title: Effect of an Acute High Carbohydrate Diet on Body Composition Using DXA in Young Men.
abstract: OBJECTIVE
  The aim of this study is to investigate the effect of a 3-day high-carbohydrate diet (≥75% of total calories) on body composition using dual-energy X-ray absorptiometry (DXA).
  
  
  METHODS
  Twenty non-obese young men (age 22.7 ± 2.6 years, BMI 23.5 ± 2.1 kg/m(2)) completed the study. Two DXA tests were performed for the measurement of total body weight, body mass index (BMI), body fat percentage as well as total, appendicular and central lean body mass (LBM) before and after a high-carbohydrate diet for 3 days. In addition, the participants completed a food diary during the 3-day high-carbohydrate diet to determine the mean percentage of carbohydrates consumed from total kilocalories.
  
  
  RESULTS
  The mean percentage of carbohydrate intake over 3 days was 83.7 ± 8.4%. Our results showed a significant increase in total body weight, BMI as well as total and appendicular LBM after the high-carbohydrate diet (p < 0.01). In addition, we observed a strong tendency for lower body fat percentage values after the intervention (p = 0.05). No significant difference was observed for central LBM.
  
  
  CONCLUSIONS
  These results indicate that the effect of an acute high carbohydrate diet seems to affect body composition values using DXA, such as total LBM. This study may lead to the need of standardizing a diet prior to using DXA.
authors.forename: Marc-Antoine
authors.initials: MA
authors.lastname: Rouillier
authors.forename: Sarah
authors.initials: S
authors.lastname: David-Riel
authors.forename: Anne-Sophie
authors.initials: AS
authors.lastname: Brazeau
authors.forename: David H
authors.initials: DH
authors.lastname: St-Pierre
authors.forename: Antony D
authors.initials: AD
authors.lastname: Karelis
mesh_terms: D015502:Absorptiometry, Photon; D050154:Adiposity; D000328:Adult; D035843:Biomedical Research; D001823:Body Composition; D015992:Body Mass Index; D015930:Diet Records; D004040:Dietary Carbohydrates / Q000009:adverse effects* / Q000378:metabolism; D002149:Energy Intake; D004734:Energy Metabolism; D006801:Humans; D008297:Male; D009043:Motor Activity; D024510:Muscle Development; D015596:Nutrition Assessment; D050177:Overweight / Q000209:etiology* / Q000378:metabolism; D011792:Quebec; D012107:Research Design; D013997:Time Factors; D015430:Weight Gain; D055815:Young Adult
chemical_list: D004040:Dietary Carbohydrates