King Grub
2012-04-06, 08:38
The purpose of the present study was to determine the most efficacious time to administer caffeine (CAF) in chewing gum to enhance cycling performance. Eight male cyclists participated in 5 separate laboratory sessions. During the first visit, subjects underwent a graded exercise test to determine maximal oxygen consumption (VO2max). During the next 4 visits, three pieces of chewing gum were administered at three time points (120 min pre-cycling, 60 min pre-cycling, and 5 min pre-cycling). In three of the four visits, at one of the time points mentioned previously, 300 mg of CAF was administered. During the fourth visit, placebo gum was administered at all 3 time points. The experimental trials were defined as follows: Trial A (-120), Trial B (-60), Trial C (-5), and Trial D (Placebo). Following baseline measurements, time allotted for gum administration, and a standard warm-up, participants cycled at 75% VO2max for 15 min then completed a 7 kj·kg cycling time trial. Data were analyzed using a repeated measures analysis of variance. Cycling performance was improved in Trial C (-5), but not in Trial A (-120) or Trial B (-60), relative to Trial D (Placebo). Caffeine administered in chewing gum enhanced cycling performance when administered immediately prior, but not when administered 1 or 2 hr prior to cycling.
J Strength Cond Res. 2012 Apr 3. Caffeine Gum and Cycling Performance: A Timing Study.
J Strength Cond Res. 2012 Apr 3. Caffeine Gum and Cycling Performance: A Timing Study.