T W Beck

Summary

Affiliation: University of Nebraska
Country: USA

Publications

  1. ncbi The effect of the estimated innervation zone on EMG amplitude and center frequency
    Travis W Beck
    Human Performance Laboratory, Department of Nutrition and Health Sciences, University of Nebraska Lincoln, Lincoln, NE 68583 0806, USA
    Med Sci Sports Exerc 39:1282-90. 2007
  2. ncbi Effects of two days of isokinetic training on strength and electromyographic amplitude in the agonist and antagonist muscles
    Travis W Beck
    Department of Nutrition and Health Sciences, Human Performance Laboratory, University of Nebraska Lincoln, Lincoln, Nebraska 68583, USA
    J Strength Cond Res 21:757-62. 2007
  3. ncbi Mechanomyographic amplitude and frequency responses during dynamic muscle actions: a comprehensive review
    Travis W Beck
    Department of Nutrition and Health Sciences, University of Nebraska Lincoln, NE 68583, USA
    Biomed Eng Online 4:67. 2005
  4. ncbi Electromyographic instantaneous amplitude and instantaneous mean power frequency patterns across a range of motion during a concentric isokinetic muscle action of the biceps brachii
    Travis W Beck
    Department of Nutrition and Health Sciences, Human Performance Laboratory, University of Nebraska Lincoln, Lincoln, NE 68583 0806, USA
    J Electromyogr Kinesiol 16:531-9. 2006
  5. ncbi Electrode shift and normalization reduce the innervation zone's influence on EMG
    Travis W Beck
    Biophysics Laboratory, Department of Health and Exercise Science, University of Oklahoma, Norman, OK 73019 6081, USA
    Med Sci Sports Exerc 40:1314-22. 2008
  6. ncbi Does the frequency content of the surface mechanomyographic signal reflect motor unit firing rates? A brief review
    Travis W Beck
    Department of Nutrition and Health Sciences, Human Performance Laboratory, University of Nebraska Lincoln, 104K Ruth Leverton Hall, Lincoln, NE 68583 0806, United States
    J Electromyogr Kinesiol 17:1-13. 2007
  7. ncbi Mechanomyographic and electromyographic responses during submaximal to maximal eccentric isokinetic muscle actions of the biceps brachii
    Travis W Beck
    Department of Nutrition and Health Sciences, Human Performance Laboratory, University of Nebraska Lincoln, 68588, USA
    J Strength Cond Res 20:184-91. 2006
  8. ncbi An examination of the Runs Test, Reverse Arrangements Test, and modified Reverse Arrangements Test for assessing surface EMG signal stationarity
    Travis W Beck
    Department of Nutrition and Health Sciences, Human Performance Laboratory, University of Nebraska Lincoln, Lincoln, NE 68583 0806, USA
    J Neurosci Methods 156:242-8. 2006
  9. ncbi The effects of interelectrode distance over the innervation zone and normalization on the electromyographic amplitude and mean power frequency versus concentric, eccentric, and isometric torque relationships for the vastus lateralis muscle
    Travis W Beck
    Department of Nutrition and Health Sciences, Human Performance Laboratory, University of Nebraska Lincoln, Lincoln, NE 68583, United States
    J Electromyogr Kinesiol 19:219-31. 2009
  10. ncbi The acute effects of a caffeine-containing supplement on strength, muscular endurance, and anaerobic capabilities
    Travis W Beck
    Department of Nutrition and Health Sciences, Human Performance Laboratory, University of Nebraska Lincoln, Lincoln, NE 68588, USA
    J Strength Cond Res 20:506-10. 2006

Detail Information

Publications84

  1. ncbi The effect of the estimated innervation zone on EMG amplitude and center frequency
    Travis W Beck
    Human Performance Laboratory, Department of Nutrition and Health Sciences, University of Nebraska Lincoln, Lincoln, NE 68583 0806, USA
    Med Sci Sports Exerc 39:1282-90. 2007
    ....
  2. ncbi Effects of two days of isokinetic training on strength and electromyographic amplitude in the agonist and antagonist muscles
    Travis W Beck
    Department of Nutrition and Health Sciences, Human Performance Laboratory, University of Nebraska Lincoln, Lincoln, Nebraska 68583, USA
    J Strength Cond Res 21:757-62. 2007
    ..These results may have implications for the number of visits that are required for rehabilitation after injury, surgery, or both...
