PMID- 32560472 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240329 IS - 2075-4663 (Electronic) IS - 2075-4663 (Linking) VI - 8 IP - 6 DP - 2020 Jun 17 TI - Repeated Menthol Mouth Swilling Affects Neither Strength nor Power Performance. LID - 10.3390/sports8060090 [doi] LID - 90 AB - This study aimed to assess the effects of repeated menthol mouth swilling upon strength and power performance. Nineteen (10 male) participants completed familiarisation and experimental trials of repeated menthol mouth swilling (0.1% concentration) or control (no swill) in a randomised crossover design. Participants performed an isometric mid-thigh pull (IMTP; peak and mean force; N), vertical jump (peak; cm) and six second sprint (peak and mean power; W) under each condition. Participants completed three efforts per exercise task interspersed with three-minute recoveries. Mean best values were analysed via a two-way mixed repeated measures ANOVA, and differences reported as effect sizes +/- 95% confidence intervals, with accompanying descriptors and p values. Differences in peak IMTP values were unclear between familiarisation and experimental trials, and between menthol and control conditions. Mean IMTP force differed between familiarisation and control (0.51; -0.15 to 1.14; p = 0.001) and familiarisation and menthol conditions (0.50; -0.15 to 1.14; p = 0.002) by a small degree, but were unclear between control and menthol conditions. Unclear differences were also noted on vertical jump performance compared to familiarisation and between experimental conditions, with repeated six second peak and average power performance also showing unclear effects across all comparisons. We conclude that repeated menthol mouth swilling does not improve strength or power performance. FAU - Best, Russ AU - Best R AD - Centre for Sport Science and Human Performance, Wintec, Hamilton 3200, New Zealand. AD - School of Health and Life Sciences, Teesside University, Middlesbrough TS1 3BX, UK. FAU - Temm, Dani AU - Temm D AD - Centre for Sport Science and Human Performance, Wintec, Hamilton 3200, New Zealand. FAU - Hucker, Holly AU - Hucker H AD - Centre for Sport Science and Human Performance, Wintec, Hamilton 3200, New Zealand. FAU - McDonald, Kerin AU - McDonald K AD - Centre for Sport Science and Human Performance, Wintec, Hamilton 3200, New Zealand. LA - eng PT - Journal Article DEP - 20200617 PL - Switzerland TA - Sports (Basel) JT - Sports (Basel, Switzerland) JID - 101722684 PMC - PMC7353636 OTO - NOTNLM OT - menthol OT - power output OT - repeated sprint OT - strength OT - vertical jump COIS- The authors declare no conflict of interest. EDAT- 2020/06/21 06:00 MHDA- 2020/06/21 06:01 PMCR- 2020/06/17 CRDT- 2020/06/21 06:00 PHST- 2020/05/11 00:00 [received] PHST- 2020/06/05 00:00 [revised] PHST- 2020/06/16 00:00 [accepted] PHST- 2020/06/21 06:00 [entrez] PHST- 2020/06/21 06:00 [pubmed] PHST- 2020/06/21 06:01 [medline] PHST- 2020/06/17 00:00 [pmc-release] AID - sports8060090 [pii] AID - sports-08-00090 [pii] AID - 10.3390/sports8060090 [doi] PST - epublish SO - Sports (Basel). 2020 Jun 17;8(6):90. doi: 10.3390/sports8060090.