K J Ellis

Summary

Affiliation: Texas Medical Center
Country: USA

Publications

  1. ncbi request reprint Human body composition: in vivo methods
    K J Ellis
    Body Composition Laboratory, United States Department of Agriculture ARS Children s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine and Texas Children s Hospital, Houston, Texas, USA
    Physiol Rev 80:649-80. 2000
  2. ncbi request reprint Bone mineral mass in overweight and obese children: diminished or enhanced?
    K J Ellis
    USDA ARS Children s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
    Acta Diabetol 40:S274-7. 2003
  3. ncbi request reprint The reference child and adolescent models of body composition. A contemporary comparison
    K J Ellis
    USDA ARS Children s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, Texas 77030 2600, USA
    Ann N Y Acad Sci 904:374-82. 2000
  4. ncbi request reprint Reproducibility of fan-beam DXA measurements in adults and phantoms
    Kenneth J Ellis
    Children s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
    J Clin Densitom 7:413-8. 2004
  5. ncbi request reprint Evaluation of body composition in neonates and infants
    Kenneth J Ellis
    Baylor College of Medicine, USDA ARS Children s Nutrition Research Center, 1100 Bates St, Houston, TX 77030, USA
    Semin Fetal Neonatal Med 12:87-91. 2007
  6. ncbi request reprint Bioelectrical impedance methods in clinical research: a follow-up to the NIH Technology Assessment Conference
    K J Ellis
    Department of Pediatrics, USDA ARS Children s Nutrition Research Center, Baylor College of Medicine, Texas Children s Hospital, Houston 77030 2600, USA
    Nutrition 15:874-80. 1999
  7. ncbi request reprint Measurement of body water by multifrequency bioelectrical impedance spectroscopy in a multiethnic pediatric population
    K J Ellis
    Body Composition Laboratory, US Department of Agriculture, Agricultural Research Service, Houston, Texas, USA
    Am J Clin Nutr 70:847-53. 1999
  8. ncbi request reprint Body composition of a young, multiethnic female population
    K J Ellis
    US Department of Agriculture Agricultural Research Service, Children s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030 2600, USA
    Am J Clin Nutr 65:724-31. 1997
  9. ncbi request reprint Human hydrometry: comparison of multifrequency bioelectrical impedance with 2H2O and bromine dilution
    K J Ellis
    United States Department of Agriculture Agricultural Research Service Children s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, Texas 77030, USA
    J Appl Physiol (1985) 85:1056-62. 1998
  10. ncbi request reprint Body-composition assessment in infancy: air-displacement plethysmography compared with a reference 4-compartment model
    Kenneth J Ellis
    USDA ARS Children s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, Texas 77030, USA
    Am J Clin Nutr 85:90-5. 2007

Detail Information

Publications49

  1. ncbi request reprint Human body composition: in vivo methods
    K J Ellis
    Body Composition Laboratory, United States Department of Agriculture ARS Children s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine and Texas Children s Hospital, Houston, Texas, USA
    Physiol Rev 80:649-80. 2000
    ..This review also provides an overview of the present status of this field of research in human biology, including examples of reference body composition data for infants, children, adolescents, and adults...
  2. ncbi request reprint Bone mineral mass in overweight and obese children: diminished or enhanced?
    K J Ellis
    USDA ARS Children s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
    Acta Diabetol 40:S274-7. 2003
    ..When adjusted for height, these differences were less significant. We conclude obese children do not have lower whole-body BMC when compared with leaner children, even when adjusted for height, age, gender, and ethnicity...
  3. ncbi request reprint The reference child and adolescent models of body composition. A contemporary comparison
    K J Ellis
    USDA ARS Children s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, Texas 77030 2600, USA
    Ann N Y Acad Sci 904:374-82. 2000
    ..Our study provides the range of normal body composition of healthy children, aged 5-18 years, and accounts for differences related to gender and ethnicity...
