title: Interrelationships between changes in anthropometric variables and computed tomography indices of abdominal fat distribution in response to a 1-year physical activity-healthy eating lifestyle modification program in abdominally obese men.
abstract: The objectives were to (i) measure the effects of a 1-year lifestyle modification program on body fat distribution/anthropometric variables; (ii) determine the interrelationships between changes in all these variables; and (iii) investigate whether there is a selective reduction in deep (DSAT) vs. superficial subcutaneous adipose tissue (SSAT) at the abdominal level following a 1-year lifestyle modification program. Anthropometric variables, body composition and abdominal and midthigh fat distribution were assessed at baseline and after 1 year in 109 sedentary, dyslipidemic and abdominally obese men. Reductions in anthropometric variables, skinfold thicknesses (except the trunk/extremity ratio) and fat mass as well as an increase in fat-free mass were observed after 1 year (p < 0.0001). Decreases in abdominal adipose tissue volumes were also noted (-23%, -26%, -18%, -19%, -17%, p < 0.0001 for total adipose tissue, visceral adipose tissue, subcutaneous adipose tissue, DSAT and SSAT, respectively). Adipose tissue areas at midthigh also decreased (-18%, -18%, -17%, p < 0.0001 for total, deep, and subcutaneous adipose tissue, respectively). A reduction (-9%, p < 0.0001) in low-attenuation muscle area and an increase (+1%, p < 0.05) in normal-attenuation muscle area were also observed. There was a positive relationship between changes in visceral adipose tissue and changes in DSAT (r = 0.65, p < 0.0001) or SSAT (r = 0.63, p < 0.0001). Although absolute changes in DSAT were greater than changes in SSAT, relative changes in both depots were similar, independent of changes in visceral adipose tissue. The 1-year lifestyle modification program therefore improved the body fat distribution pattern and midthigh muscle quality in abdominally obese men.
authors.affiliation: a Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Pavilion Marguerite-D'Youville, 2725 chemin Ste-Foy, Québec QC G1V 4G5, Canada.
authors.forename: Nicole
authors.initials: N
authors.lastname: Villeneuve
authors.forename: Emilie
authors.initials: E
authors.lastname: Pelletier-Beaumont
authors.forename: Julie-Anne
authors.initials: JA
authors.lastname: Nazare
authors.forename: Isabelle
authors.initials: I
authors.lastname: Lemieux
authors.forename: Natalie
authors.initials: N
authors.lastname: Alméras
authors.forename: Jean
authors.initials: J
authors.lastname: Bergeron
authors.forename: Angelo
authors.initials: A
authors.lastname: Tremblay
authors.forename: Paul
authors.initials: P
authors.lastname: Poirier
authors.forename: Jean-Pierre
authors.initials: JP
authors.lastname: Després
mesh_terms: D050153:Abdominal Fat / Q000000981:diagnostic imaging*; D000328:Adult; D000368:Aged; D001837:Body Weights and Measures; D005247:Feeding Behavior; D015438:Health Behavior; D006801:Humans; D008019:Life Style; D008297:Male; D008875:Middle Aged; D009043:Motor Activity; D056128:Obesity, Abdominal / Q000000981:diagnostic imaging* / Q000628:therapy*; D013997:Time Factors; D014057:Tomography, X-Ray Computed