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Ingesting a pre-workout supplement containing caffeine, B-vitamins, amino acids, creatine, and beta-alanine before exercise delays fatigue while improving reaction time and muscular endurance.

Spradley BD, Crowley KR, Tai CY, Kendall KL, Fukuda DH, Esposito EN, Moon SE, Moon JR.

Nutr Metab (Lond). 2012 Mar 30;9:28. doi: 10.1186/1743-7075-9-28.


The effect of acute pre-workout supplementation on power and strength performance.

Martinez N, Campbell B, Franek M, Buchanan L, Colquhoun R.

J Int Soc Sports Nutr. 2016 Jul 16;13:29. doi: 10.1186/s12970-016-0138-7. eCollection 2016.


Ingesting a preworkout supplement containing caffeine, creatine, β-alanine, amino acids, and B vitamins for 28 days is both safe and efficacious in recreationally active men.

Kendall KL, Moon JR, Fairman CM, Spradley BD, Tai CY, Falcone PH, Carson LR, Mosman MM, Joy JM, Kim MP, Serrano ER, Esposito EN.

Nutr Res. 2014 May;34(5):442-9. doi: 10.1016/j.nutres.2014.04.003. Epub 2014 Apr 13.


Examination of a pre-exercise, high energy supplement on exercise performance.

Hoffman JR, Kang J, Ratamess NA, Hoffman MW, Tranchina CP, Faigenbaum AD.

J Int Soc Sports Nutr. 2009 Jan 6;6:2. doi: 10.1186/1550-2783-6-2.


The acute effects of a multi-ingredient pre-workout supplement on resting energy expenditure and exercise performance in recreationally active females.

Cameron M, Camic CL, Doberstein S, Erickson JL, Jagim AR.

J Int Soc Sports Nutr. 2018 Jan 5;15:1. doi: 10.1186/s12970-017-0206-7. eCollection 2018.


Effects of a Pre-workout Energy Drink Supplement on Upper Body Muscular Endurance Performance.

Magrini MA, Colquhoun RJ, Dawes JJ, Smith DB.

Int J Exerc Sci. 2016 Nov 1;9(5):667-676. eCollection 2016.


Effect of a 10-week strength training program and recovery drink on body composition, muscular strength and endurance, and anaerobic power and capacity.

Chromiak JA, Smedley B, Carpenter W, Brown R, Koh YS, Lamberth JG, Joe LA, Abadie BR, Altorfer G.

Nutrition. 2004 May;20(5):420-7.


The possible combinatory effects of acute consumption of caffeine, creatine, and amino acids on the improvement of anaerobic running performance in humans.

Fukuda DH, Smith AE, Kendall KL, Stout JR.

Nutr Res. 2010 Sep;30(9):607-14. doi: 10.1016/j.nutres.2010.09.004.


Examination of A Multi-Ingredient Pre-Workout Supplement on Total Volume of Resistance Exercise and Subsequent Strength and Power Performance.

Bergstrom HC, Byrd MT, Wallace BJ, Clasey JL.

J Strength Cond Res. 2018 Feb 1. doi: 10.1519/JSC.0000000000002480. [Epub ahead of print]


Effect of a pre-workout energy supplement on acute multi-joint resistance exercise.

Gonzalez AM, Walsh AL, Ratamess NA, Kang J, Hoffman JR.

J Sports Sci Med. 2011 Jun 1;10(2):261-6. eCollection 2011.


The acute effects of multi-ingredient pre-workout ingestion on strength performance, lower body power, and anaerobic capacity.

Jagim AR, Jones MT, Wright GA, St Antoine C, Kovacs A, Oliver JM.

J Int Soc Sports Nutr. 2016 Mar 8;13:11. doi: 10.1186/s12970-016-0122-2. eCollection 2016.


Acute effects of a commercially-available pre-workout supplement on markers of training: a double-blind study.

Outlaw JJ, Wilborn CD, Smith-Ryan AE, Hayward SE, Urbina SL, Taylor LW, Foster CA.

J Int Soc Sports Nutr. 2014 Aug 15;11:40. doi: 10.1186/s12970-014-0040-0. eCollection 2014.


The effects of acute and prolonged CRAM supplementation on reaction time and subjective measures of focus and alertness in healthy college students.

Hoffman JR, Ratamess NA, Gonzalez A, Beller NA, Hoffman MW, Olson M, Purpura M, Jäger R.

J Int Soc Sports Nutr. 2010 Dec 15;7:39. doi: 10.1186/1550-2783-7-39.


Impact of Four Weeks of a Multi-Ingredient Performance Supplement on Muscular Strength, Body Composition, and Anabolic Hormones in Resistance-Trained Young Men.

Kreipke VC, Allman BR, Kinsey AW, Moffatt RJ, Hickner RC, Ormsbee MJ.

J Strength Cond Res. 2015 Dec;29(12):3453-65. doi: 10.1519/JSC.0000000000000995.


The influence of direct supervision of resistance training on strength performance.

Mazzetti SA, Kraemer WJ, Volek JS, Duncan ND, Ratamess NA, Gómez AL, Newton RU, Häkkinen K, Fleck SJ.

Med Sci Sports Exerc. 2000 Jun;32(6):1175-84.


Effects of acute ingestion of a pre-workout dietary supplement with and without p-synephrine on resting energy expenditure, cognitive function and exercise performance.

Jung YP, Earnest CP, Koozehchian M, Galvan E, Dalton R, Walker D, Rasmussen C, Murano PS, Greenwood M, Kreider RB.

J Int Soc Sports Nutr. 2017 Jan 12;14:3. doi: 10.1186/s12970-016-0159-2. eCollection 2017.


Improved time to exhaustion following ingestion of the energy drink Amino Impact.

Walsh AL, Gonzalez AM, Ratamess NA, Kang J, Hoffman JR.

J Int Soc Sports Nutr. 2010 Apr 15;7:14. doi: 10.1186/1550-2783-7-14.


Effect of a proprietary protein supplement on recovery indices following resistance exercise in strength/power athletes.

Hoffman JR, Ratamess NA, Tranchina CP, Rashti SL, Kang J, Faigenbaum AD.

Amino Acids. 2010 Mar;38(3):771-8. doi: 10.1007/s00726-009-0283-2. Epub 2009 Apr 4.


Creatine supplementation prevents acute strength loss induced by concurrent exercise.

de Salles Painelli V, Alves VT, Ugrinowitsch C, Benatti FB, Artioli GG, Lancha AH Jr, Gualano B, Roschel H.

Eur J Appl Physiol. 2014 Aug;114(8):1749-55. doi: 10.1007/s00421-014-2903-0. Epub 2014 May 20.


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