  3. ncbi Mechanomyographic amplitude and frequency responses during dynamic muscle actions: a comprehensive review
    Travis W Beck
    Department of Nutrition and Health Sciences, University of Nebraska Lincoln, NE 68583, USA
    Biomed Eng Online 4:67. 2005
    ..Thus, it is important to investigate the unique applications of MMG amplitude and frequency responses with different experimental designs/methodologies to continually reassess the uses/limitations of MMG...
  4. ncbi Electromyographic instantaneous amplitude and instantaneous mean power frequency patterns across a range of motion during a concentric isokinetic muscle action of the biceps brachii
    Travis W Beck
    Department of Nutrition and Health Sciences, Human Performance Laboratory, University of Nebraska Lincoln, Lincoln, NE 68583 0806, USA
    J Electromyogr Kinesiol 16:531-9. 2006
    ....
  5. ncbi Electrode shift and normalization reduce the innervation zone's influence on EMG
    Travis W Beck
    Biophysics Laboratory, Department of Health and Exercise Science, University of Oklahoma, Norman, OK 73019 6081, USA
    Med Sci Sports Exerc 40:1314-22. 2008
    ....
  6. ncbi Does the frequency content of the surface mechanomyographic signal reflect motor unit firing rates? A brief review
    Travis W Beck
    Department of Nutrition and Health Sciences, Human Performance Laboratory, University of Nebraska Lincoln, 104K Ruth Leverton Hall, Lincoln, NE 68583 0806, United States
    J Electromyogr Kinesiol 17:1-13. 2007
    ..It is likely, however, that this information is qualitative, rather than quantitative in nature, and reflects the global motor unit firing rate, rather than the firing rates of a particular group of motor units...
  7. ncbi Mechanomyographic and electromyographic responses during submaximal to maximal eccentric isokinetic muscle actions of the biceps brachii
    Travis W Beck
    Department of Nutrition and Health Sciences, Human Performance Laboratory, University of Nebraska Lincoln, 68588, USA
    J Strength Cond Res 20:184-91. 2006
    ..These findings contribute to current knowledge of motor-control strategies during eccentric isokinetic muscle actions and could be useful in the design of training programs...
  8. ncbi An examination of the Runs Test, Reverse Arrangements Test, and modified Reverse Arrangements Test for assessing surface EMG signal stationarity
    Travis W Beck
    Department of Nutrition and Health Sciences, Human Performance Laboratory, University of Nebraska Lincoln, Lincoln, NE 68583 0806, USA
    J Neurosci Methods 156:242-8. 2006
    ..Thus, the Runs Test, Reverse Arrangements Test, and modified Reverse Arrangements Test may not be appropriate for assessing stationarity in surface EMG signals...
  9. ncbi The effects of interelectrode distance over the innervation zone and normalization on the electromyographic amplitude and mean power frequency versus concentric, eccentric, and isometric torque relationships for the vastus lateralis muscle
    Travis W Beck
    Department of Nutrition and Health Sciences, Human Performance Laboratory, University of Nebraska Lincoln, Lincoln, NE 68583, United States
    J Electromyogr Kinesiol 19:219-31. 2009
    ..Thus, it may be possible to reduce the potential influence of the IZ on amplitude and spectral parameters of the EMG signal through normalization...
  10. ncbi The acute effects of a caffeine-containing supplement on strength, muscular endurance, and anaerobic capabilities
    Travis W Beck
    Department of Nutrition and Health Sciences, Human Performance Laboratory, University of Nebraska Lincoln, Lincoln, NE 68588, USA
    J Strength Cond Res 20:506-10. 2006
    ..Thus, the caffeine-containing supplement may be an effective supplement for increasing upper-body strength and, therefore, could be useful for competitive and recreational athletes who perform resistance training...
  11. ncbi The effects of electrode placement and innervation zone location on the electromyographic amplitude and mean power frequency versus isometric torque relationships for the vastus lateralis muscle
    Travis W Beck
    Department of Nutrition and Health Sciences, Human Performance Laboratory, 104K Ruth Leverton Hall, University of Nebraska Lincoln, Lincoln, NE 68583, USA
    J Electromyogr Kinesiol 18:317-28. 2008
    ..In addition, absolute and relative (to femur length) estimates of IZ location for the VL resulted in similar inter-subject variability...
