Impact of direct substitution of arm span length for current standing height in elderly COPD
نویسندگان
چکیده
BACKGROUND Arm span length is related to standing height and has been studied as a substitute for current standing height for predicting lung function parameters. However, it has never been studied in elderly COPD patients. PURPOSE To evaluate the accuracy of substituting arm span length for current standing height in the evaluation of pulmonary function parameters and severity classification in elderly Thai COPD patients. MATERIALS AND METHODS Current standing height and arm span length were measured in COPD patients aged >60 years. Postbronchodilator spirometric parameters, forced vital capacity (FVC), forced expiratory volume in first second (FEV1), and ratio of FEV1/FVC (FEV1%), were used to classify disease severity according to global initiative for chronic obstructive lung disease criteria. Predicted values for each parameter were also calculated separately utilizing current standing height or arm span length measurements. Student's t-tests and chi-squared tests were used to compare differences between the groups. Statistical significance was set at P<0.05. RESULTS A total of 106 COPD patients with a mean age of 72.1±7.8 years, mean body mass index of 20.6±3.8 kg/m(2), and mean standing height of 156.4±8.3 cm were enrolled. The mean arm span length exceeded mean standing height by 7.7±4.6 cm (164.0±9.0 vs 156.4±8.3 cm, P<0.001), at a ratio of 1.05±0.03. Percentages of both predicted FVC and FEV1 values based on arm span length were significantly lower than those using current standing height (76.6±25.4 vs 61.6±16.8, P<0.001 and 50.8±25.4 vs 41.1±15.3, P<0.001). Disease severity increased in 39.6% (42/106) of subjects using arm span length over current standing height for predicted lung function. CONCLUSION Direct substitution of arm span length for current standing height in elderly Thai COPD patients should not be recommended in cases where arm span length exceeds standing height by more than 4 cm.
منابع مشابه
Predictive equations for estimation of stature from knee height, arm span, and sitting height in Indonesian Javanese elderly people
The purpose of this study was to develop the predictive equations for estimation of stature, using knee height, arm span and sitting height in Indonesian Javanese elderly people. Eight-hundred and twelve healthy elderly people (295 men and 517 women) participated in this cross sectional study. Standing height, weight, knee height, arm span and sitting height were measured. The Chumlea and Elean...
متن کاملDiagnostic test of predicted height model in Indonesian elderly: a study in an urban area
Aim In an anthropometric assessment, elderly are frequently unable to measure their height due to mobility and skeletal deformities. An alternative is to use a surrogate value of stature from arm span, knee height, and sitting height. The equations developed for predicting height in Indonesian elderly using these three predictors. The equations put in the nutritional assessment card (NSA) of ol...
متن کاملارتباط بین ویژگی های آنتروپومتریکی و عملکرد شنای کرال سینه و قورباغه در دختران نوجوان شناگر
Objective: The aim of this study was to investigate the relationship between anthropometric characteristics and crawl and breaststroke performance in adolescent girl swimmers with an emphasis on ratio of length and width of limbs to the height of subjects. Methods: Twenty adolescent female swimmers voluntarily participated in this study. Anthropometric variables, including height , lengt...
متن کاملThe use of arm span as a predictor of height: A study of South Indian women.
This study was undertaken to find out the relationship between various body parameters to identify the measurement that correlates most closely to stature. Sitting height, standing height, arm span and leg lengths of 505 healthy women between the ages of 20 and 29 were measured. The relationship between the parameters was determined by computing correlation coefficients and 95% confidence inter...
متن کاملDetermination of Stature from Upper Arm Length in Medical Students
Introduction: In order to make a dimensional proportion between human and equipment or environment, anthropometric data bank is essential. Anthropometry has an important role in industrial management and ergonomic design. This information is needed to be collected regularly in every society. The purpose of this study was to determine arm length to height ratio according to gender in adult...
متن کامل