The use of air displacement plethysmography in children and adolescents with cystic fibrosis

European Journal of Clinical Nutrition
A J MurphyP S W Davies

Abstract

The purpose of this paper was to evaluate the use of air displacement plethysmography (ADP) in children and adolescents with cystic fibrosis (CF). Specifically, the primary aim of this study was to compare estimates of fat-free mass (FFM) measured from ADP and dual energy X-ray absorptiometry (DEXA) in children and adolescents with CF. The secondary aim was to compare the effect of using predicted thoracic gas volume (VTG) and measured VTG for the calculation of FFM by ADP in this population. Cross-sectional FFM measurements were taken using ADP and DEXA in 52 children and adolescents with CF, ranging in age from 6.3 to 16.6 y. Bland-Altman analysis showed that ADP values of FFM were on average 0.59 kg higher than DEXA values (95% limits of agreement = 3.61 to -2.43 kg); however this difference was not significant. There was no significant correlation (r = -0.26, P = 0.07) between the mean FFM and difference in FFM between ADP and DEXA. Using either predicted or measured VTG did not significantly affect FFM estimates in individuals with CF who had normal lung function (bias = -0.39 +/- 0.86 kg; r = -0.02, P = 0.93). ADP is an appropriate technique for use in children and adolescents with CF.

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Citations

Apr 1, 2008·Journal of Pediatric Hematology/oncology·Melinda WhiteAlexia Murphy
Jun 11, 2016·Journal of Pediatric Rehabilitation Medicine·Michele PolfussKathleen Sawin
Oct 4, 2011·JPEN. Journal of Parenteral and Enteral Nutrition·Melinda WhiteAlexia Murphy
Apr 10, 2019·Nutrition in Clinical Practice : Official Publication of the American Society for Parenteral and Enteral Nutrition·Catherine Larson-Nath, Praveen Goday
Mar 28, 2006·Radiation Protection Dosimetry·P J Dimbylow
Nov 9, 2016·Scientific Reports·Jerri Chiu Yun LingZahurin Mohamed
May 13, 2008·Journal of Clinical Child and Adolescent Psychology : the Official Journal for the Society of Clinical Child and Adolescent Psychology, American Psychological Association, Division 53·Laurie Miller BrotmanPatrick Shrout
Aug 12, 2015·European Child & Adolescent Psychiatry·Praveetha PatalayJessica Deighton
Oct 12, 2010·The American Journal of Clinical Nutrition·Jane E WilliamsMary S Fewtrell
Jan 9, 2007·The American Journal of Clinical Nutrition·Kenneth J EllisWilliam C Heird
May 29, 2018·Journal of the Academy of Nutrition and Dietetics·Mary Rozga, Deepa Handu

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