increments during the growth interval Cvs3 to Cvs4 when compared with the growth interval Cvs2 to Cvs3, and significant growth deceleration occurred during the interval Cvs4 to Cvs5 when compared with Cvs3 to Cvs4. Ramus height (Co-Goi) and S-Gn also showed significant deceleration of growth during the interval Cvs4 to Cvs5 when compared with Cvs3 to Cvs4. Cervical vertebral maturation appears to be an appropriate method for the appraisal of mandibular skeletal maturity in individual patients on the basis of a single cephalometric observation and without additional x-ray exposure. The accuracy of the cervical vertebral method in the detection of the onset of the pubertal spurt in mandibular growth provides helpful indications concerning treatment timing of mandibular deficiencies.

Adolescent↗
PubMed1975

A genetic analysis of the normal body-height growth and dental development in man.

A twin and family study on the significance of genetic factors for the variation in certain new variables of dental and body-height development is presented. Evidence of a rather strong genetic regulation of most of the variables was obtained from the analysis of the twins and sibs. The data on cousins did not allow any definite conclusions, and it was not possible to obtain a parent--offspring material. Therefore, the study did not give any information concerning the relative significance of additive genetic variation.

Adolescent↗
PubMed1975

Correlation between somatomedin A in serum and body height development in healthy children and children with certain growth disturbances.

The somatomedin A level in serum was determined in a series of 66 children in whom longitudinal data on body height growth and dental development were available. The series comprised normal children as well as children with some different types of growth disturbances. A high correlation was found between the somatomedin A level and the age at a certain stage of the dental maturity (r equals to minus 0.67) and between the somatomedrin A level and the growth rate at this age (r equals to 0.67). The different groups of patients ranging from pituitary dwarfs to unusually tall children demonstrated a continuous gradient in the correlation between the level of somatomedin A and the different variables of the somatic development.

Abnormalities, Multiple↗