Results (cont’d) Results. Abstract Methods Methods (cont’d) Purpose Conclusions Mario Arciniega, J.R. Wilson, Ph. D : Neuromuscular Research Laboratory, The University of Texas at Arlington, Arlington, TX; THE “PRE-WORKOUT” EFFECT INTRODUCTION: The consumption of Jack3D along with various other pre-workout supplements before a workout has become more than just the norm in the fitness world. However, are the products as effective as they are marketed to be? A one repetition max test can easily measure the strength of an individual and can be used as a tool in exercise prescription for resistance training. A one repetition max test is performed in three to four lifts and allows the individual to view their maximum load capability for a particular muscle group. The use of these measurement scales, perceived rate of focus [scale of 1-10) and rate of perceived exertion (RPE)] allow an objective determination of the motivation along with 1RM on the effects of consumption of a pre-workout supplement or placebo prior to exercise. PURPOSE: The specific purpose of this research study was to test the impact of the consumption a pre-workout supplement before resistance exercise. METHODS: Six men ( yrs) who practice resistance training agreed to perform a 1 repetition max test (1RM) on two separate occasions. Upon arrival of the two visits, the participants consumed either a “pre-workout” placebo marketed to be Jack3d or the equivalent measure of water and then waited minutes to perform the 1RM test for bench and squat. Heart Rate and Blood pressure were taken during the waiting period and the participant’s perceived rate of focus (scale of 1-10) was taken just before their first lift. Three to Four lifts were performed and the rate of perceived exertion (RPE Borg scale 6-20) was noted. Heart rate and perceived rate of focus were also recorded and taken into account for evaluation. RESULTS: When evaluating the RPE between bench and squat with consumption of a placebo to no consumption, the data showed that there was a significant difference between the two groups (p 0.05). CONCLUSION: The subjects believed that they were consuming Jack3d prior to the 1RM but in fact consumed a placebo (Kool-aid). The difference between RPE in the placebo to non-placebo consumption support that “motivation” for exercise can be achieved through the mind rather than by a supplement. Therefore, the theory that the consumption of a pre-workout supplement prior to an exercise bout is not as necessary as many people think, was supported. The specific purpose of this research study was to test the impact of the consumption of a pre-workout supplement before resistance exercise. Six men ( ) who practice resistance training agreed to perform a 1 repetition max test (1RM) on two separate occasions. Upon arrival of the two visits, the participants consumed either a “pre-workout” placebo marketed to be Jack3d or the equivalent measure of water and then allowed to wait minutes to perform the 1RM test for bench and squat. Heart Rate and Blood pressure were taken during the first 15 minutes of the waiting period and the participants were allowed to warm up just before their first lift. Prior to the first lift, the participant’s perceived rate of focus (scale of 1-10) was taken for evaluation. Three to four lifts were performed with two minute rest periods and the rate of perceived exertion (RPE Borg scale 6-20) was noted after each lift. Heart rate and perceived rate of focus were also recorded after each lift and taken into account for evaluation. A debriefing statement was issued on the last day of testing to inform the subjects on their deception. They were told that they consumed a placebo rather than a supplement and asked to not reveal the deception to any other candidates if testing were still to occur. When evaluating the RPE between bench and squat with consumption of a placebo (bench: ; squat: ) to no consumption( ; ) the data showed that there was a significant difference between the two groups in the final lift (p < 0.5). There was not a significant difference between the heart rates due to no physiological responses occurring with consumption of the placebo The subjects believed that they were consuming Jack3d prior to the 1RM but in fact consumed a placebo (Kool-aid). The difference between RPE in the placebo to non-placebo consumption support the theory that “motivation” for exercise can be achieved through the mind rather than by a supplement. Therefore, the theory that the consumption of a pre-workout supplement prior to an exercise bout is not as necessary as many people think, was supported. (vasodilation/increased HR). However, when looking at the perceived rate of focus between supplement ( ; )/ no supplement consumption( ; ), there was a significant difference between the squat 1 RM (p=0.01). Analyzing the last lift for the bench 1 RM perceived rate of focus between the placebo and non-placebo consumption did not prove to show any significant difference (p > 5). Perceived Rate of Focus 1-No Feeling 2 3-Onset of Alertness 4 5-Alert 6 7-Focused Extremely Focused