title: Mouth Rinsing with Maltodextrin Solutions Fails to Improve Time Trial Endurance Cycling Performance in Recreational Athletes.
abstract: The carbohydrate (CHO) concentration of a mouth rinsing solution might influence the CHO sensing receptors in the mouth, with consequent activation of brain regions involved in reward, motivation and regulation of motor activity. The purpose of the present study was to examine the effects of maltodextrin mouth rinsing with different concentrations (3%, 6% and 12%) after an overnight fast on a 20 km cycling time trial performance. Nine recreationally active, healthy males (age: 24 ± 2 years; V ˙ O 2 m a x : 47 ± 5 mL·kg(-1)·min(-1)) participated in this study. A double-blind, placebo-controlled randomized study was conducted. Participants mouth-rinsed every 2.5 km for 5 s. Maltodextrin mouth rinse with concentrations of 3%, 6% or 12% did not change time to complete the time trial and power output compared to placebo (p > 0.05). Time trial completion times were 40.2 ± 4.0, 40.1 ± 3.9, 40.1 ± 4.4, and 39.3 ± 4.2 min and power output 205 ± 22, 206 ± 25, 210 ± 24, and 205 ± 23 W for placebo, 3%, 6%, and 12% maltodextrin conditions, respectively. Heart rate, lactate, glucose, and rating of perceived exertion did not differ between trials (p > 0.05). In conclusion, mouth rinsing with different maltodextrin concentrations after an overnight fast did not affect the physiological responses and performance during a 20 km cycling time trial in recreationally active males.
authors.affiliation: Division of Nutrition and Metabolism in Exercise, Faculty of Sport Sciences, Hacettepe University, Beytepe, Ankara 06800, Turkey. nilaygungor17@gmail.com.|Department of Sport Sciences, Bağlıca Campus, Başkent University, Ankara 06530, Turkey. nilaygungor17@gmail.com.
authors.forename: Tuğba Nilay
authors.initials: TN
authors.lastname: Kulaksız
authors.affiliation: Division of Nutrition and Metabolism in Exercise, Faculty of Sport Sciences, Hacettepe University, Beytepe, Ankara 06800, Turkey. nazankosar@gmail.com.
authors.forename: Şükran Nazan
authors.initials: ŞN
authors.lastname: Koşar
authors.affiliation: Division of Nutrition and Metabolism in Exercise, Faculty of Sport Sciences, Hacettepe University, Beytepe, Ankara 06800, Turkey. slmbulut@gmail.com.
authors.forename: Suleyman
authors.initials: S
authors.lastname: Bulut
authors.affiliation: Division of Nutrition and Metabolism in Exercise, Faculty of Sport Sciences, Hacettepe University, Beytepe, Ankara 06800, Turkey. ysmnonur@gmail.com.
authors.forename: Yasemin
authors.initials: Y
authors.lastname: Güzel
authors.affiliation: Department of Sport and Exercise Sciences, University of Chichester, College Lane, Chichester PO17 6PE, UK. m.willems@chi.ac.uk.
authors.forename: Marcus Elisabeth Theodorus
authors.initials: ME
authors.lastname: Willems
authors.affiliation: Division of Sport and Coaching, Faculty of Sport Sciences, Hacettepe University, Beytepe, Ankara 06800, Turkey. thazir@hacettepe.edu.tr.
authors.forename: Tahir
authors.initials: T
authors.lastname: Hazir
authors.affiliation: Division of Nutrition and Metabolism in Exercise, Faculty of Sport Sciences, Hacettepe University, Beytepe, Ankara 06800, Turkey. husrevturnagol@gmail.com.
authors.forename: Hüseyin Hüsrev
authors.initials: HH
authors.lastname: Turnagöl
mesh_terms: D000284:Administration, Oral; D000328:Adult; D001642:Bicycling / Q000502:physiology*; D001786:Blood Glucose / Q000187:drug effects; D004311:Double-Blind Method; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D019344:Lactic Acid / Q000097:blood; D008297:Male; D009067:Mouthwashes; D010807:Physical Endurance / Q000502:physiology*; D011134:Polysaccharides / Q000008:administration & dosage / Q000494:pharmacology*; D011998:Recreation; D055815:Young Adult
chemical_list: D001786:Blood Glucose; D009067:Mouthwashes; D011134:Polysaccharides; D019344:Lactic Acid; C008315:maltodextrin
keywords: cycling; endurance performance; maltodextrin solution; mouth rinse