Maple Products and Cognitive Performance During High Intensity Intermittent Exercise (HIIE)

Subjects will be required to ingest 1 liter of the experimental solution, spread over the 45 minutes of exercise. A first ingestion of 167 mL of solution will be made at rest, right before starting warmup, and another dose (167 mL) after it. Four additional doses of 167 mL will be ingested immediately after the first four 3-minute bouts at 95% of Maximal Aerobic Power. A final dose (167 mL) will be ingested after the last effort.

"Subjects will be required to undergo the Stroop task. They will have to answer as quickly as possible, with push buttons, to a colour stimulus, following specific rules, and get the highest possible number of right answers. The flexibility block will show a pre-signal on a screen in front of the subject (a square or a cross will be shown). The form presented will indicate if the subject must use the colour of the writing, or the word written. Each block will consist of 50 trials, 25% of which switching the condition of answer. During this test, reaction time in milliseconds (ms) as well as the number of right answers will be measured.~This test will be measured before the exercise protocol, during the 3-minutes exercise bouts, and every 15 minutes during the 45 minutes following exercise."

"Optic imagery (Near-infrared spectroscopy, or NIRS) is a non-invasive technique allowing a fine investigation of the inner workings of the brain. It allows discrimination of oxygenated hemoglobin from deoxygenated hemoglobin, which informs on the coupling between blood flow and oxygen consumption inside the brain. To measure brain oxygenation with NIRS, optodes will be installed on the subject's skin without glue or transmission gel.~\[ Time Frame: During Stroop's task (i.e.before the exercise protocol, during the 3-minutes exercise bouts, and every 15 minutes during the 45 minutes following exercise). \] Measured with near-infrared spectroscopy (NIRS)."

Subjects will be asked to fill out a short form on the palatability of the solution ingestion, after ingesting the first solution and at the end of exercise, after ingestion the last solution.

Blood glucose will be measured with a puncture on the tip of a finger to get a droplet of blood.

Perceived exertion will be assessed using 3 scales : Borg (RPE), and DP-15 scale for mental effort (Delignières, Brisswalter, \& Legros, 1994). These scales will be administrated at the end of each 3 minute high intensity bout.

6 3-minute bouts at 95% of maximal aerobic power will be done on a bike. Each bout will be separated by 3 minutes of passive recovery. The last bout will be followed by 45 minutes of rest.