  4. ncbi request reprint Reproducibility of fan-beam DXA measurements in adults and phantoms
    Kenneth J Ellis
    Children s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
    J Clin Densitom 7:413-8. 2004
    ..Comparisons based solely on the use of a spine phantom are insufficient to ensure compatibility of human bone mineral data at other bone sites or for the whole body...
  5. ncbi request reprint Evaluation of body composition in neonates and infants
    Kenneth J Ellis
    Baylor College of Medicine, USDA ARS Children s Nutrition Research Center, 1100 Bates St, Houston, TX 77030, USA
    Semin Fetal Neonatal Med 12:87-91. 2007
    ..This paper provides an evaluation of the different approaches currently available to monitor infant body composition, identifying both their strengths and limitations...
  6. ncbi request reprint Bioelectrical impedance methods in clinical research: a follow-up to the NIH Technology Assessment Conference
    K J Ellis
    Department of Pediatrics, USDA ARS Children s Nutrition Research Center, Baylor College of Medicine, Texas Children s Hospital, Houston 77030 2600, USA
    Nutrition 15:874-80. 1999
    ..This report provides a summary of the panel's findings including a consensus on several technical and clinical issues related to the research use of BIA, and those areas that are still in need of additional study...
  7. ncbi request reprint Measurement of body water by multifrequency bioelectrical impedance spectroscopy in a multiethnic pediatric population
    K J Ellis
    Body Composition Laboratory, US Department of Agriculture, Agricultural Research Service, Houston, Texas, USA
    Am J Clin Nutr 70:847-53. 1999
    ..Few studies, however, have examined the accuracy of BIS in pediatric populations...
  8. ncbi request reprint Body composition of a young, multiethnic female population
    K J Ellis
    US Department of Agriculture Agricultural Research Service, Children s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030 2600, USA
    Am J Clin Nutr 65:724-31. 1997
    ..We conclude that reference values of total body composition for young females need to be ethnic-specific...
  9. ncbi request reprint Human hydrometry: comparison of multifrequency bioelectrical impedance with 2H2O and bromine dilution
    K J Ellis
    United States Department of Agriculture Agricultural Research Service Children s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, Texas 77030, USA
    J Appl Physiol (1985) 85:1056-62. 1998
    ..8 liters), ECW (+/-1.4-1.6 liters), and ICW (2.0-3.1 liters). To improve the accuracy of the BIS measurement for an individual within the age range we have examined, further refinement of the constants used in the BIS analysis is needed...
  10. ncbi request reprint Body-composition assessment in infancy: air-displacement plethysmography compared with a reference 4-compartment model
    Kenneth J Ellis
    USDA ARS Children s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, Texas 77030, USA
    Am J Clin Nutr 85:90-5. 2007
    ..A better understanding of the associations of early infant nutrition and growth with adult health requires accurate assessment of body composition in infancy...
  11. ncbi request reprint Body composition of a young, multiethnic, male population
    K J Ellis
    US Department of Agriculture, Agricultural Research Service, Children s Nutrition Research Center, Houston, TX 77030 2600, USA
    Am J Clin Nutr 66:1323-31. 1997
    ..We conclude that reference values of total body composition for young healthy males need to be ethnic specific...
  12. ncbi request reprint Estimating body fat in African American and white adolescent girls: a comparison of skinfold-thickness equations with a 4-compartment criterion model
    W W Wong
    US Department of Agriculture Agricultural Research Service Children s Nutrition Research Center and Texas Children s Hospital, Department of Pediatrics, Baylor College of Medicine, Houston 77030, USA
    Am J Clin Nutr 72:348-54. 2000
    ..Although skinfold-thickness equations are widely used to estimate body fat, their accuracy in a biracial population of female adolescents has not been established...
  13. ncbi request reprint Body fat estimation in late pregnancy and early postpartum: comparison of two-, three-, and four-component models
    J M Hopkinson
    US Department of Agriculture, Agricultural Research Service, Baylor College of Medicine, Houston, TX, USA
    Am J Clin Nutr 65:432-8. 1997
    ..Pregnancy-corrected two-compartment models produce reliable mean fat mass estimates during pregnancy, but individual fat mass estimates may vary widely from four-component values...