  12. ncbi A comparison of monopolar and bipolar recording techniques for examining the patterns of responses for electromyographic amplitude and mean power frequency versus isometric torque for the vastus lateralis muscle
    Travis W Beck
    Department of Nutrition and Health Sciences, Human Performance Laboratory, University of Nebraska Lincoln, Lincoln, NE 68588 0229, USA
    J Neurosci Methods 166:159-67. 2007
    ....
  13. ncbi The influence of muscle fiber type composition on the patterns of responses for electromyographic and mechanomyographic amplitude and mean power frequency during a fatiguing submaximal isometric muscle action
    T W Beck
    Department of Nutrition and Health Sciences, Human Performance Laboratory University of Nebraska Lincoln Lincoln, Nebraska 68583 0806, USA
    Electromyogr Clin Neurophysiol 47:221-32. 2007
    ..These findings suggested that unlike surface EMG, MMG may be a useful noninvasive technique for examining fatigue-related differences in muscle fiber type composition...
  14. ncbi The influence of electrode placement over the innervation zone on electromyographic amplitude and mean power frequency versus isokinetic torque relationships
    Travis W Beck
    Department of Nutrition and Health Sciences, Human Performance Laboratory, University of Nebraska Lincoln, Lincoln, NE 68588 0229, USA
    J Neurosci Methods 162:72-83. 2007
    ....
  15. ncbi Effects of a protease supplement on eccentric exercise-induced markers of delayed-onset muscle soreness and muscle damage
    Travis W Beck
    Department of Nutrition and Health Sciences, Human Performance Laboratory University of Nebraska Lincoln, Lincoln, Nebraska 68583, USA
    J Strength Cond Res 21:661-7. 2007
    ..The protease supplement had no effect, however, on the perception of pain associated with DOMS or the blood markers of muscle damage...
  16. ncbi Comparison of a piezoelectric contact sensor and an accelerometer for examining mechanomyographic amplitude and mean power frequency versus torque relationships during isokinetic and isometric muscle actions of the biceps brachii
    Travis W Beck
    Department of Nutrition and Health Sciences, Human Performance Laboratory, Center for Youth Fitness and Sports Research, University of Nebraska Lincoln, Lincoln, NE 68588 0229, USA
    J Electromyogr Kinesiol 16:324-35. 2006
    ....
  17. ncbi The effects of the innervation zone and interelectrode distance on the patterns of responses for electromyographic amplitude and mean power frequency versus isometric torque for the vastus lateralis muscle
    Travis W Beck
    Department of Nutrition and Health Sciences, Human Performance Laboratory, University of Nebraska Lincoln, Lincoln, NE 68583 0806, USA
    Electromyogr Clin Neurophysiol 48:13-25. 2008
    ..Thus, these findings supported normalization, and indicated that it is useful for reducing the influences of the IZ and differences in IED on absolute EMG amplitude and MPF data...
  18. ncbi The acute effects of a caffeine-containing supplement on bench press strength and time to running exhaustion
    Travis W Beck
    Department of Nutrition and Health Sciences, Human Performance Laboratory, University of Nebraska Lincoln, USA
    J Strength Cond Res 22:1654-8. 2008
    ..These findings do not, however, support the use of caffeine as an ergogenic aid in untrained to moderately trained individuals...
  19. ncbi Mechanomyographic amplitude and mean power frequency versus torque relationships during isokinetic and isometric muscle actions of the biceps brachii
    Travis W Beck
    Department of Nutrition and Health Sciences, Human Performance Laboratory, Center for Youth Fitness and Sports Research, University of Nebraska Lincoln, 110 Ruth Leverton Hall, Lincoln, NE 68583 0806, USA
    J Electromyogr Kinesiol 14:555-64. 2004
    ..These findings suggested that the time and frequency domains of the MMG signal may be useful for describing the unique motor control strategies that modulate dynamic versus isometric torque production...
  20. ncbi Effects of a drink containing creatine, amino acids, and protein combined with ten weeks of resistance training on body composition, strength, and anaerobic performance
    Travis W Beck
    Department of Nutrition and Health Sciences, University of Nebraska Lincoln, 68588, USA
    J Strength Cond Res 21:100-4. 2007
    ..The TEST drink was, however, more effective than carbohydrates alone for improving anaerobic power production...
