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At least 145 records · Page 8Linked to original sources
PubMed2006

Optimal depth of insertion of left-sided double-lumen endobronchial tubes cannot be predicted from body height in below average-sized adult patients.

BACKGROUND AND OBJECTIVE: The optimal depth of insertion of left-sided double-lumen endobronchial tubes is strongly correlated with body height in average-sized adults. However, this relationship has not been studied in below average-sized adult patients. We investigated whether or not there is a clinically useful relationship in below average-sized adult patients. METHODS: One hundred and ninety six consecutive adult patients undergoing thoracic surgery under one-lung anaesthesia (body height < or = 155 cm) were included in this study. Left-sided double-lumen tubes were inserted under the guidance of a fibre-optic bronchoscope. Optimal depth was defined as the proximal surface of the bronchial cuff positioned just below the carina. RESULTS: There was a statistically significant positive correlation between body height and the optimal depth of insertion (r = 0.61, P < 0.0001); however, the correlation coefficient was low. The actual optimal depth of insertion of one patient was even 4.5 cm shorter than that obtained from the equation. CONCLUSION: Although there was a statistically significant correlation between body height and the optimal depth of insertion of left sided double lumen tubes in adult patients of short stature (< or = 155 cm), clinical application of the equation is not warranted and these tubes should be inserted under direct vision with a fibre-optic bronchoscope.

Aged↗
PubMed1980

Analysis of brain weight. II. Adult brain weight in relation to body height, weight, and surface area.

Analysis of 1,261 adult subjects, ages 25 to 80 years, showed that there is a positive relationship between the brain weight and the body dimensions. The brain weight, however, increases at a slower rate than the body dimensions. There is indication that only a small portion of the brain varies with variation in the body dimensions. Among parameters, the brain weight correlates best with the body surface area, followed by the body height and body weight. The brain weight is related to the body weight partly because it increases with increasing height. When adjusted to body dimensions, the brain weight is greater for white men than for black men and for white women than for black men. Our study also shows that the loss of brain mass proceeds at a slightly faster rate than loss of body mass.

Adult↗
PubMed1987

[Relation between body height and weight in adult humans].

Series of values for body height of adults ranging from 150 to 190 cm and the corresponding body weights for 9 age groups from 15 to 65 a are interrelated by 5 test functions. Results of nonlinear regressions as gained by minimization of the sums of the squares and absolute values of the deviations are summarized in tables for comparison. The last position in the goodness-of-fit is held by the allometric relation W = alpha L beta preceded by the exponential type W = abL. No considerable gain can be realised by taking the expression W = a exp (b Lp). A big step is reached, however, with the change to the form W = W150 + alpha (L-150) beta reducing the linear deviations to about 1/3 or more. Finally the 3-parameter structure W = W A + alpha (L-150) beta yields even closer approximations. Tables with the results for the last 2 relations are given together with a graph for the best approximation.

Adolescent↗
PubMed2006

Cyclical changes of vertebral body heights and bone loss in healthy women after menopause.

Annual changes in vertebral body heights (VHs) and lumbar bone mineral density (LBMD) were evaluated in 120 healthy pre- and post-menopausal women aged 45-74 years. Subjects were divided into groups according to menstrual status and years since menopause (YSM). Vertebral heights were evaluated, using radiological morphometry as the sum of anterior vertebral body heights (AVHs) from T4 to L5 at baseline and exactly 12 months later. Results indicate that the sum of VHs is inversely correlated with advancing age, and the decrease in VHs is not a constant process over time but rather exhibits cyclical damping oscillations. When log-linear trend of VH decrease was transformed into a constant considering annual percentage changes, the presence of a cyclical component of 7 years was evident. Employing a harmonic regression model, the cyclical component was also statistically significant on baseline data. The cyclical decrease of VHs corresponds to an analogous cyclical behavior of LBMD values. These results suggest that a lack of estrogen acts as a synchronizer on bone remodeling, triggering a latent cyclical rhythm of bone loss, accompanied by cyclical bone microarchitecture deterioration and consequent vertebral body deformities, which after menopause persists throughout life. The existence of a chronobiological rhythm of bone loss and trabecular bone strength reduction at vertebral level after menopause, if confirmed, could have important clinical implications.

Aged↗
PubMed1998

Relationship between spine bone mineral density and vertebral body heights.

