Document Detail


Moderate dose of watercress and red radish does not reduce oxygen consumption during graded exhaustive exercise.
MedLine Citation:
PMID:  25068141     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
OBJECTIVE: Very recent studies have reported positive effects of dietary nitrate on the oxygen consumption during exercise. This research aimed to study the effect of moderate dose of high-nitrate vegetables, watercress (Nasturtium officinale) and red radish (Raphanus sativus) compared with a control group on the incremental treadmill exercise test following a standard Bruce protocol controlled by computer.
MATERIALS AND METHODS: Group 1 consumed 100 g watercress (n=11, 109.5 mg nitrate/day), and group 2 consumed 100 g red radish (n=11, mg 173.2 mg nitrate/day) for seven days, and control group (n=14) was prohibited from high nitrate intake.
RESULTS: During exercise, watercress group showed significant changes in the maximum values of Respiratory Exchange Ratio (RER) (p<0.05), End-Tidal O2 Fraction (FETO2) (p<0.05), and energy consumption from carbohydrate (p<0.01). Red radish group had a significant increase in the VCO2 (p<0.01), RER (p<0.01), VT (p<0.05), VCO2/kg (p<0.05), and energy consumption from carbohydrates (p<0.01). When all groups in the same workload were normalized by the subject's body mass, watercress had a significant increase in the total expired CO2 (p<0.05), RER (p<0.05), FETO2 (p<0.05), and energy consumption from carbohydrates (p<0.05) compared with the control group. Similar comparison between red radish and control group revealed a significant increase during pre-test in the total CO2 production (p<0.05), VCO2 (p<0.05), RER (p<0.01), VT (p<0.05), and VCO2/kg (p<0.05). Conclusion : Current results indicate higher carbon dioxide production in the experimental groups in the same workload. This might have a negative impact on the exercise performance. Further investigations with controlled exercise program will be necessary.
Authors:
Abbas Meamarbashi; Meysam Alipour
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Avicenna journal of phytomedicine     Volume:  4     ISSN:  2228-7930     ISO Abbreviation:  Avicenna J Phytomed     Publication Date:  2014 Jul 
Date Detail:
Created Date:  2014-07-28     Completed Date:  2014-07-28     Revised Date:  2014-07-31    
Medline Journal Info:
Nlm Unique ID:  101586220     Medline TA:  Avicenna J Phytomed     Country:  Iran    
Other Details:
Languages:  eng     Pagination:  267-72     Citation Subset:  -    
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