  14. ncbi request reprint Serum leptin concentrations in Caucasian and African-American girls
    W W Wong
    United States Department of Agriculture Agricultural Research Service Children s Nutrition Research Center, Baylor College of Medicine, Houston, Texas 77030, USA
    J Clin Endocrinol Metab 83:3574-7. 1998
    ..2 ng/mL after controlling for differences in maturation, fat mass, and physical fitness. The higher serum leptin levels might play an important role in the accelerated growth and sexual maturation of African-American girls...
  15. ncbi request reprint Ethnic differences in androgens, IGF-I and body fat in healthy prepubertal girls
    R Girgis
    Department of Pediatrics, Baylor College of Medicine and Texas Children s Hospital, Houston, USA
    J Pediatr Endocrinol Metab 13:497-503. 2000
    ..To examine ethnic differences in adrenal androgen production, IGF-I, and IGFBP-1 and -3 in relation to bone age, insulin, and body composition in healthy prepubertal girls...
  16. ncbi request reprint Pubertal African-American girls expend less energy at rest and during physical activity than Caucasian girls
    W W Wong
    United States Department of Agriculture Agricultural Research Service Children s Nutrition Research Center, Houston, Texas 77030, USA
    J Clin Endocrinol Metab 84:906-11. 1999
    ..The lower energy expenditure of the pubertal African-American girls suggests that they are at a higher risk of becoming overweight than their Caucasian counterparts...
  17. ncbi request reprint Multicompartmental analysis of magnesium and calcium kinetics during growth: relationships with body composition
    S A Abrams
    USDA ARS Children s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, USA
    Magnes Res 11:307-13. 1998
    ..Further studies to evaluate these relationships are indicated in situations where either magnesium status or body composition is abnormal...
  18. ncbi request reprint Estimation of body fat in Caucasian and African-American girls: total-body electrical conductivity methodology versus a four-component model
    W W Wong
    USDA ARS Children s Nutrition Research Center and Texas Children s Hospital, Department of Pediatrics, Baylor College of Medicine, Houston 77030, USA
    Int J Obes Relat Metab Disord 24:1200-6. 2000
    ..Obesity has been increasing dramatically in recent years among children, particularly African-American girls. Total-body electrical conductivity (TOBEC) is a simple way to measure body fat with minimal risk...
  19. ncbi request reprint Z score prediction model for assessment of bone mineral content in pediatric diseases
    K J Ellis
    US Department of Agriculture/Agricultural Research Service Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, USA
    J Bone Miner Res 16:1658-64. 2001
    ..5. These preliminary findings indicate that the prediction model should prove useful in determining potential bone mineral deficits in individual pediatric patients...
  20. doi request reprint Whole body counter calibration using Monte Carlo modeling with an array of phantom sizes based on national anthropometric reference data
    R J Shypailo
    USDA ARS Children s Nutrition Research Center, Baylor College of Medicine, 1100 Bates Street, Houston, TX 77030, USA
    Phys Med Biol 56:2979-97. 2011
    ..Nonlinear multiple regression efficiency calibration equations were derived for each gender. Room background correction is critical in improving the accuracy of the WBC calibration...
  21. pmc Normal bone mineral density in cystic fibrosis
    D S Hardin
    Department of Pediatrics, The Feigen Center, Suite 410, 6621 Fannin, Houston, TX 77030, USA
    Arch Dis Child 84:363-8. 2001
    ..Osteoporosis has been reported as a complication of cystic fibrosis (CF)...
  22. ncbi request reprint Calcium absorption, bone mass accumulation, and kinetics increase during early pubertal development in girls
    S A Abrams
    U S Department of Agriculture Agricultural Research Service, Children s Nutrition Research Center, Houston, Texas 77030, USA
    J Clin Endocrinol Metab 85:1805-9. 2000
    ..These data demonstrate, using multiple independent methods, an increase in calcium utilization associated with the earliest physical signs of puberty...
