Repeated-sprints exercise in daylight fasting: carbohydrate mouth rinsing does not affect sprint and reaction time performance

Abstract

To determine the effect of carbohydrate mouth rinsing (CHO-MR) on physical and cognitive performance during repeated-sprints (RS) after 3 days of intermittent fasting (abstaining from food and fluid 14 h per day). In a randomized and counter-balanced manner 15 active healthy males in a fasted state performed a RS-protocol [RSP; 2 sets (SET1 and SET2) of 5×5 s maximal sprints, with each sprint interspersed with 25 s rest and 3 min of recovery between SET1 and SET2] on an instrumented non-motorized treadmill with embedded force sensors under three conditions: i) Control (CON; no-MR), ii) Placebo-MR (PLA-MR; 0% maltodextrin) and iii) CHO-MR (10% maltodextrin). Participants rinsed their mouth with either 10 mL of PLA-MR or CHO-MR solution for 5 s before each sprint. Sprint kinetics were measured for each sprint and reaction time (RTI) tasks (simple and complex) were assessed pre-, during- and post-RSP. There was no statistical main effect of CHO-MR on mean power, mean speed, and vertical stiffness during the sprints between the PLA-MR and CON condition. Additionally, no statistical main effect for CHO-MR on accuracy, movement time and reaction time during the RTI tasks was seen. CHO-MR did not affect physical (RSP) or cognitive (RTI) performance in participants who had observed 3 days of intermittent fasting (abstaining from food and fluid 14 h per day).

Maltodextrin-Based Carbohydrate Oral Rinsing and Exercise Performance: Systematic Review and Meta-Analysis

“…Additionally, improvements in exercise performance after an oral carbohydrate rinse in comparison with a placebo rinse have been found with cycling [29][30][31][32][33], running [34][35][36][37] and resistance exercise [38]. In contrast, some studies have reported no significant improvements in exercise performance [39][40][41][42][43][44][45][46]. This lack of significant improvements may be due to the study design (i.e.…”

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“…Similarly, exercise performance improvements with carbohydrate oral rinsing have also been evident in running [34][35][36][37]. In running-based studies, the mode of exercise included sprints [41,43,82] and time trials [73,86]. Unlike cycling-based exercise tests, where tests are typically conducted on a cycle ergometer, research methods in runningbased studies were mixed, using stationary treadmill running [41,83,86] and self-paced running indoors [43,72,75,81,82] and outdoors [73].…”

Competing in the Ramadan fasted state: for spirituality, health and performance

“…Increasing the proportion of low-glycaemic-index foods in the suhoor meal (pre-fast) has been proposed, but this has little effect on subsequent aerobic performance 7 8. Buccal (mouth) rinses with carbohydrate-containing drinks may ameliorate some of the potential negative impacts of fasting but are of benefit only in endurance and not repeated sprint performance 9. Some athletes may choose to use this strategy, but it is important to note that there is a small risk of inadvertently swallowing fluid or for small quantities of carbohydrate or water to remain in the mouth after rinsing.…”

Analisis hasil tes waktu reaksi rangsangan suara dan warna atlet Tarung Drajat persiapan PON

“…Ternyata orang yang menjalani puasa 14 jam dan melakukan latihan seperti biasa tidak mengalami pengaruh pada waktu reaksi (Cherif et al, 2018), penelitian ini dilakukan berulang selama 3 hari berpuasa. Dilakukan pengujian waktu reaksi antara orang yang mengalami gangguan pendengaran dengan atlet, ditemukan bahwa atlet lebih pendek waktu yang diperlukan tetapi diantara sesama atlet dengan level kompetisi yang berbeda waktu reaksinya cenderung sama (Soto-Rey, Pérez-Tejero, Rojo-González, & Reina, 2014) Waktu reaksi antara atlet dan non atlet kenyataannya lebih bagus atlet (dengan sampel atlet bulu tangkis), tetapi faktor kemampuan untuk memproses kecepatan visual ini bukan saja dari kemampuan kemampuan visiomotor, dengan kata lain kemampuan perseptual visual bukan satu satunya indikator seseorang memiliki waktu reaksi yang cepat (Hülsdünker, Strüder, & Mierau, 2018).…”