  21. ncbi Mechanomyographic and electromyographic amplitude and frequency responses during fatiguing isokinetic muscle actions of the biceps brachii
    T W Beck
    Department of Nutrition and Health Sciences, Human Performance Laboratory, Center for Youth Fitness and Sports Research, University of Nebraska Lincoln, Lincoln, Nebraska 68588 0229, USA
    Electromyogr Clin Neurophysiol 44:431-41. 2004
    ..The factor(s) determining the decrease in EMG MPF are unclear, although a reduction in muscle fiber action potential conduction velocity may have been partially responsible...
  22. ncbi Mechanomyographic and electromyographic time and frequency domain responses during submaximal to maximal isokinetic muscle actions of the biceps brachii
    Travis W Beck
    Department of Nutrition and Health Sciences, Human Performance Laboratory, Center for Youth Fitness and Sports Research, University of Nebraska Lincoln, Lincoln, NE 68588 0229, USA
    Eur J Appl Physiol 92:352-9. 2004
    ..Furthermore, the results indicated that dynamic muscle actions can be used when applying techniques that require a linear EMG amplitude versus torque relationship...
  23. ncbi Comparison of Fourier and wavelet transform procedures for examining the mechanomyographic and electromyographic frequency domain responses during fatiguing isokinetic muscle actions of the biceps brachii
    Travis W Beck
    Department of Nutrition and Health Sciences, Human Performance Laboratory, Center for Youth Fitness and Sports Research, University of Nebraska Lincoln, 104K Ruth Leverton Hall, Lincoln, NE 68588 0229, USA
    J Electromyogr Kinesiol 15:190-9. 2005
    ....
  24. ncbi Comparison of Fourier and wavelet transform procedures for examining mechanomyographic and electromyographic frequency versus isokinetic torque relationships
    T W Beck
    Department of Nutrition and Health Sciences, Human Performance Laboratory, Center for Youth Fitness and Sports Research, University of Nebraska Lincoln, Lincoln, Nebraska 68588 0229, USA
    Electromyogr Clin Neurophysiol 45:93-103. 2005
    ..67-0.83) and EMG (R2 = 0.72-0.90). The similarities among the CF, MPF, and MDF patterns suggested that Fourier or wavelet transform procedures can be used to examine the patterns of MMG and EMG responses during dynamic muscle actions...
  25. ncbi The effects of interelectrode distance on electromyographic amplitude and mean power frequency during isokinetic and isometric muscle actions of the biceps brachii
    Travis W Beck
    Department of Nutrition and Health Sciences, Human Performance Laboratory, Center for Youth Fitness and Sports Research, University of Nebraska Lincoln, Lincoln, NE 68588 0229, USA
    J Electromyogr Kinesiol 15:482-95. 2005
    ..Thus, normalized EMG data can be compared among previous studies that have utilized different IED arrangements...
  26. ncbi Comparison of the fast Fourier transform and continuous wavelet transform for examining mechanomyographic frequency versus eccentric torque relationships
    Travis W Beck
    Department of Nutrition and Health Sciences, Human Performance Laboratory, 104K Ruth Leverton Hall, University of Nebraska at Lincoln, Lincoln, NE 68588 0229, USA
    J Neurosci Methods 150:59-66. 2006
    ..These results suggested that Fourier or wavelet transform procedures can be used to examine the patterns of MMG responses during eccentric muscle actions of the biceps brachii...
  27. ncbi The influence of myosin heavy chain isoform composition and training status on the patterns of responses for mechanomyographic amplitude versus isometric torque
    Travis W Beck
    Department of Nutrition and Health Sciences, Human Performance Laboratory, University of Nebraska, Lincoln, Nebraska, USA
    J Strength Cond Res 22:818-25. 2008
    ..Thus, differences in MHC isoform composition and training status did not explain the unique torque-related patterns for MMG amplitude...
  28. ncbi Wavelet-based analysis of surface mechanomyographic signals from subjects with differences in myosin heavy chain isoform content
    T W Beck
    Department of Health and Exercise Science, Biophysics Laboratory, University of Oklahoma, Norman, Oklahoma 73019 6081, USA
    Electromyogr Clin Neurophysiol 49:167-75. 2009
    ..It is possible that factors such as the thicknesses of the subcutaneous adipose tissue and/or iliotibial band reduced the potential influence of differences in % MHC isoform content on the MMG signal...
