+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Variability of body density in ambulatory subjects measured at different days

Variability of body density in ambulatory subjects measured at different days

American Journal of Clinical Nutrition 34(1): 78-81

The variability of weight in air and underwater, residual lung volume and body density was studied in ambulatory men who were advised to maintain a constant diet and level of physical activity for four days (group I) and 60 days (group II). It was assumed that data obtained from group I which included volunteers familiar with the densitometric procedure would yield more reliable information than from group II which consisted of inexperienced subjects. Weight underwater and residual lung volume were the most variable measurements. The precision in body density varied from 0.0008 to 0.0018 g.ml-1, equivalent to 0.32 and 0.73% body fat in groups I and II, respectively. The data suggest that familiarity with the technique did not influence the reliability of body density measurement. Body composition as indicated by body density appears to remain constant over relatively long periods during which diet and levels of physical activity are controlled.

Please choose payment method:

(PDF emailed within 0-6 h: $19.90)

Accession: 001030132

Download citation: RISBibTeXText

PMID: 7446462

DOI: 10.1093/ajcn/34.1.78

Related references

The Variability in Ambulatory Blood Pressure Assessments on Two Non-consecutive Days. Medicine & Science in Sports & Exercise 42: 810-811, 2010

Variability in physical activity patterns as measured by the SenseWear Armband: how many days are needed?. European Journal of Applied Physiology 112(5): 1653-1662, 2013

Body radioactivity and radiation dose from 40K in Bangladeshi subjects measured with a whole-body counter. Radiation Protection Dosimetry 130(2): 236-238, 2008

Variability of nonsustained ventricular tachy cardia on ambulatory electro cardiographic recording results of 3 days of ambulatory ecg in 113 patients with ventricular tachy cardia. Journal of the American College of Cardiology 3(2 PART 2): 619, 1984

Day-to day variability of cardiac pressure values in horses measured with right heart catheterization on 3 consecutive days. Berliner und Munchener Tierarztliche Wochenschrift 119(9-10): 400-409, 2006

Variability of arterial pressure and heart rate measured at two periods of 15 minutes to 15 days intervals. Archives des Maladies du Coeur et des Vaisseaux 80(6): 1005-1010, 1987

The range of end tidal PCO2 measured noninvasively using an ambulatory capnograph in normal subjects. European Respiratory Journal Supplement 10(25): 47S-48S, Sept, 1997

The reliability of estimates of body width and their relationship to current measured body size among anorexic and normal subjects. Psychological Medicine 14(4): 843-846, 1984

Variability of ambulatory arterial stiffness index and of 24-h blood pressure values in patients monitored for 6 consecutive days. Journal of Hypertension 26(7): 1501-2; Author Reply 1502-3, 2008

Body K and 40K in Chinese subjects measured with a whole-body counter. Health Physics 57(5): 743-746, 1989

Between subjects and within subjects variability of the sleep stage latencies and their relations to motor activity and body temperature. Levin, P And W P Koella (Ed ) Sleep 1974 Instinct, Neurophysiology, Endocrinology, Episodes, Dreams, Epilepsy And Intracranial Pathology Proceedings Of The Second European Congress Rome, Italy, April 8-11, 1974 Xi+525p Illus S Karger: Basel, Switzerland; New York, N Y , U S A ISBN 3-8055-2069-7: 364-366, 1975

Comparison of the variability of the QT interval from ambulatory electrocardiography in normal and CAD subjects. Clinical Pharmacology & Therapeutics 73(2): P32, 2003

Interrelationships between body weights measured through 3 days at different growth stages in 3 lines of mice. Zwierzeta Laboratoryjne 11(1-2): 11-16, 1974

Impact of blood pressure measured in ambulatory conditions on the 2 year outcome of microalbuminuria in Type 1 diabetic subjects. Diabete & Metabolisme 20(5): 481-484, 1994

Study of the variability of body weight as a function of body height in subjects from 4 to 12 years of age, in the Italian ethnic group of Bolzano. Rivista Italiana D'igiene 26(5): 697-704, 1966