Jay R. Hoffman

Improved time to exhaustion following ingestion of the energy drink Amino Impact™ (2010)

Walsh, Allyson L, Gonzalez, Adam M, Ratamess, Nicholas A, Kang, Jie, Hoffman, Jay R

Abstract Background The purpose of this study was to examine the effect of a commercially available energy drink on time to exhaustion during treadmill exercise. In addition, subjective measures of...

Examination of the efficacy of acute L-alanyl-L-glutamine ingestion during hydration stress in endurance exercise (2010)

Hoffman, Jay R, Ratamess, Nicholas A, Kang, Jie, Rashti, Stephanie L, Kelly, Neil, Gonzalez, Adam M, ...

Abstract Background The effect of acute L-alanyl-L-glutamine (AG; Sustamine™) ingestion on performance changes and markers of fluid regulation, immune, inflammatory, oxidative stress, and recovery...

Thermogenic effect of meltdown RTD™ energy drink in young healthy women: a double blind, cross-over design study (2009)

Rashti, Stefanie L, Ratamess, Nicholas A, Kang, Jie, Faigenbaum, Avery D, Chilakos, Aristomen, Hoffman, Jay R

Abstract Background The purpose of this study was to examine the acute metabolic effects of a high-energy drink in healthy, physically-active women. Methods Ten women (20.4 ± 0.70 y; 166.9 ± 7.2...

Effect of betaine supplementation on power performance and fatigue (2009)

Hoffman, Jay R, Ratamess, Nicholas A, Kang, Jie, Rashti, Stefanie L, Faigenbaum, Avery D

Abstract Background The purpose of this study was to examine the efficacy of 15 days of betaine supplementation on muscle endurance, power performance and rate of fatigue in active college-aged men....

Examination of a pre-exercise, high energy supplement on exercise performance (2009)

Hoffman, Jay R, Kang, Jie, Ratamess, Nicholas A, Hoffman, Mattan W, Tranchina, Christopher P, Faigenbaum, Avery D

Abstract Background The purpose of this study was to examine the effect of a pre-exercise high energy drink on reaction time and anaerobic power in competitive strength/power athletes. In addition,...

Thermogenic effect of an acute ingestion of a weight loss supplement (2009)

Hoffman, Jay R, Kang, Jie, Ratamess, Nicholas A, Rashti, Stefanie L, Tranchina, Christopher P, Faigenbaum, Avery D

Abstract Background The purpose of this study was to examine the acute effects of a weight loss supplement on resting oxygen uptake (VO 2 ), respiratory quotient (RQ), caloric expenditure (kcal),...

EFFECTS OF PROTEIN SUPPLEMENTATION ON MUSCULAR PERFORMANCE AND RESTING HORMONAL CHANGES IN COLLEGE FOOTBALL PLAYERS (2007)

Jay R. Hoffman, Nicholas A. Ratamess, Jie Kang, Michael J. Falvo, Avery D. Faigenbaum

The effect of protein supplementation on athletic performance and hormonal changes was examined in 21 experienced collegiate strength/power athletes participating in a 12-week resistance training...

EFFECTS OF MAXIMAL SQUAT EXERCISE TESTING ON VERTICAL JUMP PERFORMANCE IN AMERICAN COLLEGE FOOTBALL PLAYERS (2007)

Jay R. Hoffman, Nicholas A. Ratamess, Avery D. Faigenbaum, Gerald T. Mangine, Jie Kang

Maximal strength and power testing are common assessments that are used to evaluate strength/power athletes. The validity and reliability of these tests have been well established (Hoffman, 2006),...

EFFECTS OF A SHORT-TERM PLYOMETRIC AND RESISTANCE TRAINING PROGRAM ON FITNESS PERFORMANCE IN BOYS AGE 12 TO 15 YEARS (2007)

Avery D. Faigenbaum, James E. McFarland, Fred B. Keiper, William Tevlin, Nicholas A. Ratamess, Jie Kang, ...

The purpose of this study was to compare the effects of a six week training period of combined plyometric and resistance training (PRT, n = 13) or resistance training alone (RT, n = 14) on fitness...

Effect of Protein Intake on Strength, Body Composition and Endocrine Changes in Strength/Power Athletes (2006)

Hoffman, Jay R, Ratamess, Nicholas A, Kang, Jie, Falvo, Michael J, Faigenbaum, Avery D

Abstract Comparison of protein intakes on strength, body composition and hormonal changes were examined in 23 experienced collegiate strength/power athletes participating in a 12-week resistance...

Thermogenic Effect from Nutritionally Enriched Coffee Consumption (2006)

Hoffman, Jay R, Kang, Jie, Ratamess, Nicholas A, Jennings, Peter F, Mangine, Gerald, Faigenbaum, Avery D

Abstract Background The purpose of this study was to examine the effect of nutritionally enriched JavaFit™ (JF) coffee (450 mg of caffeine, 1200 mg of garcinia cambogia, 360 mg of citrus aurantium...

MEDICAL ISSUES ASSOCIATED WITH ANABOLIC STEROID USE: ARE THEY EXAGGERATED? (2006)

Jay R. Hoffman, Nicholas A. Ratamess

For the past 50 years anabolic steroids have been at the forefront of the controversy surrounding performance enhancing drugs. For almost half of this time no attempt was made by sports governing...

PROTEIN - WHICH IS BEST? (2004)

Jay R. Hoffman, Michael J. Falvo

Protein intake that exceeds the recommended daily allowance is widely accepted for both endurance and power athletes. However, considering the variety of proteins that are available much less is...

Dynamic Warm-Up Protocols, With and Without a Weighted Vest, and Fitness Performance in High School Female Athletes

Faigenbaum, Avery D, McFarland, James E, Schwerdtman, Jeff A, Ratamess, Nicholas A, Kang, Jie, Hoffman, Jay R

Context: Recent authors have not found substantial evidence to support the use of static stretching for improving performance, so interest in dynamic warm-up procedures has risen. Our findings may...

Effect of Protein Intake on Strength, Body Composition and Endocrine Changes in Strength/Power Athletes

Hoffman, Jay R, Ratamess, Nicholas A, Kang, Jie, Falvo, Michael J, Faigenbaum, Avery D

Comparison of protein intakes on strength, body composition and hormonal changes were examined in 23 experienced collegiate strength/power athletes participating in a 12-week resistance training...