  29. ncbi Mechanomyographic time and frequency domain responses of the vastus medialis muscle during submaximal to maximal isometric and isokinetic muscle actions
    J W Coburn
    Department of Nutrition and Health Sciences, University of Nebraska Lincoln, Lincoln, NE 68583 0806, USA
    Electromyogr Clin Neurophysiol 44:247-55. 2004
    ..769) versus torque were linear. The different patterns for MMG amplitude and frequency may reflect differences in the motor control strategies that modulate torque production for isometric versus dynamic muscle actions...
  30. ncbi MMG-EMG cross spectrum and muscle fiber type
    T W Beck
    Department of Health and Exercise Science, University of Oklahoma, Huston Huffman Center, Norman, OK 73019 6081, United States
    Int J Sports Med 30:538-44. 2009
    ..Thus, the differences in fiber type characteristics were not manifested in the patterns of responses for MMG-EMG cross spectrum MPF...
  31. ncbi Effects of static stretching on the hamstrings-to-quadriceps ratio and electromyographic amplitude in men
    P B Costa
    Biophysics Laboratory, Department of Health and Exercise Science, University of Oklahoma, Norman, OK, USA
    J Sports Med Phys Fitness 49:401-9. 2009
    ....
  32. ncbi Reliability of absolute versus log-transformed regression models for examining the torque-related patterns of response for mechanomyographic amplitude
    Trent J Herda
    Department of Health and Exercise Science, University of Oklahoma, Norman, OK 73019 6081, USA
    J Neurosci Methods 179:240-6. 2009
    ..Thus, the log-transformed MMG(RMS) versus TQ relationships may offer an attractive alternative method for reliably quantifying and tracking changes in the TQ-related patterns of response for MMG(RMS) on a subject-by-subject basis...
  33. ncbi The effect of pedaling cadence and power output on mechanomyographic amplitude and mean power frequency during submaximal cycle ergometry
    C R Hendrix
    Department of Nutrition and Health Sciences, Human Performance Laboratory, University of Nebraska Lincoln, Lincoln, Nebraska 68583 0806, USA
    Electromyogr Clin Neurophysiol 48:195-201. 2008
    ..Furthermore, these findings suggested that power output was modulated by motor unit recruitment and not rate coding...
  34. ncbi An examination of innervation zone movement with increases in isometric torque production
    Jason M Defreitas
    Biophysics Laboratory, Department of Health and Exercise Science, University of Oklahoma, 1401 Asp Avenue, Norman, OK 73019, USA
    Clin Neurophysiol 119:2795-9. 2008
    ....
  35. ncbi Validity of electromyographic fatigue threshold as a noninvasive method for tracking changes in ventilatory threshold in college-aged men
    Kristina L Kendall
    Metabolic and Body Composition Lab, Department of Health and Exercise Science, Huston Huffman Center, University of Oklahoma, Norman, Oklahoma, USA
    J Strength Cond Res 24:109-13. 2010
    ..However, the use of EMG(FT) to predict VT does not seem to be valid for tracking changes after 6 weeks of HIIT. At this time, it is not recommended that EMG(FT) be used to predict and track changes in VT...
  36. ncbi Effects of creatine monohydrate and polyethylene glycosylated creatine supplementation on muscular strength, endurance, and power output
    Trent J Herda
    Department of Health and Exercise Science, University of Oklahoma, Norman, Oklahoma, USA
    J Strength Cond Res 23:818-26. 2009
    ..Thus, PEG creatine may have ergogenic effects that are comparable to those of CM, but with a smaller dose of creatine...
  37. ncbi The influence of electrode shift over the innervation zone and normalization on the electromyographic amplitude and mean power frequency versus isometric torque relationships for the vastus medialis muscle
    Travis W Beck
    Biophysics Laboratory, Department of Health and Exercise Science, University of Oklahoma, Norman, OK 73019, United States
    J Neurosci Methods 169:100-8. 2008
    ..Future studies should examine the potential for movement of the IZ during isometric muscle actions...
  38. ncbi Linearity and reliability of the mechanomyographic amplitude versus dynamic constant external resistance relationships for the biceps brachii
    M S Stock
    Department of Health and Exercise Science, University of Oklahoma, Norman, OK, USA
    Physiol Meas 31:1487-98. 2010
    ..512 (35.5%) for the eccentric muscle actions, indicating poor reliability. These findings demonstrated that the MMG amplitude versus concentric and eccentric DCER relationships were not consistently linear or reliable...