  23. ncbi request reprint Vitamin D receptor Fok1 polymorphisms affect calcium absorption, kinetics, and bone mineralization rates during puberty
    Steven A Abrams
    US Department of Agriculture Agricultural Research Service, Children s Nutrition Research Center, Houston, Texas 77030, USA
    J Bone Miner Res 20:945-53. 2005
    ..It seems that the Fok1 polymorphism directly affects bone mineralization during pubertal growth through an effect on calcium absorption...
  24. doi request reprint DXA: can it be used as a criterion reference for body fat measurements in children?
    Roman J Shypailo
    USDA ARS Children s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
    Obesity (Silver Spring) 16:457-62. 2008
    ..1) will affect whole-body bone mineral results for subjects weighing <40 kg. We wished to reanalyze pediatric whole-body scans in order to assess the impact of the new software on pediatric soft-tissue body composition estimates...
  25. pmc Cross-validation of generalised body composition equations with diverse young men and women: the Training Intervention and Genetics of Exercise Response (TIGER) Study
    Andrew S Jackson
    University of Houston, Department of Health and Human Performance, 3855 Holman Street, Houston, TX 77204 6015, USA
    Br J Nutr 101:871-8. 2009
    ....
  26. ncbi request reprint Bone assessment in children: comparison of fan-beam DXA analysis
    R J Shypailo
    USDA ARS Children s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
    J Clin Densitom 8:445-53. 2005
    ..Investigators must recognize which DXAsoftware version they are using, and which version produced any reference database they may use for comparison...
  27. ncbi request reprint Lean body mass of well-nourished women is preserved during lactation
    K J Motil
    US Department of Agriculture, Agricultural Research Service, Children s Nutrition Research Center, Houston, TX 77030, USA
    Am J Clin Nutr 67:292-300. 1998
    ..Lean body mass was preserved throughout lactation in well-nourished women, suggesting that the metabolic needs of milk protein production were met solely by higher protein intakes of the lactating women...
  28. ncbi request reprint Selected body composition methods can be used in field studies
    K J Ellis
    Body Composition Laboratory, U.S. Department of Agriculture/Agricultural Research Service Children's Nutrition Research Center, Baylor College of Medicine, Houston, TX 77030, USA
    J Nutr 131:1589S-95S. 2001
    ..These newer approaches are compared with the established reference methods. The advantages and limitations of each technique as a field method are presented relative to the corresponding concepts of an ideal method...
  29. ncbi request reprint Visceral and subcutaneous adiposity measurements in adults: influence of measurement site
    Kenneth J Ellis
    Body Composition Laboratory, USDA ARS Children s Nutrition Research Center, Baylor College of Medicine, 1100 Bates Street, Houston, TX 77030, USA
    Obesity (Silver Spring) 15:1441-7. 2007
    ..Intra-site and inter-site differences in SAT, VAT, total adipose tissue, and the VAT/SAT ratio were examined using ANOVA and confidence intervals for pairwise differences between means...
  30. ncbi request reprint Fractional calcium absorption is increased in girls with Rett syndrome
    Kathleen J Motil
    USDA ARS Children s Nutrition Research Center, Houston 77030, USA
    J Pediatr Gastroenterol Nutr 42:419-26. 2006
    ..We hypothesized that decreased intestinal calcium (Ca) absorption relative to dietary Ca intake and increased renal Ca excretion might cause these problems in RTT...
  31. ncbi request reprint Metabolic and behavioral predictors of weight gain in Hispanic children: the Viva la Familia Study
    Nancy F Butte
    US Department of Agriculture, Agricultural Research Service Children s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
    Am J Clin Nutr 85:1478-85. 2007
    ..Despite the high prevalence of overweight among Hispanic children in the United States, definitive predictors of weight gain have not been identified in this population...
