Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/8661
Type: Journal article
Title: Body composition changes in elite male body builders during preparation for competition.
Author: Withers, R.
Noell, C.
Whittingham, N.
Chatterton, B.
Schultz, C.
Keeves, J.
Citation: Australian Journal of Science and Medicine in Sport, 1997; 29(1):11-16
Issue Date: 1997
ISSN: 0813-6289
Abstract: Anthropometric profiles together with a 4 compartment criterion model of body composition analysis (total body water, bone mineral, fat and residual masses via a combination of deuterium dilution, dual-energy x-ray absorptiometry and hydrodensitometry) were conducted on 3 elite male bodybuilders 10 wk and then 5 d before competition. A mean body mass reduction from 99.70 (Quetelet's Index = 31.6 kg/m2) to 92.79 kg (Quetelet's Index = 29.2 kg/m2) was accompanied by a decline in the sum of 8 skinfold thicknesses (triceps, subscapular, biceps, iliac crest, supraspinale, abdominal, front thigh and medial calf) from 51.1 to 36.7 mm. The 4 compartment body composition model indicated that there were reductions of: percent body fat (%BF) from 9.1 to 5.0%, fat free mass (FFM) from 90.60 to 88.14 kg and fat mass (FM) from 9.10 to 4.65 kg. Sixty-four percent of the 6.91 kg loss in body mass therefore came from the FM. The 2 compartment hydrodensitometric model yielded higher %BFs (initial = 11.2; final = 7.1) than the 4 compartment model (initial = 9.1; final = 5.0) which is theoretically more valid because it controls for biological variability in the percentages of water and bone mineral in the FFM. Nevertheless, both models registered decreases of 4.1%BF.
Keywords: Humans; Absorptiometry, Photon; Anthropometry; Competitive Behavior; Body Composition; Time Factors; Weight Lifting; Adult; Male
RMID: 0030005077
Description (link): http://www.ncbi.nlm.nih.gov/pubmed/9127683
Appears in Collections:Medicine publications

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