Jay R Hoffman

Summary

Affiliation: University of Central Florida
Country: USA

Publications

  1. pmc The effects of acute and prolonged CRAM supplementation on reaction time and subjective measures of focus and alertness in healthy college students
    Jay R Hoffman
    The University of Central Florida, Orlando, FL 32816 1250, USA
    J Int Soc Sports Nutr 7:39. 2010
  2. doi request reprint Performance changes during a college playing career in NCAA division III football athletes
    Jay R Hoffman
    Department of Exercise Science, University of Central Florida, Orlando, Florida, USA
    J Strength Cond Res 25:2351-7. 2011
  3. doi request reprint Effect of 15 days of betaine ingestion on concentric and eccentric force outputs during isokinetic exercise
    Jay R Hoffman
    Sport and Exercise Science, The University of Central Florida, Orlando, Florida, USA
    J Strength Cond Res 25:2235-41. 2011
  4. doi request reprint Effects of β-hydroxy-β-methylbutyrate free acid and cold water immersion on expression of CR3 and MIP-1β following resistance exercise
    Adam M Gonzalez
    Institute of Exercise Physiology and Wellness, Sport and Exercise Science, University of Central Florida, Orlando, Florida
    Am J Physiol Regul Integr Comp Physiol 306:R483-9. 2014
  5. doi request reprint Oral nutritional supplement fortified with beta-alanine improves physical working capacity in older adults: a randomized, placebo-controlled study
    William P McCormack
    Institute of Exercise Physiology and Wellness, University of Central Florida, Orlando, FL 32816, USA
    Exp Gerontol 48:933-9. 2013
  6. doi request reprint Phosphatidylserine and caffeine attenuate postexercise mood disturbance and perception of fatigue in humans
    Adam J Wells
    Institute of Exercise Science and Wellness, University of Central Florida, Orlando, FL 32816, USA
    Nutr Res 33:464-72. 2013
  7. doi request reprint β-Hydroxy-β-methylbutyrate (HMB)-free acid attenuates circulating TNF-α and TNFR1 expression postresistance exercise
    Jeremy R Townsend
    Institute of Exercise Science and Wellness, Sport and Exercise Science, University of Central Florida, Orlando, Florida
    J Appl Physiol (1985) 115:1173-82. 2013
  8. doi request reprint Visual tracking speed is related to basketball-specific measures of performance in NBA players
    Gerald T Mangine
    1Sport and Exercise Science, Institute of Exercise Physiology and Wellness, University of Central Florida, Orlando, Florida and 2Strength and Conditioning, Orlando Magic Basketball Club, Orlando, Florida
    J Strength Cond Res 28:2406-14. 2014
  9. doi request reprint Physical working capacity at fatigue threshold (PWCFT) is associated with sarcopenia-related body composition and measures of functionality in older adults
    Nadia S Emerson
    Institute of Exercise Physiology and Wellness, University of Central Florida, 4000 Central Florida Blvd, Orlando, FL 32816, United States
    Arch Gerontol Geriatr 59:300-4. 2014
  10. doi request reprint Speed, force, and power values produced from nonmotorized treadmill test are related to sprinting performance
    Gerald T Mangine
    Institute of Exercise Physiology and Wellness, Sport and Exercise Science, University of Central Florida, Orlando, Florida
    J Strength Cond Res 28:1812-9. 2014

Collaborators

Detail Information

Publications38

  1. pmc The effects of acute and prolonged CRAM supplementation on reaction time and subjective measures of focus and alertness in healthy college students
    Jay R Hoffman
    The University of Central Florida, Orlando, FL 32816 1250, USA
    J Int Soc Sports Nutr 7:39. 2010
    ..The purpose of this study was to examine the effect of acute and prolonged (4-weeks) ingestion of a supplement designed to improve reaction time and subjective measures of alertness, energy, fatigue, and focus compared to placebo...
  2. doi request reprint Performance changes during a college playing career in NCAA division III football athletes
    Jay R Hoffman
    Department of Exercise Science, University of Central Florida, Orlando, Florida, USA
    J Strength Cond Res 25:2351-7. 2011
    ..Strength and power performance improvements appear to occur throughout the football playing career of NCAA Division III athletes. However, the ability to significantly improve speed and agility may be limited...
