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Gazzetta Medica Italiana - Archivio per le Scienze Mediche 2022 April;181(4):243-9

DOI: 10.23736/S0393-3660.20.04492-7

Copyright © 2020 EDIZIONI MINERVA MEDICA

lingua: Inglese

Validity of the skinfold equation using doubled skinfold thickness at triceps

Yuta KAJII 1, Hina KINOSHITA 2, Mayu KOBAYASHI 3, Ayako SATONAKA 4, 5, 6, Nobuharu SUZUKI 6

1 Heimat Okazaki Long-Term Care Facility, Okazakikai Medical Corporation, Hamamatsu, Japan; 2 Department of Physical Therapy, General Aoyama Hospital, Toyokawa, Japan; 3 Department of Physical Therapy, Ichinomiya Onsen Hospital, Huehuki, Japan; 4 Department of Physical Therapy, Biwako Professional University of Rehabilitation, Higashiomi, Japan; 5 Graduate School of Medicine, Nagoya University, Nagoya, Japan; 6 Department of Physical Therapy, Tokoha University, Hamamatsu, Japan



BACKGROUND: The skinfold equation opens to the public on CASIO Co.’s website; it may be useful for home-visit rehabilitation settings as long as it is reliable. The purpose of this study was to examine the measurement agreements in percent body fat between the skinfold equation and bioelectrical impedance analysis. The study was conducted at the Department of Physical Therapy, Tokoha University, Hamamatsu, Japan. Study participants were 23 women (20.4±0.29 years) and 23 men (20.3±0.29 years). Cross-sectional and correlative study between two methods were analyzed to evaluate percent body fat.
METHODS: The relationship of percent body fat was examined between the skinfold equation and bioelectrical impedance analysis.
RESULTS: There was a significant correlation (r=0.53, P<0.001) but a poor agreement of percent body fat between the skinfold equation and bioelectrical impedance when the skinfold thicknesses at triceps and subscapular were summed and put into the skinfold equation in the skinfold equation’s original way. But both a good correlation and a good agreement of percent body fat were achieved between the two methods only when the skinfold thickness at triceps was doubled and put it into the equation (r=0.67, P<0.001; bias: 0.68%, 95% limit of agreements: -9.72-11.08).
CONCLUSIONS: The skinfold equation was reliable when it used only doubled skinfold thickness at triceps.


KEY WORDS: Body composition; Skinfold thickness; Electric impedance

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