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Development of an equation for estimating appendicular skeletal muscle mass in Japanese older adults using bioelectrical impedance analysis.
Geriatr Gerontol Int 2014; 14(4):851-7GG

Abstract

AIM

Bioelectrical impedance analysis has been reported to have high reliability and accuracy in assessing body composition. However, equations for estimating appendicular skeletal muscle mass are population-specific, and few have been developed for older Japanese adults. Thus, the purpose of the present study was to develop and validate an estimate equation for appendicular skeletal muscle mass using bioelectrical impedance analysis.

METHODS

A total of 250 older adults aged 65 years and older participated in this study. Appendicular skeletal muscle mass was measured using dual-energy X-ray absorptiometry, and bioelectrical resistance was measured using a multifrequency bioelectrical impedance analyzer. Multiple regression analysis was applied to derive sex-specific estimation formulae using bioelectrical impedance analysis, and a Bland-Altman analysis was used to test agreement.

RESULTS

The cross-validation results showed that the slopes and intercepts of the regression lines were approximately one and zero, respectively, and the coefficients of determination and standard errors of the estimate of the newly developed equations were similar between the two groups. Thus, the single sex-specific equations were developed using all participants as follows. Men: appendicular skeletal muscle mass=0.197 × (impedance index) +0.179 × (weight) -0.019 (R(2) =0.87, standard error of the estimate=0.98 kg). Women: appendicular skeletal muscle mass=0.221 × (impedance index) +0.117 × (weight) +0.881 (R(2) =0.89, standard error of the estimate=0.81 kg).

CONCLUSION

These new equations offer a valid option for assessing appendicular skeletal muscle mass in older Japanese adults.

Authors+Show Affiliations

Section for Health Promotion, Department for Research and Development to Support Independent Life of Elderly, Center for Gerontology and Social Science, National Center for Geriatrics and Gerontology, Obu, Japan; Japan Foundation for Aging and Health, Obu, Japan.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24450604

Citation

Yoshida, Daisuke, et al. "Development of an Equation for Estimating Appendicular Skeletal Muscle Mass in Japanese Older Adults Using Bioelectrical Impedance Analysis." Geriatrics & Gerontology International, vol. 14, no. 4, 2014, pp. 851-7.
Yoshida D, Shimada H, Park H, et al. Development of an equation for estimating appendicular skeletal muscle mass in Japanese older adults using bioelectrical impedance analysis. Geriatr Gerontol Int. 2014;14(4):851-7.
Yoshida, D., Shimada, H., Park, H., Anan, Y., Ito, T., Harada, A., & Suzuki, T. (2014). Development of an equation for estimating appendicular skeletal muscle mass in Japanese older adults using bioelectrical impedance analysis. Geriatrics & Gerontology International, 14(4), pp. 851-7. doi:10.1111/ggi.12177.
Yoshida D, et al. Development of an Equation for Estimating Appendicular Skeletal Muscle Mass in Japanese Older Adults Using Bioelectrical Impedance Analysis. Geriatr Gerontol Int. 2014;14(4):851-7. PubMed PMID: 24450604.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Development of an equation for estimating appendicular skeletal muscle mass in Japanese older adults using bioelectrical impedance analysis. AU - Yoshida,Daisuke, AU - Shimada,Hiroyuki, AU - Park,Hyuntae, AU - Anan,Yuya, AU - Ito,Tadashi, AU - Harada,Atsushi, AU - Suzuki,Takao, Y1 - 2014/01/23/ PY - 2013/09/12/accepted PY - 2014/1/24/entrez PY - 2014/1/24/pubmed PY - 2015/6/24/medline KW - aging KW - bioelectrical impedance KW - body composition KW - sarcopenia KW - skeletal muscle mass SP - 851 EP - 7 JF - Geriatrics & gerontology international JO - Geriatr Gerontol Int VL - 14 IS - 4 N2 - AIM: Bioelectrical impedance analysis has been reported to have high reliability and accuracy in assessing body composition. However, equations for estimating appendicular skeletal muscle mass are population-specific, and few have been developed for older Japanese adults. Thus, the purpose of the present study was to develop and validate an estimate equation for appendicular skeletal muscle mass using bioelectrical impedance analysis. METHODS: A total of 250 older adults aged 65 years and older participated in this study. Appendicular skeletal muscle mass was measured using dual-energy X-ray absorptiometry, and bioelectrical resistance was measured using a multifrequency bioelectrical impedance analyzer. Multiple regression analysis was applied to derive sex-specific estimation formulae using bioelectrical impedance analysis, and a Bland-Altman analysis was used to test agreement. RESULTS: The cross-validation results showed that the slopes and intercepts of the regression lines were approximately one and zero, respectively, and the coefficients of determination and standard errors of the estimate of the newly developed equations were similar between the two groups. Thus, the single sex-specific equations were developed using all participants as follows. Men: appendicular skeletal muscle mass=0.197 × (impedance index) +0.179 × (weight) -0.019 (R(2) =0.87, standard error of the estimate=0.98 kg). Women: appendicular skeletal muscle mass=0.221 × (impedance index) +0.117 × (weight) +0.881 (R(2) =0.89, standard error of the estimate=0.81 kg). CONCLUSION: These new equations offer a valid option for assessing appendicular skeletal muscle mass in older Japanese adults. SN - 1447-0594 UR - https://www.unboundmedicine.com/medline/citation/24450604/Development_of_an_equation_for_estimating_appendicular_skeletal_muscle_mass_in_Japanese_older_adults_using_bioelectrical_impedance_analysis_ L2 - https://doi.org/10.1111/ggi.12177 DB - PRIME DP - Unbound Medicine ER -