Pulmonary function studies in healthy non-smoking women of Calcutta

Chatterjee, Soumendranath; Saha, Dipali

doi:10.1080/03014469300002472

Cited by 16 publications

(22 citation statements)

References 7 publications

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“…As the expiratory flow rates are highest at noon, the experiments were conducted before lunch at noon (22) and all the subjects were encouraged and motivated to attain the maximum possible effort. After a couple of practice runs, at least three satisfactory efforts were recorded for each volunteer with at least 3-5 min rest between consecutive trials as per standard norm and the highest value was accepted (8,20). All pulmonary function measurements as well as the anthropometric measurements were performed in one sitting on the same day and the PFTs were expressed at body temperature and pressure saturated with water vapor.…”

Section: Preparation Of Subjectsmentioning

confidence: 99%

“…Palmer respiratory hand pump was used to calibrate the expirograph daily. All the measurements were performed according to the standard guideline (2,8). As the expiratory flow rates are highest at noon, the experiments were conducted before lunch at noon (22) and all the subjects were encouraged and motivated to attain the maximum possible effort.…”

Section: Preparation Of Subjectsmentioning

confidence: 99%

“…Comparison of the lung function measurements with previously reported data from similar and other national as well as international counterparts. c. Derivation of prediction equations for assuming the lung volumes of the presently studied population and comparison of these equations with the earlier norms reported by Chatterjee and Saha (8).…”

Section: Introductionmentioning

confidence: 99%

“…Chatterjee and Saha (8) reported the pulmonary function profile of healthy, nonsmoking women (age: 20-59 years) of Kolkata, India, 27 years back. Therefore, there is a need to re-investigate the relevance of the norms proposed in this study.…”

Section: Introductionmentioning

confidence: 99%

“…These spirometric tests have been found to reflect the operational disorder as well as the severity of airway impedance. There are reports available on the normal pulmonary function measurements and the effects of ethnicity, anthropometric variables, and habitat on those parameters for different populations including European (5,12,38,41,43), North American (9,14,30), Indian (3,4,7,8,11,27,32,33,39,42,49), Chinese (10,13,50), Malaysian (2,36,37,46,47), and other non-Caucasian (16,28) populations.…”

Section: Introductionmentioning

confidence: 99%

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Pulmonary function in young females of Kolkata, India – Revisited

et al. 2016

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Rapid economic and industrial growths imposed significant impact on human health including the pulmonary health. Questions were raised regarding the validity of the existing prediction norms of pulmonary function tests (PFTs) in a particular population. The present study was conducted to investigate the applicability of the existing norms for PFTs in young healthy non-smoking female university students of Kolkata, India. Significant difference was noted in vital capacity (VC), forced vital capacity (FVC), and forced expiratory volume in 1 s (FEV 1 ) when the present data were compared with the earlier study in similar population. Correlation statistic revealed significant relationship of age and body height with all the PFT parameters. Body mass had significant correlation with VC, FVC, FEV 1 as a percentage of FVC (FEV 1% ), and peak expiratory flow rate (PEFR). Regression equations have been computed for predicting PFTs from age and body height. There has been a change of PFTs in the studied population for the last couple of decades due to increased environmental pollution in the course of economical and industrial developments. Regression equations computed in this study are not only recommended to predict PFT parameters in the studied population, but they are also considered more reliable owing to their substantially smaller standard error of estimate than those proposed in the previous study.

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Section: Preparation Of Subjectsmentioning

confidence: 99%

Section: Preparation Of Subjectsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Pulmonary function in young females of Kolkata, India – Revisited

et al. 2016

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Climatic influences on human body size and proportions: Ecological adaptations and secular trends

Katzmarzyk

Leonard

1998

Am. J. Phys. Anthropol.

322

188

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This study reevaluates the long-standing observation that human morphology varies with climate. Data on body mass, the body mass index [BMI; mass (kg)/stature (m)2], the surface area/body mass ratio, and relative sitting height (RSH; sitting height/stature) were obtained for 223 male samples and 195 female samples derived from studies published since D.F. Roberts' landmark paper "Body weight, race, and climate" in 1953 (Am. J. Phys. Anthropol. 11:533-558). Current analyses indicate that body mass varies inversely with mean annual temperature in males (r=-0.27, P < 0.001) and females (r=-0.28, P < 0.001), as does the BMI (males: r=-0.22, P=0.001; females: r=-0.30, P < 0.001). The surface area/body mass ratio is positively correlated with temperature in both sexes (males: r=0.29, P < 0.001; females: r=0.34, P < 0.001), whereas the relationship between RSH and temperature is negative (males: r=-0.37, P < 0.001; females: r=-0.46, P < 0.001). These results are consistent with previous work showing that humans follow the ecological rules of Bergmann and Allen. However, the slope of the best-fit regressions between measures of body mass (i.e., mass, BMI, and surface area/mass) and temperature are more modest than those presented by Roberts. These differences appear to be attributable to secular trends in mass, particularly among tropical populations. Body mass and the BMI have increased over the last 40 years, whereas the surface area/body mass ratio has decreased. These findings indicate that, although climatic factors continue to be significant correlates of world-wide variation in human body size and morphology, differential changes in nutrition among tropical, developing world populations have moderated their influence.

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Lung function in Indian twin children: comparison of genetic versus environmental influence

Chatterjee

Das

1995

Annals of Human Biology

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The relative contributions of genetic and environmental components in the variability of lung function measurements were studied in 54 twin pairs. Thirty pairs of monozygote (MZ) twins and 24 pairs of dizygotic (DZ) twins were examined. All measurements were made with 9-litre closed-circuit-type expirographs using standard spirometric techniques, except for peak expiratory flow rate (PFER) which was recorded with a Wright peak flow meter. Within-pair variances for inspiratory capacity (IC), vital capacity (VC), forced vital capacity (FVC), forced expiratory volume in 1 second (FEV1), forced mid-expiratory flow (FEV25-75%), forced end-expiratory flow (FEF75-85%), maximum expiratory flow (FEF200-1200ml), forced maximum voluntary ventilation MVVF) and PEFR were significantly smaller (p < 0.01) in MZ twins than in DZ twins. Tidal volume (VT), inspiratory reserve volume (IRV), expiratory reserve volume (ERV), forced expiratory volume in 1 second as a percentage of forced vital capacity (FEV1%), and forced expiratory time (FET) were not significantly different. Within-pair correlations were all higher in MZ than DZ twins. All measurements except for VT and PEFR showed high levels of heritability (23-99%). All measurements were positively and significantly correlated with physical characteristics such as weight, standing height, surface area, arm-span, chest circumference and age, except FEV1% and FET. Residual values adjusted for physical characteristics showed similar results to unadjusted values in most cases. These data indicate that major lung function measurements are possibly influenced more by genetic than environmental factors. Genetically influenced measurements show higher levels of heritability estimates and suggest that genetic determination of lung function is possibly independent of the influence of physical characteristics.

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Pulmonary function studies in healthy non-smoking women of Calcutta

Cited by 16 publications

References 7 publications

Pulmonary function in young females of Kolkata, India – Revisited

Pulmonary function in young females of Kolkata, India – Revisited

Climatic influences on human body size and proportions: Ecological adaptations and secular trends

Lung function in Indian twin children: comparison of genetic versus environmental influence

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