The aim of this study was to investigate the correlation between lumbar spine bone mineral density (LS-BMD) and the vertebral body heights with advancing age and years since menopause. One hundred and sixty-three women ages 39-74 years (77 normal premenopausal, ages 39-54, and 86 normal postmenopausal, ages 46-74 years) were studied. LS-BMD was measured by dual energy X-ray absorptiometry. Vertebral heights were evaluated, using morphometry, as the sum of anterior (AHs), middle (MHs), and posterior (PHs) vertebral body heights from T4 to L5. The AHs/PHs ratio at the same level was also calculated. AHs, MHs, PHs, and AHs/PHs ratio directly correlated with LS-BMD; the correlations are AHs r = 0.80, P < 0.0001, MHs r = 0.75, P < 0.0001, PHs r = 0.76, P < 0.0001, and AHs/PHs r = 0.66, P < 0.001. Both LS-BMD and AHs are inversely correlated with age, and the regressions fit with both linear and cubic curves. The statistical significance of the correlations persists while maintaining age constant. The linear regression curve of AHs with age indicates that the spine height decrement rate is 2.12 mm/year, corresponding to 7.4 cm in 35 years. AHs decreases immediately after menopause fitting with a cubic curve model, with a decrement rate of about 3 cm in the first 5 years after menopause. We conclude that the measurement of the sum of vertebral body heights could usefully integrate LS-BMD evaluation in the clinical and epidemiological investigation of osteoporosis.

Adult↗
PubMed1992

Body height as a determinant of carotid pulse contour in humans.

AIM: The aim of this study was to assess the effect of body height on arterial wave reflections and the carotid pulse pressure contour in humans. METHODS: In 85 men, the carotid pulse wave and arterial wave reflections were determined from the common carotid artery pulse contour as recorded by applanation tonometry using a Millar micromanometer-tipped probe. The arterial wave reflection was calculated as the ratio of the height of the late systolic peak to the total height of the carotid pulse wave. The reflected wave was timed from the foot of the pressure wave to the foot of the late systolic peak. RESULTS: Multiple regression analysis showed that body height and aortic pulse wave velocity were the principal determinants of travel time of the reflected wave and of arterial wave reflections (P < 0.0001), short stature being associated with a short travel time and increased reflections (P < 0.0001). CONCLUSIONS: Body height is a determinant of arterial wave reflections and peak systolic blood pressure in humans.

Adolescent↗
PubMed1994

[Normal weight of the brain in adults in relation to age, sex, body height and weight].

Based on more than 8000 autopsies of male and female patients without brain diseases the normal brain weight of adult males and females in relation to sex, age, body-weight, and body-height as well as Body Mass Index were calculated. The average brain weight of the adult male was 1336 gr; for the adult female 1198 gr. With increasing age, brain weight decreases by 2.7 gr in males, and by 2.2 gr in females per year. Per centimeter body height brain weight increases independent of sex by an average of about 3.7 gr. Body Mass Index is of minor importance and only relevant in males. Based on these data the independent variables, age and height, were for the first time combined in a nomogram for the calculation of brain weight. The mathematical functions were integrated in a computer program which facilitates the calculation of normal brain weights in individual cases.

Adult↗
PubMed2002

Assessment of the physical development and physical fitness of children and youths with simple body height deficiency.

The aim of this work is an analysis of the process of growth and an assessment of the physical fitness of children and youths with short stature. The material contains results of a long-term investigation of the growth of boys and girls with the diagnosis: simple body height deficiency (hypostatura simplex). The investigation was carried out in Swietokrzyskie Province, Poland, in the years 1980-1997. It comprised 471 individuals: 143 girls aged 5-18 years and 328 boys aged 5-19 years. A different degree of the skeleton age is connected with a different dynamic of growth of short-stature girls and boys. Pubescent increase in the rate of growth occurs in individuals with a considerable retardation of the bone age later, particularly among boys. The growth process lasts longer in them, therefore, the final body height is achieved later and it is greater in individuals whose bone age is concordant with the calendar age. The level of physical working capacity of short-stature children does not show any significant difference in comparison with that in individuals with correct body height, and relative values of the indicators of physical fitness, related to body mass, are even higher in short-stature children. Individuals with a greater body height deficiency are characterised by a lower level of physical fitness.

Adolescent↗
PubMed1989

Standards for the predictive accuracy of short term body height and lower leg length measurements on half annual growth rates.

Determinations of body height and calculations of growth velocity are still the major parameters for the assessment of normal and aberrant growth. The present study was performed to investigate the minimum time interval between consecutive measurements that is necessary for a statement on significant length increment both of total body height and lower leg length. We present standards for the predictive accuracy of short term measurements for the prediction of the conventional half annual growth rate. We also provide centiles of the predictive error that occurs when the difference between two consecutive measurements is used to determine a half annual growth rate.

