PMID- 36920510
OWN - NLM
STAT- MEDLINE
DCOM- 20230619
LR  - 20230619
IS  - 1439-6327 (Electronic)
IS  - 1439-6319 (Linking)
VI  - 123
IP  - 7
DP  - 2023 Jul
TI  - Carbohydrate mouth rinse is no more effective than placebo on running endurance 
      of dehydrated and heat acclimated athletes.
PG  - 1507-1518
LID - 10.1007/s00421-023-05170-y [doi]
AB  - PURPOSE: To determine whether carbohydrate mouth rinsing would improve endurance 
      running performance of tropical natives in a warm-humid (30  degrees C and 70% relative 
      humidity) environment. METHOD: Twelve endurance male runners [age 25 +/- 3 years; 
      peak aerobic capacity ([Formula: see text]O(2peak)) 
      57.6 +/- 3.6 mL(.)kg(-1)(.)min(-1)] completed three time-to-exhaustion (TTE) trials 
      at ~ 70% [Formula: see text]O(2peak) while swilling 25 ml of a 6% carbohydrate 
      (CHO) or taste-matched placebo (PLA) as well as no mouth rinse performed in the 
      control (CON) trial. RESULTS: TTE performance was significantly longer in both 
      CHO and PLA trials when compared with the CON trial (54.7 +/- 5.4 and 53.6 +/- 5.1 
      vs. 48.4 +/- 3.6 min, respectively; p < 0.001 and p = 0.012, respectively), but was 
      not significantly different between CHO and PLA trials (p = 1.000). The rating of 
      perceived exertion was not different between the CHO and PLA trials, however, was 
      significantly affected when compared to the CON trial (p < 0.001). A similar 
      effect was observed for perceived arousal level between the CHO and PLA trials to 
      the CON trial. Core temperature, mean skin temperature and skin blood flow were 
      not significantly different between the three trials (all p > 0.05). Similarly, 
      plasma lactate and glucose as well as exercise heart rate were not influenced by 
      the trials. CONCLUSIONS: The present study demonstrates that mouth rinsing, 
      whether carbohydrate or placebo, provides an ergogenic benefit to running 
      endurance when compared to CON in a heat stress environment. Nevertheless, the 
      results do not support the notion that rinsing a carbohydrate solution provides a 
      greater advantage as previously described among non-heat acclimated individuals 
      within a temperate condition.
CI  - (c) 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, 
      part of Springer Nature.
FAU - Kamaruddin, Harris Kamal
AU  - Kamaruddin HK
AUID- ORCID: 0000-0001-6964-0688
AD  - Faculty of Sports Science and Recreation, Universiti Teknologi MARA, Cawangan 
      Perlis, Kampus Arau, Perlis, Malaysia.
AD  - Department of Community Health, Advanced Medical and Dental Institute, Universiti 
      Sains Malaysia, Kepala Batas, Penang, Malaysia.
FAU - Farah, Nor M F
AU  - Farah NMF
AUID- ORCID: 0000-0003-0289-5795
AD  - Center for Community Health Studies, Faculty of Health Sciences, Universiti 
      Kebangsaan Malaysia, Kuala Lumpur, Malaysia.
FAU - Aziz, Abdul Rashid
AU  - Aziz AR
AUID- ORCID: 0000-0002-7727-7484
AD  - Sports Science and Medicine, Singapore Sport Institute, Singapore, Singapore.
FAU - Mundel, Toby
AU  - Mundel T
AUID- ORCID: 0000-0002-4214-8543
AD  - School of Sport, Exercise and Nutrition, Massey University, Palmerston North, New 
      Zealand.
AD  - Department of Kinesiology, Brock University, St. Catharines, Canada.
FAU - Che Muhamed, Ahmad Munir
AU  - Che Muhamed AM
AUID- ORCID: 0000-0002-0254-6838
AD  - Department of Community Health, Advanced Medical and Dental Institute, Universiti 
      Sains Malaysia, Kepala Batas, Penang, Malaysia. ahmadmunir@usm.my.
LA  - eng
PT  - Journal Article
DEP - 20230315
PL  - Germany
TA  - Eur J Appl Physiol
JT  - European journal of applied physiology
JID - 100954790
RN  - 0 (Mouthwashes)
RN  - 0 (Dietary Carbohydrates)
RN  - 0 (Polyesters)
SB  - IM
MH  - Humans
MH  - Male
MH  - Young Adult
MH  - Adult
MH  - *Mouthwashes/pharmacology
MH  - Dietary Carbohydrates/pharmacology
MH  - *Running/physiology
MH  - Exercise/physiology
MH  - Polyesters/pharmacology
MH  - Physical Endurance/physiology
OTO - NOTNLM
OT  - Dextrose
OT  - Endurance
OT  - Heat stress
OT  - Mouth rinse
OT  - Treadmill
EDAT- 2023/03/16 06:00
MHDA- 2023/06/19 13:08
CRDT- 2023/03/15 12:13
PHST- 2022/06/19 00:00 [received]
PHST- 2023/02/27 00:00 [accepted]
PHST- 2023/06/19 13:08 [medline]
PHST- 2023/03/16 06:00 [pubmed]
PHST- 2023/03/15 12:13 [entrez]
AID - 10.1007/s00421-023-05170-y [pii]
AID - 10.1007/s00421-023-05170-y [doi]
PST - ppublish
SO  - Eur J Appl Physiol. 2023 Jul;123(7):1507-1518. doi: 10.1007/s00421-023-05170-y. 
      Epub 2023 Mar 15.