  32. ncbi request reprint Evaluating body fat in girls and female adolescents: advantages and disadvantages of dual-energy X-ray absorptiometry
    William W Wong
    US Department of Agriculture Agricultural Research Service Children s Nutrition Research Center and Texas Children s Hospital, Department of Pediatrics, Baylor College of Medicine, Houston 77030, USA
    Am J Clin Nutr 76:384-9. 2002
    ..However, DXA has not been fully evaluated against an independent criterion method of measuring body fatness in young females...
  33. ncbi request reprint Energy requirements during pregnancy based on total energy expenditure and energy deposition
    Nancy F Butte
    US Department of Agriculture Agricultural Research Service Children s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
    Am J Clin Nutr 79:1078-87. 2004
    ..Energy requirements during pregnancy remain controversial because of uncertainties regarding maternal fat deposition and reductions in physical activity...
  34. ncbi request reprint Composition of gestational weight gain impacts maternal fat retention and infant birth weight
    Nancy F Butte
    U S Department of Agriculture Agriculture Research Service, Children s Nutrition Research Center, 1100 Bates Street, Houston, TX 77030, USA
    Am J Obstet Gynecol 189:1423-32. 2003
    ..The purpose of this study was to evaluate how changes in gestational weight and body composition affect infant birth weight and maternal fat retention after delivery in underweight, normal-weight and overweight women...
  35. ncbi request reprint Comment on "Obesity and the environment: where do we go from here?"
    Nancy F Butte
    Department of Pediatrics, Baylor College of Medicine, 1100 Bates Street, Houston, TX 77030, USA
    Science 301:598; author reply 598. 2003
  36. ncbi request reprint A randomized, placebo-controlled trial of combined insulin-like growth factor I and low dose growth hormone therapy for wasting associated with human immunodeficiency virus infection
    P D Lee
    Department of Pediatrics, Baylor College of Medicine, Houston, Texas 77030, USA
    J Clin Endocrinol Metab 81:2968-75. 1996
    ..We conclude that the combination of rhIGF-I and low dose rhGH used in this study had no significant anabolic effect in HIV wasting...
  37. doi request reprint Body composition in infancy: impact on health later in life
    Kenneth J Ellis
    Children s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
    Nestle Nutr Workshop Ser Pediatr Program 65:213-20; discussion 221-4. 2010
    ..Nowadays, there are a number of in vivo techniques that can be used to examine body composition in infancy. In particular, what does the body mass index reflect in terms of body composition for the infant? Is it an adequate index?..
  38. pmc Generalized metabolic bone disease in Neurofibromatosis type I
    Nicola Brunetti-Pierri
    Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Room 635E, Houston, TX 77030, USA
    Mol Genet Metab 94:105-11. 2008
    ..Early identification of patients with osteoporosis may permit more timely and aggressive treatments to prevent the likely substantial morbidity associated with increased fracture risk later in life...
  39. ncbi request reprint Growth hormone improves bone mineral content in children with cystic fibrosis
    Dana S Hardin
    Department of Pediatrics, University of Texas Southwestern Medical School, Houston, TX, USA
    J Pediatr Endocrinol Metab 18:589-95. 2005
    ..Our second aim was to evaluate the effect of one year of treatment with human recombinant growth hormone (GH) on total body BMC...
  40. ncbi request reprint Protease inhibitor therapy improves protein catabolism in prepubertal children with HIV infection
    Dana S Hardin
    Department of Pediatrics, University of Texas Southwestern Medical School, Houston 77030, USA
    J Pediatr Endocrinol Metab 17:321-5. 2004
    ..One action of these drugs is that of lowering the viral burden, and several studies suggest that these drugs result in increased growth and weight velocity. Our second aim was to determine whether PI therapy improves protein catabolism...
  41. pmc Bone mineral content and bone mineral density are lower in older than in younger females with Rett syndrome
    Kathleen J Motil
    USDA ARS Children s Nutrition Research Center, Departments of Pediatrics, Baylor College of Medicine, Houston, Texas 77030, USA
    Pediatr Res 64:435-9. 2008
    ..This study identified associations among low BMD, fractures, and scoliosis, and underscored the need for better understanding of the molecular mechanisms of MECP2 in the regulation of bone mineral metabolism...