  39. ncbi Effects of stretching on peak torque and the H:Q ratio
    P B Costa
    Health and Exercise Science, University of Oklahoma, Norman, Oklahoma, United States
    Int J Sports Med 30:60-5. 2009
    ..47 +/- 0.04 and 0.44 +/- 0.03, respectively). Our findings suggested that despite the stretching-induced decreases in leg flexion PT, leg extension PT and the H : Q ratios were unaltered by the stretching...
  40. ncbi Inter-individual variability among the mechanomyographic and electromyographic amplitude and mean power frequency responses during isometric ramp muscle actions
    E D Ryan
    Department of Health and Exercise Science, Biophysics Laboratory, University of Oklahoma, Norman, OK 73019, USA
    Electromyogr Clin Neurophysiol 47:161-73. 2007
    ..isometric torque relationships should be examined on a subject-by-subject and muscle-by-muscle basis during isometric ramp muscle actions...
  41. ncbi Reliability of mechanomyographic amplitude and mean power frequency during isometric step and ramp muscle actions
    Trent J Herda
    Department of Health and Exercise Science, University of Oklahoma, Norman, OK 73019 6081, USA
    J Neurosci Methods 171:104-9. 2008
    ..36 to 0.80, while the SEM (% of mean) ranged from 14.9 to 33.9% and 6.9 to18.9% for MMG RMS and MMG MPF, respectively. Thus, MMG RMS and MMG MPF demonstrated reliability that was comparable to that of the surface electromyographic signal...
  42. ncbi An examination of the relationships among myosin heavy chain isoform content, isometric strength, and mechanomyographic median frequency
    Travis W Beck
    Department of Health and Exercise Science, Biophysics Laboratory, University of Oklahoma, Norman, Oklahoma, USA
    J Strength Cond Res 23:2683-8. 2009
    ..4%. These findings indicated that a simple, time-efficient, and noninvasive test that simultaneously measures isometric strength and MMG MDF could be useful for estimating the % MHC Type II isoform content in well-trained men...
  43. ncbi Gender comparisons of mechanomyographic amplitude and mean power frequency versus isometric torque relationships
    Travis W Beck
    Dept. of Nutrition and Health Sciences, University of Nebraska- Lincoln, 68588, USA
    J Appl Biomech 21:96-109. 2005
    ....
  44. ncbi Linearity and reliability of the EMG amplitude versus dynamic torque relationships for the superficial quadriceps femoris muscles
    M S Stock
    Department of Health and Exercise Science, University of Oklahoma, Norman, OK 73019, USA
    Electromyogr Clin Neurophysiol 50:97-106. 2010
    ....
  45. ncbi Cross-talk among monopolar surface electromyographic signals from the superficial quadriceps femoris muscles
    T W Beck
    University of Oklahoma, Department of Health and Exercise Science, 110 Huston Huffman Center, Norman, Oklahoma 73019 6081, USA
    Electromyogr Clin Neurophysiol 50:245-50. 2010
    ..Thus, the monopolar EMG signals from these muscles should be interpreted carefully and with the understanding that at least a portion of the signal from each muscle is due to cross-talk...
  46. ncbi An examination of mechanomyographic signal stationarity during concentric isokinetic, eccentric isokinetic and isometric muscle actions
    Travis W Beck
    Department of Health and Exercise Science, University of Oklahoma, Norman, OK 73019, USA
    Physiol Meas 31:339-61. 2010
    ..Future studies need to be done to identify the mechanism(s) causing MMG signal nonstationarity during isometric muscle actions...
  47. ncbi Acute effects of a thermogenic nutritional supplement on energy expenditure and cardiovascular function at rest, during low-intensity exercise, and recovery from exercise
    Eric D Ryan
    Department of Health and Exercise Science, University of Oklahoma, Norman, Oklahoma, USA
    J Strength Cond Res 23:807-17. 2009
    ..These results suggested that the combination of thermogenic ingredients in this nutritional supplement may be useful to help maintain a negative caloric balance but may not influence substrate use or perceived exertion...
  48. ncbi The effects of adding leucine to pre and postexercise carbohydrate beverages on acute muscle recovery from resistance training
    Matt S Stock
    Department of Health and Exercise Science University of Oklahoma, Norman, Oklahoma, USA
    J Strength Cond Res 24:2211-9. 2010
    ....
