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Journal of Obesity
Volume 2014 (2014), Article ID 197216, 8 pages
Clinical Study

Lifestyle Intervention Involving Calorie Restriction with or without Aerobic Exercise Training Improves Liver Fat in Adults with Visceral Adiposity

1Faculty of Sports and Health Science, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan
2Faculty of Environmental and Symbiotic Sciences, Prefectural University of Kumamoto, 3-1-100 Tsukide, Higashi-ku, Kumamoto 862-8502, Japan
3Faculty of Nutritional Sciences, Nakamura Gakuen University, 5-7-1 Befu, Jonan-ku, Fukuoka 814-0104, Japan
4Faculty of Nursing and Nutrition, Nagasaki University, 1-1-1 Manabino, Nagayo, Nishisonogi-gun, Nagasaki 851-2195, Japan
5Faculty of Computer Science and Systems Engineering, Okayama Prefectural University, 111 Kuboki, Soja-shi, Okayama 719-1197, Japan
6Department of Internal Medicine, Saga University, 5-1-1 Nabeshima, Saga 849-8501, Japan
7Institute for Physical Activity, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan

Received 8 January 2014; Revised 21 March 2014; Accepted 24 March 2014; Published 17 April 2014

Academic Editor: Jordi Salas-Salvadó

Copyright © 2014 Eiichi Yoshimura et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Objective. To evaluate the effect of calorie restriction-induced weight loss with or without aerobic exercise on liver fat. Methods. Thirty-three adults with visceral adiposity were divided into calorie restriction (CR; ) or CR and aerobic exercise (CR + Ex; ) groups. Target energy intake was 25 kcal/kg of ideal body weight. The CR + Ex group had a targeted exercise time of 300 min/wk or more at lactate threshold intensity for 12 weeks. Results. Reductions in body weight (CR,  kg; CR + Ex,  kg), fat mass (CR, kg; CR + Ex,  kg), and visceral fat (CR,  cm2; CR + Ex,  cm2) were not statistically different between groups. Liver fat decreased significantly in both groups, with no difference between groups. Change in maximal oxygen uptake was significantly greater in the CR + Ex group than in the CR group (CR,  mL/kg/min; CR + Ex,  mL/kg/min). Conclusion. Both CR and CR + Ex resulted in an improved reduction in liver fat; however, there was no additive effect of exercise training.