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A randomized trial of protein supplementation compared with extra fast food on the effects of resistance training to increase metabolism
Linköpings universitet, Institutionen för medicin och hälsa. Linköpings universitet, Hälsouniversitetet.
Linköpings universitet, Institutionen för medicin och hälsa. Linköpings universitet, Hälsouniversitetet.
Department of Forensic Genetics and Forensic Toxicology, National Board of Forensic Medicine, Sweden.
Linköpings universitet, Institutionen för medicin och hälsa, Omvårdnad. Linköpings universitet, Hälsouniversitetet.
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2012 (Engelska)Ingår i: Scandinavian Journal of Clinical and Laboratory Investigation, ISSN 0036-5513, E-ISSN 1502-7686, Vol. 72, nr 6, s. 471-478Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Objective. To prospectively evaluate the effects of resistance training combined with increased energy intake or protein-supplementation on lean body-mass, resting metabolic-rate (RMR) and cardiovascular risk factors. Methods. Twenty-four healthy males (aged 19-32 years) performed resistance exercise for 12 weeks aiming for at least 1 hour training-sessions 3 times a week. The participants were randomized to consume extra protein (33 g whey protein/day) or a meal of fast-food/day (1350 kcal, 41 g protein). Body-composition was measured with Dual-Energy X-ray Absorptiometry (DEXA) and RMR by indirect calorimetry. Fasting blood samples were drawn before and after the 3-month training period and after 12 months. Results. The body weight increased from 75.1 +/- 6.9 kg to 78.7 +/- 7.2 kg (p andlt; 0.0001), without differences between the groups. RMR increased from 1787 +/- 143 kcal/24 h to 1954 +/- 187 kcal/24 h (p andlt; 0.0001, N = 24), which was more than expected from the increase in lean body-mass (increase from 59.7 +/- 4.3 kg to 61.8 +/- 4.1 kg p = 0.004). Fasting serum-insulin levels increased in the fast-food group compared with the extra-protein group (p = 0.03). ApoB increased from 0.691 +/- 0.14 g/L to 0.768 +/- 0.17 g/L, p = 0.004, in the fast-food group only. Long-term follow up after 12 months showed that RMR, body weight, total fat and lean body-masses did not differ from baseline (n = 19). Conclusions. Resistance training for 12 weeks increased RMR and lean body-mass similarly when based on either an increased energy-intake or protein supplement. However, the increase in RMR was higher than expected from the increase in lean body-mass. Thus resistance training could potentially decrease the risk of obesity by induction of increased RMR.

Ort, förlag, år, upplaga, sidor
Informa Healthcare , 2012. Vol. 72, nr 6, s. 471-478
Nyckelord [en]
Cholesterol, insulin, resistance training, protein, fast-food
Nationell ämneskategori
Medicin och hälsovetenskap
Identifikatorer
URN: urn:nbn:se:liu:diva-84890DOI: 10.3109/00365513.2012.698021ISI: 000308941400006OAI: oai:DiVA.org:liu-84890DiVA, id: diva2:563998
Anmärkning

Funding Agencies|University Hospital of Linkoping Research Funds||Linkoping University||Gamla Tjanarinnor||Medical Research Council of Southeast Sweden||Diabetes Research Centre of Linkoping University||

Tillgänglig från: 2012-11-01 Skapad: 2012-10-26 Senast uppdaterad: 2018-11-15Bibliografiskt granskad

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Vergara, MartaBachrach-Lindström, MargaretaLindström, TorbjörnNyström, Fredrik H

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Institutionen för medicin och hälsaHälsouniversitetetOmvårdnadInternmedicinEndokrin- och magtarmmedicinska kliniken US
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