Document Detail


Low-carbohydrate high-fat diets in combination with daily exercise in rats: Effects on body weight regulation, body composition and exercise capacity.
MedLine Citation:
PMID:  22342194     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
BACKGROUND: The aim of the current investigation was to examine the effects of consuming a low-carbohydrate high-fat diet (LC-HFD) in combination with daily exercise on body weight, body composition, endocrine control of the energy balance system and exercise capacity in adolescent and mature rats. METHOD: Adolescent (n=23) and mature rats (n=16) were maintained on either a standard chow diet (CH) or a LC-HFD for a period of ten days prior to daily exercise training for 21days in forced running wheel system. At the end of the 21day training sessions all rats took part in an exercise performance test where time to exhaustion was measured. RESULTS: Rats maintained on the LC-HFD demonstrated a significant lack of body weight gain (p<0.05) compared to CH maintained rats, despite equicaloric intake and performing identical amounts of daily exercise. Body composition was significantly altered in the LC-HFD rats (p<0.05) with increased body fat (p<0.01). Leptin concentrations were higher (p<0.05) and IGF-I concentrations were lower (p<0.01) in the LC-HFD fed rats. Exercise performance was not diminished in the LC-HFD group despite the higher fat mass. Both groups irrespective of age performed equally as well in the time to exhaustion test (p>0.05). CONCLUSION: Maintenance on the LC-HFD in combination with forced daily exercise did not impact exercise capacity (total distance and meters per minute). Additionally consumption of an extreme LC-HFD in combination with daily exercise resulted in significantly less body weight gain but increased fat mass. When combined with daily exercise this diet clearly had a negative impact on body composition, but did not affect exercise capacity.
Authors:
Samantha J Caton; Maximilian Bielohuby; Yinglong Bai; Lothar J Spangler; Lukas Burget; Paul Pfluger; Claudia Reinel; Michael Czisch; Martin Reincke; Silvana Obici; Ellen Kienzle; Matthias H Tschöp; Martin Bidlingmaier
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-2-9
Journal Detail:
Title:  Physiology & behavior     Volume:  106     ISSN:  1873-507X     ISO Abbreviation:  -     Publication Date:  2012 Feb 
Date Detail:
Created Date:  2012-3-2     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0151504     Medline TA:  Physiol Behav     Country:  -    
Other Details:
Languages:  ENG     Pagination:  185-192     Citation Subset:  -    
Copyright Information:
Copyright © 2012. Published by Elsevier Inc.
Affiliation:
Endocrine Research Unit, Medizinische Klinik und Poliklinik IV, Klinikum der LMU, Munich, Germany.
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