Τίτλος:
Carbohydrate mouth rinse does not affect performance during a 60-min running race in women
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
This study examined the effect of carbohydrate mouth rinsing on endurance running performance in women. Fifteen female recreational endurance runners, who used no oral contraceptives, ran two races of 1-h duration on an indoor track (216-m length) at 18:00 h after an 8-h fast with a 7-days interval between races, corresponding to the 3rd-10th day of each premenopausal runner’s menstrual cycle, or any day for the postmenopausal runners. In a double-blind random order, participants rinsed their mouth with 25 ml of either a 6.4% carbohydrate (RCHO) or a placebo solution (RP). No fluid was ingested during exercise. Serum 17β-Εstradiol (P = 0.59) and Progesterone (P = 0.35) did not differ between treatments. There was no difference in 1-hour running performance (RCHO: 10,621.88 ± 205.98 m vs. RP: 10,454.00 ± 206.64 m; t = 1.784, P = 0.096). Furthermore, the mean percentage effect (±99%CI) of RCHO relative to RP, 1.67% (−1.1% to 4.4%), and Cohen’s effect size (d = 0.21) support a trivial outcome of RCHO for total distance covered. In conclusion, carbohydrate mouth rinsing did not improve 60-min track running performance in female recreational runners competing in a low ovarian hormone condition, after an 8-h fast and when no fluid was ingested during exercise. © 2017 Informa UK Limited, trading as Taylor & Francis Group.
Συγγραφείς:
Chryssanthopoulos, C.
Ziaras, C.
Oosthuyse, T.
Lambropoulos, I.
Giorgios, P.
Zacharogiannis, E.
Philippou, A.
Maridaki, M.
Περιοδικό:
Journal of sports sciences
Λέξεις-κλειδιά:
estradiol; mouthwash; progesterone, administration and dosage; adult; athletic performance; blood; body mass; carbohydrate diet; competitive behavior; controlled study; diet; double blind procedure; exercise; female; heart rate; human; humidity; perception; physiology; randomized controlled trial; running; temperature, Adult; Athletic Performance; Body Mass Index; Competitive Behavior; Diet; Dietary Carbohydrates; Double-Blind Method; Estradiol; Female; Heart Rate; Humans; Humidity; Mouthwashes; Perception; Physical Exertion; Progesterone; Running; Temperature
DOI:
10.1080/02640414.2017.1344358