Analysis of body-composition techniques and models for detecting change in soft tissue with strength training.

Published

Journal Article

The purpose of this study was to compare the ability of various body-composition assessment techniques to detect changes in soft tissue in older, weight-stable women (50-70 y of age) completing a 1-y randomized, controlled trial of progressive resistance training. The intervention group (n = 20) performed high-intensity strength-training 2 d/wk with five different exercises; the control group (n = 19) was untreated. Hydrostatic weighing, 24-h urinary creatinine, computed tomography of thigh sections, total body potassium, and tritium dilution techniques were used to measure increases in total fat-free mass (FFM) and the muscle and water components of FFM. A decrease in fat mass (by hydrostatic weighing) was seen in the strength-trained women compared with the control subjects (P - 0.01-0.0001). Anthropometry, bioelectric impedance, dual-energy X-ray absorptiometry, and total body nitrogen and carbon did not measure any significant change in soft tissue. The choice of a body-composition technique is important when designing a study expected to affect soft tissue, because not all techniques available are precise enough to detect small changes.

Full Text

Duke Authors

Cited Authors

  • Nelson, ME; Fiatarone, MA; Layne, JE; Trice, I; Economos, CD; Fielding, RA; Ma, R; Pierson, RN; Evans, WJ

Published Date

  • May 1996

Published In

Volume / Issue

  • 63 / 5

Start / End Page

  • 678 - 686

PubMed ID

  • 8615349

Pubmed Central ID

  • 8615349

International Standard Serial Number (ISSN)

  • 0002-9165

Digital Object Identifier (DOI)

  • 10.1093/ajcn/63.5.678

Language

  • eng

Conference Location

  • United States