Validity of bioelectrical impedance equations for estimating fat-free mass in young athletes

Tammy K. Evetovich; Terry J. Housh; Joan M. Eckerson; Glen O. Johnson; Dona J. Housh; Jeffrey R. Stout; Douglas B. Smith; Kyle T. Ebersole

doi:10.1519/00124278-199708000-00004

Validity of bioelectrical impedance equations for estimating fat-free mass in young athletes

Tammy K. Evetovich, Terry J. Housh, Joan M. Eckerson, Glen O. Johnson, Dona J. Housh, Jeffrey R. Stout, Douglas B. Smith, Kyle T. Ebersole

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

This study examined the validity of bioelectrical impedance (BIA) equations for estimating fat-free mass (FFM) in 117 Caucasian athletes (M age ± SD = 11 ± 2 yrs) who volunteered to undergo underwater weighing (UWW) and BIA assessment. Eleven BIA equations and a machine-generated value (BIAM) were cross-validated. Cross-validation analyses included examination of constant error (CE), standard error of estimate (SEE), r, and total error (TE). The results indicated that the equation of Guo most accurately estimated FFM due to a nonsignificant CE (p > 0.004) (0.12 kg), the lowest SEE (1.99 kg), and the lowest TE (2.09 kg). Two equations developed by Houtkooper and BIAM resulted in TE values of ≤2.69 kg and should be considered acceptable alternatives to the equation of Guo.

Original language	English (US)
Pages (from-to)	155-158
Number of pages	4
Journal	Journal of strength and conditioning research
Volume	11
Issue number	3
DOIs	https://doi.org/10.1519/00124278-199708000-00004
State	Published - Aug 1997
Externally published	Yes

All Science Journal Classification (ASJC) codes

Orthopedics and Sports Medicine
Physical Therapy, Sports Therapy and Rehabilitation

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Validity of bioelectrical impedance equations for estimating fat-free mass in young athletes. / Evetovich, Tammy K.; Housh, Terry J.; Eckerson, Joan M.; Johnson, Glen O.; Housh, Dona J.; Stout, Jeffrey R.; Smith, Douglas B.; Ebersole, Kyle T.

In: Journal of strength and conditioning research, Vol. 11, No. 3, 08.1997, p. 155-158.

Research output: Contribution to journal › Article › peer-review

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title = "Validity of bioelectrical impedance equations for estimating fat-free mass in young athletes",

abstract = "This study examined the validity of bioelectrical impedance (BIA) equations for estimating fat-free mass (FFM) in 117 Caucasian athletes (M age ± SD = 11 ± 2 yrs) who volunteered to undergo underwater weighing (UWW) and BIA assessment. Eleven BIA equations and a machine-generated value (BIAM) were cross-validated. Cross-validation analyses included examination of constant error (CE), standard error of estimate (SEE), r, and total error (TE). The results indicated that the equation of Guo most accurately estimated FFM due to a nonsignificant CE (p > 0.004) (0.12 kg), the lowest SEE (1.99 kg), and the lowest TE (2.09 kg). Two equations developed by Houtkooper and BIAM resulted in TE values of ≤2.69 kg and should be considered acceptable alternatives to the equation of Guo.",

author = "Evetovich, {Tammy K.} and Housh, {Terry J.} and Eckerson, {Joan M.} and Johnson, {Glen O.} and Housh, {Dona J.} and Stout, {Jeffrey R.} and Smith, {Douglas B.} and Ebersole, {Kyle T.}",

year = "1997",

month = aug,

doi = "10.1519/00124278-199708000-00004",

language = "English (US)",

volume = "11",

pages = "155--158",

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number = "3",

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T1 - Validity of bioelectrical impedance equations for estimating fat-free mass in young athletes

AU - Evetovich, Tammy K.

AU - Housh, Terry J.

AU - Eckerson, Joan M.

AU - Johnson, Glen O.

AU - Housh, Dona J.

AU - Stout, Jeffrey R.

AU - Smith, Douglas B.

AU - Ebersole, Kyle T.

PY - 1997/8

Y1 - 1997/8

N2 - This study examined the validity of bioelectrical impedance (BIA) equations for estimating fat-free mass (FFM) in 117 Caucasian athletes (M age ± SD = 11 ± 2 yrs) who volunteered to undergo underwater weighing (UWW) and BIA assessment. Eleven BIA equations and a machine-generated value (BIAM) were cross-validated. Cross-validation analyses included examination of constant error (CE), standard error of estimate (SEE), r, and total error (TE). The results indicated that the equation of Guo most accurately estimated FFM due to a nonsignificant CE (p > 0.004) (0.12 kg), the lowest SEE (1.99 kg), and the lowest TE (2.09 kg). Two equations developed by Houtkooper and BIAM resulted in TE values of ≤2.69 kg and should be considered acceptable alternatives to the equation of Guo.

AB - This study examined the validity of bioelectrical impedance (BIA) equations for estimating fat-free mass (FFM) in 117 Caucasian athletes (M age ± SD = 11 ± 2 yrs) who volunteered to undergo underwater weighing (UWW) and BIA assessment. Eleven BIA equations and a machine-generated value (BIAM) were cross-validated. Cross-validation analyses included examination of constant error (CE), standard error of estimate (SEE), r, and total error (TE). The results indicated that the equation of Guo most accurately estimated FFM due to a nonsignificant CE (p > 0.004) (0.12 kg), the lowest SEE (1.99 kg), and the lowest TE (2.09 kg). Two equations developed by Houtkooper and BIAM resulted in TE values of ≤2.69 kg and should be considered acceptable alternatives to the equation of Guo.

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Validity of bioelectrical impedance equations for estimating fat-free mass in young athletes

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