  42. pmc Soy isoflavone supplementation and bone mineral density in menopausal women: a 2-y multicenter clinical trial
    William W Wong
    US Department of Agriculture Agricultural Research Service, Children s Nutrition Research Center, Baylor College of Medicine, Houston, TX 77030, USA
    Am J Clin Nutr 90:1433-9. 2009
    ..Although purported to protect against bone loss, the efficacy of soy isoflavone supplementation in the prevention of osteoporosis in postmenopausal women remains controversial...
  43. ncbi request reprint Effect of prebiotic supplementation and calcium intake on body mass index
    Steven A Abrams
    USDA ARS Children s Nutrition Research Center, and Texas Children s Hospital, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, USA
    J Pediatr 151:293-8. 2007
    ..To assess the effects of a prebiotic supplement and usual calcium intake on body composition changes during pubertal growth...
  44. ncbi request reprint In vivo measurement of total body magnesium and manganese in rats
    R Q Zhang
    US Department of Agriculture Agricultural Research Station, Children s Nutrition Research Center, Houston, Texas 77030
    Am J Physiol 257:R1136-40. 1989
    ..0%) with the results of total carcass analysis using atomic absorption. Longitudinal changes in total body Mg and Mn were examined in vivo in two groups of animals maintained on test diets that contained different amounts of Mg...
  45. doi request reprint Impact of body composition on pharmacokinetics of doxorubicin in children: a Glaser Pediatric Research Network study
    Patrick A Thompson
    Texas Children s Cancer Center, 6621 Fannin St, MC3 3320, Houston, TX 77030, USA
    Cancer Chemother Pharmacol 64:243-51. 2009
    ..We studied the relationship between doxorubicin pharmacokinetics and body composition in children with cancer...
  46. ncbi request reprint A combination of prebiotic short- and long-chain inulin-type fructans enhances calcium absorption and bone mineralization in young adolescents
    Steven A Abrams
    US Department of Agriculture Agricultural Research Service, Children s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine and Texas Children s Hospital, Houston, TX 77030, USA
    Am J Clin Nutr 82:471-6. 2005
    ..Results have been inconsistent; however, and no studies have been conducted to determine whether this effect persists with long-term use...
  47. ncbi request reprint Physiologic growth hormone replacement improves fasting lipid kinetics in patients with HIV lipodystrophy syndrome
    Susana D'Amico
    Translational Metabolism Unit and the Division of Diabetes, Endocrinology and Metabolism, Department of Medicine, Baylor College of Medicine, Houston, TX 77030 2600, USA
    Am J Clin Nutr 84:204-11. 2006
    ..The effect of growth hormone (GH) replacement on these lipid kinetic abnormalities is unknown...
  48. ncbi request reprint Incidence and consequences of total body potassium depletion in chronic hemodialysis patients
    George M Dolson
    Renal Section, Department of Medicine, Veterans Affairs Medical Center, 2002 Holcombe Blvd, Houston, TX 77030, USA
    Front Biosci 8:a126-32. 2003
    ..METHODOLOGY AND OUTCOME MEASURE: TBK by whole-body counting of 40K, dialysis potassium losses, and patient demographic characteristics were determined. Survival was evaluated retrospectively after seven years of follow-up...
  49. ncbi request reprint Bone and body composition measurements of small subjects: discrepancies from software for fan-beam dual energy X-ray absorptiometry
    Winston W K Koo
    Carmen and Ann Adams Department of Pediatrics, Obstetrics and Gynecology, Wayne State University, Detroit, Michigan, USA
    J Am Coll Nutr 23:647-50. 2004
    ..A piglet model was used to determine the variations in measurements from different software algorithms used in the same type of dual energy X ray absorptiometry (DXA) instruments from the same manufacturer...