  3. doi request reprint Effect of 15 days of betaine ingestion on concentric and eccentric force outputs during isokinetic exercise
    Jay R Hoffman
    Sport and Exercise Science, The University of Central Florida, Orlando, Florida, USA
    J Strength Cond Res 25:2235-41. 2011
    ..In conclusion, 15 days of betaine supplementation did not increase peak CON or ECC force outputs during an isokinetic chest press but did appear to reduce subjective measures of fatigue to the exercise protocol...
  4. doi request reprint Effects of β-hydroxy-β-methylbutyrate free acid and cold water immersion on expression of CR3 and MIP-1β following resistance exercise
    Adam M Gonzalez
    Institute of Exercise Physiology and Wellness, Sport and Exercise Science, University of Central Florida, Orlando, Florida
    Am J Physiol Regul Integr Comp Physiol 306:R483-9. 2014
    ..Although the time course that inflammatory responses are most beneficial remains to be determined, recovery modalities may alter immune cell mobilization and adhesion mechanisms during tissue recovery. ..
  5. doi request reprint Oral nutritional supplement fortified with beta-alanine improves physical working capacity in older adults: a randomized, placebo-controlled study
    William P McCormack
    Institute of Exercise Physiology and Wellness, University of Central Florida, Orlando, FL 32816, USA
    Exp Gerontol 48:933-9. 2013
    ..These findings could have importance in the perception of frailty, and the maintenance of health and independent living in older adults...
  6. doi request reprint Phosphatidylserine and caffeine attenuate postexercise mood disturbance and perception of fatigue in humans
    Adam J Wells
    Institute of Exercise Science and Wellness, University of Central Florida, Orlando, FL 32816, USA
    Nutr Res 33:464-72. 2013
    ..Ingestion of SUP for 14 days appears to attenuate postexercise MD scores and perception of fatigue, but does not affect CF or RT, in recreationally trained individuals...
  7. doi request reprint β-Hydroxy-β-methylbutyrate (HMB)-free acid attenuates circulating TNF-α and TNFR1 expression postresistance exercise
    Jeremy R Townsend
    Institute of Exercise Science and Wellness, Sport and Exercise Science, University of Central Florida, Orlando, Florida
    J Appl Physiol (1985) 115:1173-82. 2013
    ..HMB-FA supplementation may attenuate the initial immune response to intense exercise, which may reduce recovery time following intense exercise. ..
  8. doi request reprint Visual tracking speed is related to basketball-specific measures of performance in NBA players
    Gerald T Mangine
    1Sport and Exercise Science, Institute of Exercise Physiology and Wellness, University of Central Florida, Orlando, Florida and 2Strength and Conditioning, Orlando Magic Basketball Club, Orlando, Florida
    J Strength Cond Res 28:2406-14. 2014
    ..In conclusion, VTS seems to be related to a basketball player's ability to see and respond to various stimuli on the basketball court that results in more positive plays as reflected by greater number of AST and STL and lower turnovers...
  9. doi request reprint Physical working capacity at fatigue threshold (PWCFT) is associated with sarcopenia-related body composition and measures of functionality in older adults
    Nadia S Emerson
    Institute of Exercise Physiology and Wellness, University of Central Florida, 4000 Central Florida Blvd, Orlando, FL 32816, United States
    Arch Gerontol Geriatr 59:300-4. 2014
    ..5 repetitions) showed discriminative ability with regard to sarcopenia risk. The current data suggest that the neuromuscular fatigue threshold, as measured by PWCFT, is related to measures of body composition and function in older adults...
  10. doi request reprint Speed, force, and power values produced from nonmotorized treadmill test are related to sprinting performance
    Gerald T Mangine
    Institute of Exercise Physiology and Wellness, Sport and Exercise Science, University of Central Florida, Orlando, Florida
    J Strength Cond Res 28:1812-9. 2014
    ..It, therefore, may be used to obtain movement-specific measures of sprinting force, velocity, and power in a controlled environment from a single 30-second maximal sprinting test...
