Plantar Callosities & the Validity of Body Composition Assessment by

Status Completed

Clinical Trial Summary

Studies have confirmed the association between plantar callosities and severely obese individuals. Bioelectrical impedance analysis (BIA) is an increasingly popular tool for estimating body composition because it is easy to use, noninvasive, relatively inexpensive, and can be performed across a wide range of subjects.

Our hypotheses for this study are: (1)plantar callosities influence the body composition measurements obtained by bioelectrical impedance analysis BIA, and (2) BIA underestimates the percentage of body fat compared with air-displacement plethysmography (BodPod).

Clinical Trial Description

As the prevalence of obesity continues to increase, many parts of the world are progressively facing a rise in the number of people who fall under WHO obesity class 2 and 3. Since severe obesity is characterized by large alterations in body compartments when compared to overweight or non-obese individuals, there is a need for the evaluation of the body composition of severely obese persons. There is very few published research available on what methods of body composition measurements can be used on this population.

Other studies have also shown the tendency of bioelectrical impedance analysis (BIA) instruments to underestimate percentage of fat mass and overestimate the percentage of fat free nass, compared with gold-standard techniques. We think that plantar callosities might have contributed to the lack of accurate measurements. Thus, the primary aim of this study is to determine whether plantar callosities influence the validity of body composition measurements obtained by BIA, using the InBody 720. The secondary aim is to assess the validity of the body composition measurements obtained by BIA (InBody 720) in severely obese individuals, using air-displacement plethysmography (BodPod) as the gold standard. Additionally, we will explore various sources of error using test-retest reliabilities by measuring body composition with different arm postures. We will examine this further to rule out the possibility of "positions of measurement" as a potential confounder of this study. ;

Study Design

Endpoint Classification: Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Diagnostic

Related Conditions & MeSH terms

Obesity, Morbid

Clinical Trial Details

NCT number	NCT01676883
Study type	Interventional
Source	Norwegian University of Science and Technology
Contact
Status	Completed
Phase	N/A
Start date	October 2012
Completion date	April 2013

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

Plantar Callosities and the Validity of Body Composition Assessment by Bio-impedance in Severely Obese Persons

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms