Title

EFFECTS OF HYDRATION AND DEHYDRATION ON BODY-COMPOSITION ANALYSIS - A COMPARATIVE-STUDY OF BIOELECTRIC IMPEDANCE ANALYSIS AND HYDRODENSITOMETRY

Document Type

Article

Publication Date

12-1-1991

Department

Human Performance and Recreation

Abstract

Since 1983, bioelectric impedance has been researched with respect to its validity and reliability in the determination of body composition. It continues to be compared to hydrostatic weighing, the anthropometric "gold standard". This study was designed to investigate the relationship between bioelectric impedance analysis (BIA) and hydrodensitometry (HW) under three conditions: control, hydration and dehydration. Caucasian males (aged 18-44 years) served as subjects (n = 10). Body composition was determined by BIA and HW before intervention, 30 minutes post-hydration, and following a combination of exercise and sitting in a steam room to decrease body weight by two to four percent (XBAR = 2.81%). Statistical treatment by two-way analysis of variance for repeated measures revealed that although there were no significant differences between the two techniques of body composition determination under any of the three conditions, there was a statistically significant decrease in percent body fat determined in the dehydrated state as compared to the control and hydrated conditions. Recommendations include the determination of hydration state prior to engaging in body composition analysis by either method.

Publication Title

JOURNAL OF SPORTS MEDICINE AND PHYSICAL FITNESS

Volume

31

Issue

4

First Page

565

Last Page

570

This document is currently not available here.

Find in your library

Share

 
COinS