  49. ncbi The consistency of ordinary least-squares and generalized least-squares polynomial regression on characterizing the mechanomyographic amplitude versus torque relationship
    Trent J Herda
    Department of Health and Exercise Science, University of Oklahoma, Norman, OK 73019, USA
    Physiol Meas 30:115-28. 2009
    ..Future studies should examine alternative methods for improving the consistency and reliability of the patterns of response for the MMG(RMS) versus isometric torque relationship...
  50. ncbi Innervation zone location of the biceps brachii, a comparison between genders and correlation with anthropometric measurements
    Jason M Defreitas
    Biophysics Laboratory, Department of Health and Exercise Science, University of Oklahoma, Norman, OK 73019, USA
    J Electromyogr Kinesiol 20:76-80. 2010
    ..The shift in IZ location with changes in elbow joint angle was not, however, related to height, weight, or humerus length...
  51. ncbi The effects of beta-alanine supplementation and high-intensity interval training on neuromuscular fatigue and muscle function
    Abbie E Smith
    Department of Health and Exercise Science, Metabolic and Body Composition Laboratory, University of Oklahoma, Norman, OK 73019, USA
    Eur J Appl Physiol 105:357-63. 2009
    ..In conclusion, HIIT appeared to be the primary stimulus effecting EMG(FT) or EEA, suggesting adaptations from HIIT may be more influential than increasing skeletal muscle carnosine levels on delaying fatigue in recreationally active men...
  52. ncbi Inter-individual variability in the torque-related patterns of responses for mechanomyographic amplitude and mean power frequency
    Eric D Ryan
    Department of Health and Exercise Science, Biophysics Laboratory, University of Oklahoma, 1401 Asp Avenue, Norman, OK 73019 6081, USA
    J Neurosci Methods 161:212-9. 2007
    ..Therefore, future studies should examine the individual patterns of response to draw conclusions about motor control strategies...
  53. ncbi An acute bout of static stretching does not affect maximal eccentric isokinetic peak torque, the joint angle at peak torque, mean power, electromyography, or mechanomyography
    Joel T Cramer
    Department of Health and Exercise Science, University of Oklahoma, Norman, OK 73019 6081, USA
    J Orthop Sports Phys Ther 37:130-9. 2007
    ..Repeated-measures experimental design...
  54. ncbi Passive properties of the muscle-tendon unit: the influence of muscle cross-sectional area
    Eric D Ryan
    Biophysics Laboratory, Department of Health and Exercise Science, University of Oklahoma, 1401 Asp Avenue, HHC Room 12, Norman, Oklahoma 73019 6081, USA
    Muscle Nerve 39:227-9. 2009
    ..05; r = 0.765). Since passive stiffness and the ability to absorb passive energy decreases with many diseases, these findings may support the need to maintain or increase muscle CSA...
  55. ncbi Linearity and reliability of the mechanomyographic amplitude versus dynamic torque relationships for the superficial quadriceps femoris muscles
    Matthew S Stock
    Department of Health and Exercise Science, University of Oklahoma, 1401 Asp Avenue, Norman, Oklahoma 73019, USA
    Muscle Nerve 41:342-9. 2010
    ..When using MMG in the clinical setting, dynamic muscle actions of the superficial quadriceps femoris muscles do not appear to be appropriate for assessing changes in muscle function during strength training...
  56. ncbi An examination of the frequency-specific behavior of the mechanomyographic amplitude versus isometric torque relationship
    T W Beck
    Department of Health and Exercise Science, University of Oklahoma, Norman, OK 73019 6081, USA
    Electromyogr Clin Neurophysiol 49:35-42. 2009
    ..These findings indicated that there were both muscle- and frequency-specific discrepancies in the MMG amplitude versus isometric torque relationship that could be due to differences in muscle architecture and/or fiber type composition...
  57. ncbi The effects of creatine loading and gender on anaerobic running capacity
    David H Fukuda
    Metabolic and Body Composition Laboratory, Department of Health and Exercise Science, University of Oklahoma, Norman, Oklahoma, USA
    J Strength Cond Res 24:1826-33. 2010
    ..Creatine loading may be used before competition by athletes to provide improvements in high-intensity, short-duration activities...
