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A time-efficient reduction of fat mass in 4 days with exercise and caloric restriction
Univ Las Palmas Gran Canaria, Dept Phys Educ, Las Palmas Gran Canaria 35017, Canary Islands, Spain.
Univ Las Palmas Gran Canaria, Dept Phys Educ, Las Palmas Gran Canaria 35017, Canary Islands, Spain.
Univ Las Palmas Gran Canaria, Dept Phys Educ, Las Palmas Gran Canaria 35017, Canary Islands, Spain.
Univ Las Palmas Gran Canaria, Dept Phys Educ, Las Palmas Gran Canaria 35017, Canary Islands, Spain.
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2015 (English)In: Scandinavian Journal of Medicine and Science in Sports, ISSN 0905-7188, E-ISSN 1600-0838, Vol. 25, no 2, 223-233 p.Article in journal (Refereed) Published
Abstract [en]

To determine whether a fast reduction in fat mass can be achieved in 4 days by combining caloric restriction (CR: 3.2kcal/kg body weight per day) with exercise (8-h walking+45-min arm cranking per day) to induce an energy deficit of approximate to 5000kcal/day, 15 overweight men underwent five experimental phases: pretest, exercise+CR for 4 days (WCR), control diet+reduced exercise for 3 days (DIET), and follow-up 4 weeks (POST1) and 1 year later (POST2). During WCR, the diet consisted solely of whey protein (n=8) or sucrose (n=7) (0.8g/kg body weight per day). After WCR, DIET, POST1, and POST2, fat mass was reduced by a mean of 2.1, 2.8, 3.8, and 1.9kg (P<0.05), with two thirds of this loss from the trunk; and lean mass by 2.8, 1.0, 0.5, and 0.4kg, respectively. After WCR, serum glucose, insulin, homeostatic model assessment, total and low-density lipoprotein cholesterol and triglycerides were reduced, and free fatty acid and cortisol increased. Serum leptin was reduced by 64%, 50%, and 33% following WCR, DIET, and POST1, respectively (P<0.05). The effects were similar in both groups. In conclusion, a clinically relevant reduction in fat mass can be achieved in overweight men in just 4 days by combining prolonged exercise with CR.

Place, publisher, year, edition, pages
2015. Vol. 25, no 2, 223-233 p.
Keyword [en]
Obesity, hypocaloric diet, whey protein, sucrose, walking
National Category
Sport and Fitness Sciences
Identifiers
URN: urn:nbn:se:miun:diva-25652DOI: 10.1111/sms.12194ISI: 000351875200020PubMedID: 24602091Scopus ID: 2-s2.0-84925351099OAI: oai:DiVA.org:miun-25652DiVA: diva2:849414
Available from: 2015-08-28 Created: 2015-08-18 Last updated: 2015-08-28Bibliographically approved

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