A 0.1% L-Menthol Mouth Swill in Elite Male Rugby Players Has Different Effects in Forwards and Backs.
- Publisher:
- Human Kinetics
- Publication Type:
- Journal Article
- Citation:
- International Journal of Sports Physiology and Performance, 2023, 18, (9), pp. 909-917
- Issue Date:
- 2023-09-01
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| 22251902_13251483560005671.pdf | Published version | 875.4 kB |
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PURPOSE Menthol mouth swills can improve endurance performance in the heat which is attributed to attenuations in nonthermally derived thermal sensation TS and perception of effort However research in elite team sport athletes is absent Therefore this study investigated the performance and TS responses to a 0 1 menthol mouth rinse MR or placebo PLA among elite male rugby union players METHOD Twenty seven 15 Forwards and 12 Backs elite male Super Rugby players completed two 3 minute 15 a side rugby specific conditioning blocks with MR or PLA provided at the start of training baseline at the start of each 3 minute block swill 1 S1 and swill 2 S2 and at the end of training swill 3 S3 TS was assessed using the American Society of Heating Refrigerating and Air Conditioning Engineers 9 point Analog Sensation Scale after each swill and at baseline preconditioning block Acceptability was measured after baseline swill and S3 using a 5 question Likert scale Physical performance was measured throughout training using global positioning system metrics RESULTS MR attenuated TS from baseline to S1 P 003 SD 1 01 and S2 P 002 SD 1 09 in Forwards only compared with PLA Acceptability was higher only for Forwards in MR versus PLA at baseline P 003 SD 1 3 and S3 P 004 SD 0 75 MR had no effect on physical performance metrics P 05 CONCLUSION MR attenuated the rise in TS with higher acceptability at S1 and S3 in Forwards only with no effect on selected physical performance metrics Longer duration exercise eg a match in hot humid conditions eliciting markedly increased body temperatures could theoretically allow favorable changes in TS to enhance performance these postulations warrant experimental investigation
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