  11. doi request reprint Performance and muscle architecture comparisons between starters and nonstarters in National Collegiate Athletic Association Division I women's soccer
    Adam R Jajtner
    Sport and Exercise Science, Institute of Exercise Science and Wellness, University of Central Florida, Orlando, Florida, USA
    J Strength Cond Res 27:2355-65. 2013
    ..Three-dimensional multiple object tracking and RT improve regardless of playing time. Changes in MA indicate that practices alone provide sufficient stimulus for improving muscle quality during the competitive season...
  12. doi request reprint Resistance exercise may improve spatial awareness and visual reaction in older adults
    Maren S Fragala
    Institute of Exercise Physiology and Wellness, University of Central Florida, Orlando, Florida
    J Strength Cond Res 28:2079-87. 2014
    ..6, and 14.0%, respectively. Circulating BDNF and motor reaction time displayed no apparent meaningful changes. Thus, resistance exercise training may be an effective means to preserve or improve spatial awareness and reaction with aging...
  13. doi request reprint Vastus lateralis exhibits non-homogenous adaptation to resistance training
    Adam J Wells
    Institute of Exercise Physiology and Wellness, University of Central Florida UCF, 4000 Central Florida Blvd, Orlando, Florida, 32816, USA
    Muscle Nerve 50:785-93. 2014
    ..The purpose of this study was to compare changes in muscle architecture at 2 commonly used points of measure (VL0 and VL5)...
  14. doi request reprint C-terminal agrin fragment is inversely related to neuromuscular fatigue in older men
    Jeffrey R Stout
    College of Education and Human Performance, Institute of Exercise Physiology and Wellness, University of Central Florida, 12494 University Boulevard, Orlando, Florida, 32816, USA
    Muscle Nerve 51:132-3. 2015
    ..The aim of this study was to examine the relationship between serum C-terminal agrin fragment (CAF) concentrations and neuromuscular fatigue in older adults...
  15. doi request reprint Leukocyte IGF-1 receptor expression during muscle recovery
    Maren S Fragala
    Department of Educational and Human Sciences, Institute of Exercise Physiology and Wellness, Sport and Exercise Science, University of Central Florida, Orlando, FL
    Med Sci Sports Exerc 47:92-9. 2015
    ....
  16. doi request reprint Effects of β-hydroxy-β-methylbutyrate free acid and cold water immersion on post-exercise markers of muscle damage
    Adam M Gonzalez
    Institute of Exercise Physiology and Wellness, Sport and Exercise Science, University of Central Florida, Orlando, FL, 32816, USA
    Amino Acids 46:1501-11. 2014
    ..Nevertheless, HMB-FA or CWI treatments did not appear to provide benefit over PL for recovery. Instead, the combination of CWI and HMB-FA improved performance recovery compared to other groups...
  17. doi request reprint Muscle quality index improves with resistance exercise training in older adults
    Maren S Fragala
    Institute of Exercise Physiology and Wellness, University of Central Florida, Orlando, FL, USA Electronic address
    Exp Gerontol 53:1-6. 2014
    ....
  18. ncbi request reprint Predictors of fielding performance in professional baseball players
    Gerald T Mangine
    Inst of Exercise Physiology and Wellness, University of Central Florida, Orlando, FL, USA
    Int J Sports Physiol Perform 8:510-6. 2013
    ..Spring-training anthropometric and performance measures have been previously related to hitting performance; however, their relationships with fielding performance measures are unknown...
  19. pmc Efficacy of phosphatidic acid ingestion on lean body mass, muscle thickness and strength gains in resistance-trained men
    Jay R Hoffman
    Human Performance Laboratory, University of Central Florida, Orlando, 32186, FL, USA
    J Int Soc Sports Nutr 9:47. 2012
    ..abstract:..
  20. pmc Bilateral differences in muscle architecture and increased rate of injury in national basketball association players
    Gerald T Mangine
    Institute of Exercise Physiology and Wellness, Sport and Exercise, University of Central Florida, Orlando
    J Athl Train 49:794-9. 2014
    ..Professional basketball players have demanding schedules that, in combination with certain underlying physical characteristics and side-to-side strength and power imbalances, may make them vulnerable to lower extremity injuries...
