Repeated mouth rinsing of coffee improves the specific-endurance performance and jump performance of young male futsal players

Abstract

Background Mouth-rinsing with ergogenic solutions such as carbohydrate and caffeinated drinks has been considered among athletes as a practical nutritional strategy. Therefore, this study aimed to determine the effect of repeated coffee mouth-rinsing (CMR) doses on specific performances of futsal players. Method Twenty-four male futsal players randomly participated in this randomized, double-blind, and crossover design study. During the intervention, participants were randomly placed in four different conditions including 1. low-dose CMR (LDC, n = 6, ~60 mg caffeine); 2. high-dose CMR (HDC, n = 6, ~125 mg caffeine); 3. decaffeinated CMR (PLA, n = 6, ~10 mg caffeine); and 4. no CMR (CON, n = 6). Vertical jump height was measured at baseline, baseline after CMR (baseline-CMR), immediately after the intermittent futsal endurance test (FIET) (IA-FIET), 5 min after the FIET (5”A-FIET) and 10 min after the FIET (10”A-FIET). Perceived fatigue was also measured by visual analogue scale (VAS) at baseline, IA-FIET, 5”A-FIET, and 10”A-FIET. CMR was also performed at baseline, during FIET (Repeated between levels), and 10’A-FIET. The collected data were analyzed (with SPSS software) by one- and two-way repeated measure ANOVA and Bonferroni post hoc test at P < 0.05 level. Results The findings of the present study illustrated that the perceived fatigue in IA-FIET increased significantly compared to the baseline which was accompanied by a significant decrease in 5”A-FIET and 10”A-FIET compared to IA-FIET ( P < 0.05), and no significant difference was observed between conditions in the baseline, IA-FIET, 5”A-FIET, and 10”A-FIET ( P > 0.05). However, HDC and LDC rose significantly the distance covered in FIET compared to CON and PLA ( P < 0.05). In addition, HDC increased the FIET performance more than LDC ( P < 0.05). Although there was no difference between any of the conditions at baseline ( P > 0.05), baseline-CMR increased significantly the vertical jump height ( P < 0.05). At IA-FIET, vertical jump height decreased to baseline levels in CMR conditions but increased in 5”A-FIET, which remained constant until 10”A-FIET ( P < 0.05). In addition, vertical jump height in HDC and LDC conditions was significantly higher than CON in IA-FIET, 5”A-FIET, and 10”A-FIET. Conclusion This study showed that repeated CMR with low and high doses is a useful strategy to improve specific futsal performance. However, higher dose CMR appears to have more profound effects on performance improvement than lower doses.

Effects of Different Doses of Caffeine Supplementation on Collegiate Male Volleyball Players’ Specific Performance and Skills: A Randomized, Double-Blind, Placebo-Controlled, Crossover Study

“…Previous studies have also shown the positive effects of caffeine on agility performance [ 37 , 38 , 39 ], vertical jump [ 11 , 22 , 40 , 41 , 42 , 43 ], or special volleyball skills [ 23 , 24 ]. Several meta-analyses have also confirmed that caffeine can improve vertical jump [ 26 , 44 , 45 , 46 ] or agility performance [ 46 , 47 ].…”

“…Caffeine is rapidly distributed in the body and affects the central nervous, respiratory, cardiovascular, and musculoskeletal systems [ 10 , 11 ]. Caffeine blood level increases 15 min after consumption, and the peak of its increase is after 60 min [ 9 ].…”

Early absorption sources of caffeine can be a useful strategy for improving female table tennis players-specific performance

“…For example, a relatively low absolute dose of caffeine (300 mg) given as gum, 10 min before exercise, has been reported to be effective for acute improvements in vertical jump height, lower body muscle strength, and total body strength in resistance-trained men [ 44 ]. Also, repeated CMR improved vertical jump performance in futsal players [ 15 ]. However, some studies showed inconsistent results.…”

“…In PLA condition, participants consumed one capsule containing 5 grams of starch 45 minutes before the start of the tests ( Figure 2 ). All trials were completed at approximately the same time of day (Between 10–11 am) and all participants were fed the same breakfast containing 350–400 kcal (64% carbohydrates, 20% protein and 16% fat) 2 hours before the exercise test session [ 15 ]. Participants were instructed to maintain their normal diet throughout the testing period, to avoid food an hour before testing, and to avoid strenuous exercise 24 hours before each trial.…”

“…Also, the information obtained from the studies shows that the benefits of consuming carbohydrates and caffeinated drinks are similar [ 14 ]. For example, research has shown that repeated mouth rinsing with low and high doses of espresso coffee is a useful strategy for improving the specific function of male futsal players, however, higher dose coffee mouth rinsing appears to have more profound effects on performance improvement than lower doses [ 15 ].…”