Validation of a skinfold based index for tracking proportional changes in lean mass

British Journal of Sports Medicine
G J SlaterW G Hopkins

Abstract

The lean mass index (LMI) is a new empirical measure that tracks within-subject proportional changes in body mass adjusted for changes in skinfold thickness. To compare the ability of the LMI and other skinfold derived measures of lean mass to monitor changes in lean mass. 20 elite rugby union players undertook full anthropometric profiles on two occasions 10 weeks apart to calculate the LMI and five skinfold based measures of lean mass. Hydrodensitometry, deuterium dilution, and dual energy x ray absorptiometry provided a criterion choice, four compartment (4C) measure of lean mass for validation purposes. Regression based measures of validity, derived for within-subject proportional changes through log transformation, included correlation coefficients and standard errors of the estimate. The correlation between change scores for the LMI and 4C lean mass was moderate (0.37, 90% confidence interval -0.01 to 0.66) and similar to the correlations for the other practical measures of lean mass (range 0.26 to 0.42). Standard errors of the estimate for the practical measures were in the range of 2.8-2.9%. The LMI correctly identified the direction of change in 4C lean mass for 14 of the 20 athletes, compared with 11 to 13 for the oth...Continue Reading

References

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Citations

Sep 14, 2007·Journal of Sports Sciences·Megan AndersonDavid Pyne
Mar 1, 2006·British Journal of Sports Medicine·G M DuthieS L Hooper
Jun 2, 2012·Journal of Strength and Conditioning Research·Daniel J Smart, Nicholas D Gill
Nov 5, 2013·Journal of Clinical Densitometry : the Official Journal of the International Society for Clinical Densitometry·Steven PetakJohn A Shepherd
Apr 9, 2015·Journal of Strength and Conditioning Research·Jace A DelaneyBen J Dascombe
Sep 15, 2015·European Journal of Sport Science·Eric C HaakonssenDavid T Martin
Jan 22, 2014·European Journal of Sport Science·Daniel SmartNicholas Gill
Apr 23, 2013·Journal of Strength and Conditioning Research·Daniel J SmartNicholas D Gill
Oct 17, 2017·International Journal of Sport Nutrition and Exercise Metabolism·Adam J ZemskiGary J Slater
Nov 3, 2016·Journal of Strength and Conditioning Research·Tannath J ScottBen J Dascombe
Aug 31, 2018·Journal of Strength and Conditioning Research·Duncan G BradburyPaul S R Goods
Jun 20, 2020·Journal of Sports Sciences·Lachlan J G MitchellMegan E Shephard
Jan 16, 2013·International Journal of Sports Physiology and Performance·Jeremy M SheppardRobert U Newton
May 15, 2018·International Journal of Sport Nutrition and Exercise Metabolism·Adam J ZemskiGary J Slater
May 15, 2018·International Journal of Sport Nutrition and Exercise Metabolism·Jennifer SygoJamie F Burr
Mar 3, 2020·Frontiers in Physiology·F Javier NúñezLuis Suárez-Arrones
Aug 8, 2012·International Journal of Sports Physiology and Performance·Dean G HighamAnthony Eddy

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