  21. pmc Mediators of monocyte migration in response to recovery modalities following resistance exercise
    Adam R Jajtner
    Institute of Exercise Physiology and Wellness, University of Central Florida, Orlando, FL, USA
    Mediators Inflamm 2014:145817. 2014
    ..The increased expression of CR3 and increased proportion of CR3+ monocytes following CWI at 24 H indicate a potentially improved ability for monocyte adhesion to the endothelium, possibly improving phagocytosis of damaged tissues...
  22. pmc The effect of a dietary supplement (N-oleyl-phosphatidyl-ethanolamine and epigallocatechin gallate) on dietary compliance and body fat loss in adults who are overweight: a double-blind, randomized control trial
    Gerald T Mangine
    Sport and Exercise Science, University of Central Florida, 4000 Central Florida Blvd, Orlando, FL 32816, USA
    Lipids Health Dis 11:127. 2012
    ..An additional purpose was to examine the effect of this supplement/diet/exercise paradigm on changes in body composition, sensation of appetite, mood and severity of binge eating...
  23. doi request reprint Predictors of high-intensity running capacity in collegiate women during a soccer game
    William P McCormack
    Department of Educational and Human Sciences, Institute of Exercise Physiology and Wellness, University of Central Florida, Orlando, Florida
    J Strength Cond Res 28:964-70. 2014
    ..801; p = 0.01). Results of this study indicate that V[Combining Dot Above]O2max and muscle architecture are important characteristics of NCAA Division I women soccer players and may predict HIR distance during a competitive contest...
  24. doi request reprint Performance changes in NBA basketball players vary in starters vs. nonstarters over a competitive season
    Adam M Gonzalez
    Sport and Exercise Science, University of Central Florida, Orlando, Florida, USA
    J Strength Cond Res 27:611-5. 2013
    ..Results of this study suggest that NBA players may enhance lower-body power, repetitive jump ability, and reaction during a competitive season, which appear to be enhanced with the stimulus of playing time...
  25. doi request reprint β-Hydroxy-β-methylbutyrate (HMB) supplementation and resistance exercise significantly reduce abdominal adiposity in healthy elderly men
    Jeffrey R Stout
    Institute of Exercise Physiology and Wellness, University of Central Florida, Orlando, FL, United States Electronic address
    Exp Gerontol 64:33-4. 2015
    ..013), NT-HMB (p=0.011), and RT-PL (p=0.010). These data suggested that HMB in combination with 12weeks of RT decreased AFM in elderly men. ..
  26. doi request reprint Muscle architecture and strength: adaptations to short-term resistance training in older adults
    Tyler C Scanlon
    Institute of Exercise Physiology and Wellness, University of Central Florida, 4000 Central Florida Boulevard, Orlando, Florida, 32816, USA
    Muscle Nerve 49:584-92. 2014
    ..Muscle morphology and architecture changes in response to 6 weeks of progressive resistance training were examined in healthy older adults...
  27. ncbi request reprint Predictors of fielding performance in professional baseball players
    Gerald T Mangine
    the Inst of Exercise Physiology and Wellness, University of Central Florida, Orlando, FL
    Int J Sports Physiol Perform 8:510-6. 2013
    ..514, SEE = 8.850, P = .042). Conclusions: Spring-training measurements of VJMP and proagility time may predict the defensive run value of a player over the course of a professional baseball season. ..
  28. doi request reprint Performance changes in National Collegiate Athletic Association Division I women basketball players during a competitive season: starters vs. nonstarters
    Adam M Gonzalez
    Sport and Exercise Science, University of Central Florida, Orlando, Florida, USA
    J Strength Cond Res 26:3197-203. 2012
    ..In this study, the monitoring of sport-specific performance changes pre and post season showed that performance measures can be maintained throughout an National Collegiate Athletic Association Division I women basketball season...
  29. doi request reprint Effect of age on anthropometric and physical performance measures in professional baseball players
    Gerald T Mangine
    Sport and Exercise Science, University of Central Florida, Orlando, Florida, USA
    J Strength Cond Res 27:375-81. 2013
    ..Age-related differences observed in this study suggest that athletes focus on their strength and conditioning programs to extend the length of their professional careers...
