Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Variability: Analysis01:11

Variability: Analysis

Measures of variability are statistical metrics that reveal the dispersion pattern within a dataset. They are pivotal in biostatistics, providing insights into the heterogeneity within health and biological data. Variability signifies the degree to which data points diverge from one another, helping researchers understand the potential range of values and associated uncertainty within the data.
The range is a simple measure of variability, indicating the difference between the highest and...
Measurement of Bioavailability: Pharmacokinetic Methods01:30

Measurement of Bioavailability: Pharmacokinetic Methods

Pharmacokinetics is a vital branch of pharmacology that examines how drugs are absorbed, distributed, metabolized, and excreted by the body. Two key methodologies in pharmacokinetics are plasma drug concentration studies and urinary drug excretion analyses, both of which provide critical insights into a drug's therapeutic efficacy and bioavailability.Plasma Drug Concentration-Time StudiesPlasma drug concentration-time studies involve analyzing blood samples at specific intervals to quantify...
Temperature Measurement Sites01:14

Temperature Measurement Sites

A thermometer measures body temperature. The common sites for measuring body temperature are the oral cavity, axillary region, temporal artery, and skin surface, such as the forehead, abdomen, and axilla. True core body temperature is assessed in the rectum, tympanic membrane, pulmonary artery, esophagus, and urinary bladder.
Oral: When assessing oral temperature, the thermometer tip should be placed under the tongue in the posterior sublingual pocket. It offers accurate readings and can be...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Does Metabolically Healthy Obesity Really Exist: Going Toward New Definitions.

The Journal of clinical endocrinology and metabolism·2026
Same author

Comment on: Assessment of body composition following bariatric surgery using deuterium oxide derived method in adults with morbid obesity.

Surgery for obesity and related diseases : official journal of the American Society for Bariatric Surgery·2026
Same author

Impact of Different Exercise Modalities on Visceral Adipose Tissue in Normal Weight and Low-Overweight Individuals: A Systematic Review and Meta-Analysis.

Biological research for nursing·2026
Same author

Integrating Planetary Health in Health Guidelines (GRADE Guidance 46).

Annals of internal medicine·2026
Same author

Follow-up effects of exercise-based interventions on physical performance in cancer survivors: a systematic review and meta-analysis.

Journal of cancer survivorship : research and practice·2026
Same author

Conversion of DXA body composition measurements across different devices: A standardized approach.

European journal of clinical nutrition·2026
Same journal

Gut Microbiome and Environmental Enteric Dysfunction Are Unchanged by 18 Months of Small-Quantity Lipid-Based Nutrient Supplementation among Young Children in Lusaka, Zambia.

The British journal of nutrition·2026
Same journal

The Effect of Asparagus Stem Consumption on Health Outcomes in Adults: A Systematic Review.

The British journal of nutrition·2026
Same journal

Adherence to a Healthy Plant-Based Diet is Associated with Adiposity Indicators in Costa Rican Adults.

The British journal of nutrition·2026
Same journal

The Relationship between Food Literacy and Dietary Intake and Diet Quality in Adults: A Cross-Sectional Study.

The British journal of nutrition·2026
Same journal

Diet quality and risk of using medication for hypertension up to 11 years after delivery: Testing the predictive validity of a proposed revision of the Nutri-Score and the current Nutri-Score in the NewTools project.

The British journal of nutrition·2026
Same journal

The association of last meal timing and the quality of dinner with sleep quality: a cross-sectional study on Iranian adults.

The British journal of nutrition·2026
See all related articles
  1. Home
  3. Within- And Between-day Reliability Of Laboratory-based Body Composition Assessment Methods.
  1. Home
  3. Within- And Between-day Reliability Of Laboratory-based Body Composition Assessment Methods.

Related Experiment Video

Assessment of Child Anthropometry in a Large Epidemiologic Study
09:36

Assessment of Child Anthropometry in a Large Epidemiologic Study

Published on: February 2, 2017

Within- and Between-Day Reliability of Laboratory-Based Body Composition Assessment Methods.