Adolescent↗
PubMedDate not supplied

Weight, height, body mass index and prevalence of obesity among the adult population in Bahrain.

PRIMARY OBJECTIVES: To determine anthropometric measurements (weight, height, body mass index, BMI), and the prevalence of overweight and obesity based on BMI. METHODS AND PROCEDURES: A cross-sectional survey of 514 Bahraini native adults aged 30-79 years was selected from households using clustering sampling technique. OUTCOMES AND RESULTS: Findings indicate that Bahraini adults were shorter but heavier, and have higher mean BMI than their Western counterparts, suggesting a trend to obesity. The overall prevalence of overweight and obesity was 35.2% and 21.2% for men, while that for women was 31% and 48.7%, respectively. CONCLUSIONS: The results of this study confirmed the data in other Arabian Gulf countries, as obesity is a major public health problem among the adult population. Anthropometrics provided in this study can be used as baseline data for the adult population of Bahrain.

Adult↗
PubMed1998

[Study on the relationship among ossification of finger's bone, maxillary and mandibular lengths and body height for Shanghai adolescents aged between 11-15 years old]

OBJECTIVE:To research the intrinsic relationship in the growth and development progress of adolescents and to provide scientific basis for orthodontic diagnosis and treatment.METHODS:Sample included 125 Shanghai adolescents between 11-15 years old, and the relationship among maxillary length, mandibular length, ossification of finger's bone, body height and the age of first coming of menstruation on female was studied.RESULTS:The ossification of finger's bone, the increase of maxilla and mandibular lengths and the body height of Shanghai adolescents between 11-15 years old keep the same pace tendency. Female goes into the young quick growing period 2 years earlier than male, but from about 13 years old the growing speed of male is apparently more quick than that of female. When the ossification of finger's bone is nearly 100%, the body height and the mandibular length of male still possesses great growing capacity. The age of sesamoid bone appearance for both male and female and the age of first coming menstruation for female are getting earlier when comparing with others regions.CONCLUSION: There is a close relationship among ossification of finger's bone, maxilla and mandibular lengths and body height of adolescents. Understanding the intrinsic rule correctly has the guiding significance to early diagnosis and treatment in clinical orthodontics.

Journal Article↗
PubMed1983

Longitudinal study of body height, radius length and skeletal maturity in Danish boys with cleft lip and palate.

Body height, radius length and skeletal maturity were registered longitudinally in 48 boys with combined cleft lip and palate (CLP) and compared with measurements in a non-cleft control group. Age range was from 6 to 20 yr. Skeletal maturity was evaluated according to the TW2 method. Distance and velocity curves for radius length and body height were determined by means of a computer program which for each month calculated the median and percentiles of the distribution. Compared to the control group the CLP boys were slightly shorter from 6 to 18 yr of age. The velocity curves revealed that pubertal growth maximum occurred on an average 6 months later in the CLP boys and that the pubertal growth spurt was less marked. However, the total growth period was prolonged thus enabling the CLP group to catch up with the control group. Skeletal maturity was retarded during the whole period when compared to normal children. It is suggested that the early feeding problems and recurrent infections of the upper airways combined with the surgical procedures account for an essential part of the delay in the present CLP group.

Adolescent↗
PubMed2005

Length of the human vocal folds: proposal of mathematical equations as a function of gender and body height.

To obtain a mathematical equation that could estimate the length of the intermembranous part of the vocal fold as a function of body height and gender, we removed the larynges from 39 cadavers (22 men and 17 women) after recording the subject's height, age, and cause of death. The dimensions of the vocal folds were determined with a digital pachymeter. The following equations were obtained: y = 0.18x - 15.8 for men and y = 0.24x - 28.1 for women, where y is the length of the intermembranous part of the vocal folds in millimeters and x is the height of the individual in centimeters. We conclude that it is possible to estimate the normal expected length of the intermembranous portion of the male and female vocal folds on the basis of body height.

Adult↗
PubMed2001

Gender differences in the timing of arterial wave reflection beyond differences in body height.

