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Total body water and fat-free mass in ballet dancers: comparing isotope dilution and TOBEC.
Med Sci Sports Exerc. 1991 May; 23(5):534-41.MS

Abstract

Nine male and seven female high level ballet students had total body water (TBW) measured by two methods: 1) H2(18)O isotope dilution and 2) total body electrical conductivity (TOBEC). TBW from TOBEC measurements was calculated using an equation previously derived from adults, and these new measurements correlated highly with TBW by isotope dilution (r = 0.99, SEE = 0.78 kg). However, the difference between these two methods increased as TBW increased. Therefore, a new equation (ballet equation) was developed which improved the prediction of TBW for individuals (SEE = 0.69 kg) and for which the difference in TBW between isotope dilution and TOBEC was independent of the TBW value. Using age-adjusted hydration constants, the TBW measurements by isotope dilution were converted to fat-free mass, and these values were used to develop an accurate equation for predicting fat-free mass from TOBEC measurements (r = 0.99, SEE = 0.91 kg). In addition, we measured TBW and calculated FFM in ten control adolescents and used these values to develop equations for predicting TBW (r = 0.99, SEE = 1.01 kg) and FFM (r = 0.99, SEE = 1.42 kg) in a combined group of adolescent dancers and non-dancers. Total body water and fat-free mass can be accurately measured in adolescent ballet dancers and non-dancers using TOBEC.

Authors+Show Affiliations

Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, U.S. Gov't, Non-P.H.S.
Research Support, U.S. Gov't, P.H.S.

Language

eng

PubMed ID

2072831

Citation

Hergenroeder, A C., et al. "Total Body Water and Fat-free Mass in Ballet Dancers: Comparing Isotope Dilution and TOBEC." Medicine and Science in Sports and Exercise, vol. 23, no. 5, 1991, pp. 534-41.
Hergenroeder AC, Wong WW, Fiorotto ML, et al. Total body water and fat-free mass in ballet dancers: comparing isotope dilution and TOBEC. Med Sci Sports Exerc. 1991;23(5):534-41.
Hergenroeder, A. C., Wong, W. W., Fiorotto, M. L., Smith, E. O., & Klish, W. J. (1991). Total body water and fat-free mass in ballet dancers: comparing isotope dilution and TOBEC. Medicine and Science in Sports and Exercise, 23(5), 534-41.
Hergenroeder AC, et al. Total Body Water and Fat-free Mass in Ballet Dancers: Comparing Isotope Dilution and TOBEC. Med Sci Sports Exerc. 1991;23(5):534-41. PubMed PMID: 2072831.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Total body water and fat-free mass in ballet dancers: comparing isotope dilution and TOBEC. AU - Hergenroeder,A C, AU - Wong,W W, AU - Fiorotto,M L, AU - Smith,E O, AU - Klish,W J, PY - 1991/5/1/pubmed PY - 1991/5/1/medline PY - 1991/5/1/entrez SP - 534 EP - 41 JF - Medicine and science in sports and exercise JO - Med Sci Sports Exerc VL - 23 IS - 5 N2 - Nine male and seven female high level ballet students had total body water (TBW) measured by two methods: 1) H2(18)O isotope dilution and 2) total body electrical conductivity (TOBEC). TBW from TOBEC measurements was calculated using an equation previously derived from adults, and these new measurements correlated highly with TBW by isotope dilution (r = 0.99, SEE = 0.78 kg). However, the difference between these two methods increased as TBW increased. Therefore, a new equation (ballet equation) was developed which improved the prediction of TBW for individuals (SEE = 0.69 kg) and for which the difference in TBW between isotope dilution and TOBEC was independent of the TBW value. Using age-adjusted hydration constants, the TBW measurements by isotope dilution were converted to fat-free mass, and these values were used to develop an accurate equation for predicting fat-free mass from TOBEC measurements (r = 0.99, SEE = 0.91 kg). In addition, we measured TBW and calculated FFM in ten control adolescents and used these values to develop equations for predicting TBW (r = 0.99, SEE = 1.01 kg) and FFM (r = 0.99, SEE = 1.42 kg) in a combined group of adolescent dancers and non-dancers. Total body water and fat-free mass can be accurately measured in adolescent ballet dancers and non-dancers using TOBEC. SN - 0195-9131 UR - https://www.unboundmedicine.com/medline/citation/2072831/Total_body_water_and_fat_free_mass_in_ballet_dancers:_comparing_isotope_dilution_and_TOBEC_ L2 - https://journals.lww.com/2072831.pmid DB - PRIME DP - Unbound Medicine ER -