title: Efficiency of a free-living physical activity promotion program following diet modification for fat loss in Japanese obese men.
abstract: The aim of the current study was to examine the efficiency of a free-living physical activity promotion (PAP) program following a diet modification program for fat loss. Fifty obese men, aged 51.4±7.0 y, received a 6-mo regimen consisting of 2 phases. Weekly 90-min free-living PAP sessions were provided for 3 mo immediately after a 3-mo diet modification phase. Fat mass (FM) was measured at baseline and at months 3 and 6 using dual energy X-ray absorptiometry. The time spent in moderate-vigorous physical activity (MVPA) was monitored by a validated single-axis accelerometer. The total energy intake of all participants was assessed at baseline and during weeks 9 and 10 of both the diet modification and PAP programs. The change (Δ) in FM was -1.4±1.9 kg (p<0.05) during the PAP program after the diet modification program (-4.3±2.9 kg, p<0.01). Although there was no significant relationship between ΔFM and ΔMVPA during the PAP phase (p=0.11), MVPA was significantly increased during the PAP phase (+76.0±146.5 min/wk, p<0.01). However, a significant correlation was observed between energy intake/weight and MVPA during the PAP program (r=0.39). Our results suggest that the magnitude of expected FM loss induced by an increase in PA may be suppressed as a result of increased energy intake, even during a PAP program after a diet modification program.
authors: Doctoral Program in Sports Medicine, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Ibaraki, Japan. eto@stat.taiiku.tsukuba.ac.jp
authors: Miki
authors: M
authors: Eto
authors: Kazunori
authors: K
authors: Ohkawara
authors: Hiroyuki
authors: H
authors: Sasai
authors: Takehiko
authors: T
authors: Tsujimoto
authors: Rina
authors: R
authors: So
authors: Tomoaki
authors: T
authors: Matsuo
authors: Hiroyuki
authors: H
authors: Ohkubo
authors: Kiyoji
authors: K
authors: Tanaka
mesh_terms: D015502:Absorptiometry, Photon; D000328:Adult; D044466:Asian People; D001823:Body Composition; D015992:Body Mass Index; D031204:Caloric Restriction; D002149:Energy Intake; D005247:Feeding Behavior; D006801:Humans; D008297:Male; D008875:Middle Aged; D009043:Motor Activity; D009765:Obesity / Q000628:therapy*; D015431:Weight Loss