Carina M Velasquez1, Christine M Florez1, Christian Rodriguez2

  • 1Energy Balance & Body Composition Laboratory, Department of Kinesiology and Sport Management, Texas Tech University, Lubbock, TX, USA.

The British Journal of Nutrition
|June 16, 2026

View abstract on PubMed

Summary
This summary is machine-generated.

This study assessed the reliability of common body composition methods. Dual-energy X-ray absorptiometry (DXA) showed the best reliability, indicating excellent consistency for tracking body fat and mass.

Keywords:
Air Displacement PlethysmographyBioimpedanceBiological ErrorDual-energy X-ray absorptiometryTechnical Error

More Related Videos

Clinical Anthropometrics and Body Composition from 3-Dimensional Optical Imaging
06:48

Clinical Anthropometrics and Body Composition from 3-Dimensional Optical Imaging

Published on: June 7, 2024

Evaluation of Changes in Hydration and Body Cell Mass with Bioelectrical Impedance Analysis after Exercise Program for Rheumatoid Arthritis Patients
07:44

Evaluation of Changes in Hydration and Body Cell Mass with Bioelectrical Impedance Analysis after Exercise Program for Rheumatoid Arthritis Patients

Published on: July 14, 2023

Related Experiment Videos

Assessment of Child Anthropometry in a Large Epidemiologic Study
09:36

Assessment of Child Anthropometry in a Large Epidemiologic Study

Published on: February 2, 2017

Clinical Anthropometrics and Body Composition from 3-Dimensional Optical Imaging
06:48

Clinical Anthropometrics and Body Composition from 3-Dimensional Optical Imaging

Published on: June 7, 2024

Evaluation of Changes in Hydration and Body Cell Mass with Bioelectrical Impedance Analysis after Exercise Program for Rheumatoid Arthritis Patients
07:44

Evaluation of Changes in Hydration and Body Cell Mass with Bioelectrical Impedance Analysis after Exercise Program for Rheumatoid Arthritis Patients

Published on: July 14, 2023

Area of Science:

  • Exercise Physiology
  • Body Composition Analysis
  • Measurement Reliability

Background:

  • Accurate body composition assessment is crucial for health and performance monitoring.
  • Understanding the reliability of different measurement techniques is essential for interpreting changes over time.
  • Laboratory-based methods are frequently used but require validation for consistency.

Purpose of the Study:

  • To evaluate the within- and between-day reliability of various laboratory-based body composition assessment methods.
  • To compare the technical error of measurement (TEM) and intraclass correlation coefficients (ICCs) across different devices.
  • To identify the most reliable methods for tracking body composition changes in healthy adults.

Main Methods:

  • Eighteen healthy adults underwent repeated assessments using dual-energy X-ray absorptiometry (DXA) scanners, air displacement plethysmography (ADP), multi-frequency bioelectrical impedance analyzers (MFBIA), single-frequency BIA (SFBIA), and bioimpedance spectroscopy.
  • Within-day reliability was assessed via immediate test-retest, while between-day reliability involved repeat assessments 1-2 days later.
  • TEM and ICCs were calculated for body fat percentage, fat mass (FM), and fat-free mass (FFM).

    • Main Results:

    • All methods demonstrated excellent within- and between-day reliability under standardized conditions (ICCs generally > 0.95).
    • Dual-energy X-ray absorptiometry (DXA) exhibited the highest reliability, followed by one MFBIA analyzer and ADP with predicted thoracic gas volume.
    • Body fat percentage TEMs ranged from 0.03-0.70% (within-day) and 0.37-1.24% (between-day).
    • Fat and fat-free mass TEMs ranged from 0.02-0.53 kg (within-day) and 0.26-0.90 kg (between-day).

    Conclusions:

    • Laboratory-based body composition devices offer high reliability for both short-term and longer-term assessments.
    • Methodological choices can impact the precision of body composition tracking, particularly for small changes.
    • DXA, certain MFBIA, and ADP are recommended for reliable body composition monitoring.