OBJECTIVES: The timing of arterial wave reflection affects the shape of the arterial waveform and thus is a major determinant of pulse pressure. This study assessed differences in wave reflection between genders beyond the effect of body height. METHODS: From 1123 elderly (aged 71 +/- 5 years) currently untreated hypertensives, we selected 104 pairs of men and women with identical body height (average 164 +/- 4 cm). All subjects underwent echocardiography, including measurement of aortic arch expansion, automated blood pressure measurements, measurement of ascending aortic blood flow and simultaneous carotid artery tonometry. RESULTS: Women had higher pulse (80 +/- 17 versus 74 +/- 17 mmHg, P < 0.05) and lower diastolic pressure (79 +/- 11 versus 82 +/- 10 mmHg, P < 0.05). Whilst heart rate was similar, women had a longer time to the systolic peak (210 +/- 28 versus 199 +/- 34 ms, P < 0.01) and a longer ejection time (304 +/- 21 versus 299 +/- 25 ms, P < 0.001). Wave reflection occurred earlier in women (time between maxima 116 +/- 55 versus 132 +/- 47 ms, P < 0.05) and augmentation index was higher (36 +/- 11 versus 28 +/- 12%, P < 0.001). Aortic diameter was smaller in women and the aortic arch was stiffer (median Ep 386 versus 302 kN/m2, P < 0.05). Hence, systemic arterial compliance was less in women (0.8 +/- 0.2 versus 1.0 +/- 0.3 ml/mmHg). CONCLUSIONS: We conclude that elderly hypertensive men and women have a different timing of both left ventricular ejection and arterial wave reflection when both genders are matched for body height. Women have smaller and stiffer blood vessels resulting in an earlier return of the reflected wave, which is likely due to an increased pulse wave velocity in women.

Aged↗
PubMed2006

The effects of adult-type hypolactasia on body height growth and dietary calcium intake from childhood into young adulthood: a 21-year follow-up study--the Cardiovascular Risk in Young Finns Study.

OBJECTIVE: The effect of adult-type hypolactasia, caused by the lactase-phlorizin hydrolase C/C-13910 genotype, on growth is unknown. We studied whether this polymorphism was associated with body height growth, the use of milk products, or dietary calcium intake. METHODS: A prospective cohort study was performed among 3596 randomly selected Finnish children and adolescents (3-18 years of age) in 1980, with reexamination in 1983, 1986, and 2001 (after a 21-year follow-up period). Lactase-phlorizin hydrolase C/T-13910 polymorphism was determined for 2265 participants in 2002. Nutrient intakes were measured for 1137, 858, and 1031 subjects in 1980, 1986, and 2001, respectively. RESULTS: The lactase-phlorizin hydrolase C/T-13910 polymorphism was not related to mean height growth speed for either boys or girls or to final mean body height in adulthood. The consumption of milk products, protein, and calcium was lowest for female subjects with the lactase-phlorizin hydrolase C/C-13910 genotype over the study years, but there were no genotype-related differences in the intake of vitamin D. For boys, significant differences were found in the consumption of milk products but not in the mean dietary intake of calcium, protein, or vitamin D. CONCLUSIONS: The lactase-phlorizin hydrolase C/C-13910 genotype was not associated with mean growth speed or final mean body height for either boys or girls. However, it contributed significantly to milk product consumption and dietary calcium intake from childhood into young adulthood.

Adolescent↗
PubMedDate not supplied

Spine bone mineral density and vertebral body height are altered by alcohol consumption in growing male and female rats.

Alcohol, consumed for extended periods by growing male and female rats, impairs osteogenesis and reduces bone size and mass. The skeletal sites of experimental animals commonly chosen for an evaluation of bone mechanical characteristics and architectural properties, bone matrix gene expression, tissue concentrations of growth factors, and bone mineral density (BMD) have been the tibiae and femora. Far less attention has been focused on the spine and the effects of alcohol on vertebral BMD and vertebral body height. Fifteen male and 15 female Sprague-Dawley rats (aged 30 days) were divided into three groups: an alcohol-fed group, matched to a pair-fed non-alcohol isocaloric-fed control group with animals of the same sex, and an ad libitum-fed control group. Alcohol-fed animals received a Lieber-DeCarli liquid diet containing 36% of caloric intake as alcohol; isocaloric pair-fed rats received the same diet without alcohol. After 45 days of feeding, the lumbar spine was removed. The fourth lumbar vertebra from each spine was dissected, and the vertebral body height was measured. Lumbar vertebral body height was significantly reduced by alcohol consumption in both male and female rats compared with findings for either control group. Cancellous and cortical BMD of the vertebral body was determined by peripheral quantitative computed tomography (pQCT). Male and female rats (aged 75 days) in the ad libitum-fed group had similar vertebral body cortical and cancellous BMD, with cortical BMD being greater than cancellous BMD. Lumbar vertebral body cancellous and cortical BMD declined for both male and female rats in response to alcohol consumption for 45 days compared with findings for either control group. More BMD loss occurred from cancellous than from cortical bone in both sexes after chronic alcohol consumption. Chronic alcohol consumption by growing rats results in vertebral growth reduction and vertebral osteopenia.

Alcohol Drinking↗