Document Detail

The effects of mouthpiece use on gas exchange parameters during steady-state exercise in college-aged men and women.
MedLine Citation:
PMID:  21881071     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: The authors conducted a study to assess the effects of custom-fitted mouthpieces on gas exchange parameters, including volume of oxygen consumption over time [corrected] (VO(2)), volume of oxygen consumption over time per kilogram of body weight [corrected] (VO(2) /kg) and volume of carbon dioxide production over time [corrected] (VO(2)).
METHODS: Sixteen physically fit college students aged 18 through 21 years performed two 10-minute treadmill runs (6.5 miles per hour, 0 percent grade) for each of three treatment conditions (mouthpiece, no mouthpiece and nose breathing). The authors assigned the conditions randomly for each participant and for each session. They assessed gas exchange parameters by using a metabolic measurement system.
RESULTS: The authors used analysis of variance to compare all variables. They set the significance level at α = .05 and used a Tukey post hoc analysis of treatment means to identify differences between groups. The results showed significant improvements (P < .05) in VO(2,) VO(2) /kg and VCO(2) in the mouthpiece condition.
CONCLUSIONS: The study findings show that use of a custom-fitted mouthpiece resulted in improved specific gas exchange parameters. The authors are pursuing further studies to explain the mechanisms involved in the improved endurance performance exhibited with mouthpiece use.
CLINICAL IMPLICATIONS: Dental care professionals have an obligation to understand the increasing research evidence in support of mouthpiece use during exercise and athletic activity and to educate their patients.
Dena P Garner; Wesley D Dudgeon; Timothy P Scheett; Erica J McDivitt
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of the American Dental Association (1939)     Volume:  142     ISSN:  1943-4723     ISO Abbreviation:  J Am Dent Assoc     Publication Date:  2011 Sep 
Date Detail:
Created Date:  2011-09-01     Completed Date:  2012-01-26     Revised Date:  2012-04-09    
Medline Journal Info:
Nlm Unique ID:  7503060     Medline TA:  J Am Dent Assoc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1041-7     Citation Subset:  D; IM    
Department of Health, Exercise and Sports Science, Charleston, SC 29409, USA.
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MeSH Terms
Body Height
Body Weight
Carbon Dioxide / metabolism
Equipment Design
Heart Rate / physiology
Mouth Protectors*
Nose / physiology
Oxygen Consumption / physiology
Physical Endurance / physiology
Physical Exertion / physiology*
Physical Fitness / physiology
Pulmonary Gas Exchange / physiology*
Pulmonary Ventilation / physiology
Respiratory Rate / physiology
Running / physiology
Tidal Volume / physiology
Young Adult
Reg. No./Substance:
124-38-9/Carbon Dioxide
Comment In:
J Am Dent Assoc. 2012 Mar;143(3):218, 220; author reply 220, 222, 224   [PMID:  22383201 ]
J Am Dent Assoc. 2012 Mar;143(3):214, 216; author reply 216, 218   [PMID:  22383199 ]
Erratum In:
J Am Dent Assoc. 2012 Mar;143(3):228

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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