  30. doi request reprint Effect of calcium β-hydroxy-β-methylbutyrate (CaHMB) with and without resistance training in men and women 65+yrs: a randomized, double-blind pilot trial
    Jeffrey R Stout
    Institute for Exercise Physiology and Wellness Research, University of Central Florida, Orlando, FL, USA Electronic address
    Exp Gerontol 48:1303-10. 2013
    ..The purpose of this study was to evaluate the effects of 24 weeks of CaHMB supplementation and resistance training (3 d wk(-1)) or CaHMB supplementation only in ≥65 yr old adults...
  31. pmc β-Alanine ingestion increases muscle carnosine content and combat specific performance in soldiers
    Jay R Hoffman
    Institute of Exercise Physiology and Wellness, Sport and Exercise Science, University of Central Florida, Orlando, FL, 32816, USA
    Amino Acids 47:627-36. 2015
    ....
  32. doi request reprint Acute effect of intensity fluctuation on energy output and substrate utilization
    Jie Kang
    1Department of Health and Exercise Science, The College of New Jersey, Ewing, New Jersey and 2Department of Education and Human Sciences, University of Central Florida, Orlando, Florida
    J Strength Cond Res 28:2136-44. 2014
    ..e., P2 and P3) are equally effective in augmenting postexercise V[Combining Dot Above]O2, but the protocol with a greater magnitude of fluctuation also elicits greater COX coupled with reduced FOX during exercise...
  33. doi request reprint The effects of rest interval length manipulation of the first upper-body resistance exercise in sequence on acute performance of subsequent exercises in men and women
    Nicholas A Ratamess
    Department of Health and Exercise Science, The College of New Jersey, Ewing, New Jersey, USA
    J Strength Cond Res 26:2929-38. 2012
    ..All RIs led to comparable levels of fatigue in men, indicating that reductions in load are necessary for subsequent exercises performed in sequence that stress similar agonist muscle groups when 10 repetitions are desired...
  34. doi request reprint The effects of rest interval length on acute bench press performance: the influence of gender and muscle strength
    Nicholas A Ratamess
    Department of Health and Exercise Science, The College of New Jersey, Ewing, New Jersey, USA
    J Strength Cond Res 26:1817-26. 2012
    ..558 and -0.490, respectively). These data indicate that maximal strength plays a role in bench press performance with varying RIs and suggest that shorter RIs may suffice in women to attain a specific volume...
  35. doi request reprint National collegiate athletic association strength and conditioning coaches' knowledge and practices regarding prevention and recognition of exertional heat stroke
    Anna S Valdes
    Institute of Exercise Physiology and Wellness, Sport and Exercise Science Program, University of Central Florida, Orlando, Florida
    J Strength Cond Res 28:3013-23. 2014
    ..It is recommended that consideration be given to include EHS prevention and recognition competencies as part of the professional preparation and certification requirements for SCCs. ..
  36. doi request reprint A comparison of traditional and block periodized strength training programs in trained athletes
    Sandro Bartolomei
    1School of Pharmacy, Biotechnology and Motor Science, University of Bologna, Bologna, Italy and 2Sport and Exercise Science, University of Central Florida, Orlando, Florida
    J Strength Cond Res 28:990-7. 2014
    ..Results of this study indicate that BP may enhance upper-body power expression to a greater extent than TP with equal volume; however, no differences were detected for lower-body performance and body composition measures...
  37. doi request reprint β-Alanine supplementation
    Jay R Hoffman
    Sport and Exercise Science, University of Central Florida, Orlando, FL 32816 1250, USA
    Curr Sports Med Rep 11:189-95. 2012
    ..Discussion will examine the potential adverse effects associated with this supplement as well as the added benefits of combining β-alanine with creatine...
  38. pmc L-alanyl-L-glutamine ingestion maintains performance during a competitive basketball game
    Jay R Hoffman
    Sport and Exercise Science, University of Central Florida, 4000 Central Florida Blvd, Orlando, Florida 32816, USA
    J Int Soc Sports Nutr 9:4. 2012
    ..abstract:..