  58. ncbi Cross-correlation analysis of mechanomyographic signals detected in two axes
    Travis W Beck
    Department of Health and Exercise Science, University of Oklahoma, Norman, OK, USA
    Physiol Meas 30:1465-71. 2009
    ..89. These findings showed a high level of association between the MMG signals detected in the perpendicular and transverse axes. Thus, it may not be necessary to detect MMG signals in multiple axes...
  59. ncbi A comparison of critical force and electromyographic fatigue threshold for isometric muscle actions of the forearm flexors
    C Russell Hendrix
    Department of Nutrition and Health Sciences, University of Nebraska Lincoln, Lincoln, NE 68583 0806, USA
    Eur J Appl Physiol 105:333-42. 2009
    ....
  60. ncbi The linearity and reliability of the mechanomyographic amplitude versus submaximal isometric force relationship
    Travis W Beck
    Department of Health and Exercise Science, University of Oklahoma, Norman, OK 73019, USA
    Physiol Meas 30:1009-16. 2009
    ..g. training, detraining, stretching, etc). Future studies need to be done to determine the cause(s) for this lack of linearity and reliability and possible techniques that can be used to improve it...
  61. ncbi A wavelet-based analysis of surface mechanomyographic signals from the quadriceps femoris
    Travis W Beck
    Department of Health and Exercise Science, Biophysics Laboratory, University of Oklahoma, 1401 Asp Avenue, 110 Huston Huffman Center, Norman, Oklahoma 73019 6081, USA
    Muscle Nerve 39:355-63. 2009
    ....
  62. ncbi Acute effects of static stretching on peak torque in women
    Joel T Cramer
    Department of Health and Human Performance, Center for Youth Fitness and Sports Research, University of Nebraska Lincoln, Lincoln, Nebraska 68588, USA
    J Strength Cond Res 18:236-41. 2004
    ..Future studies are needed to identify the underlying mechanisms that influence the time course of stretching-induced decreases in maximal force production for athletes and nonathletes across the age span...
  63. ncbi Acute effects of static stretching on maximal eccentric torque production in women
    Joel T Cramer
    Department of Health and Exercise Science, University of Oklahoma, Norman, Oklahoma 73019, USA
    J Strength Cond Res 20:354-8. 2006
    ..In conjunction with previous studies, these findings suggested that static stretching may affect torque production during concentric, but not eccentric, muscle actions...
  64. ncbi Effects of leucine and whey protein supplementation during eight weeks of unilateral resistance training
    Jared W Coburn
    Department of Kinesiology, California State University, Fullerton, Fullerton, California 92834, USA
    J Strength Cond Res 20:284-91. 2006
    ..The current findings suggest that leucine and whey protein supplementation may provide an ergogenic effect which enhances the acquisition of strength beyond that achieved with resistance training and a carbohydrate placebo...
  65. ncbi The effects of innervation zone on electromyographic amplitude and mean power frequency during incremental cycle ergometry
    Moh H Malek
    University of Nebraska Lincoln, Human Performance Laboratory, Department of Nutrition and Health Sciences, Lincoln, NE 68583 0806, USA
    J Neurosci Methods 155:126-33. 2006
    ..Thus, during cycle ergometry, normalized EMG amplitude values (but not absolute values) can be compared between studies that have utilized various electrode placement sites on the VL...
  66. ncbi The effects of interelectrode distance on electromyographic amplitude and mean power frequency during incremental cycle ergometry
    Moh H Malek
    Human Performance Laboratory, Department of Nutrition and Health Sciences, University of Nebraska Lincoln, 110 Ruth Leverton Hall, Lincoln, NE 68583 0806, USA
    J Neurosci Methods 151:139-47. 2006
    ..The current findings supported the process of normalization for EMG amplitude and MPF data obtained during cycle ergometry when comparisons are made for different IEDs...
  67. ncbi A new non-exercise-based Vo2max prediction equation for aerobically trained men
    Moh H Malek
    Human Performance Laboratory, Department of Nutrition and Health Sciences, University of Nebraska Lincoln, Nebraska 68583 0806, USA
    J Strength Cond Res 19:559-65. 2005
    ..Cross-validation of this equation on the remaining sample of 40 subjects resulted in a %TE of 10%. Therefore, the non-exercise-based equation derived in the present study is recommended for estimating Vo(2)max in aerobically trained men...
  68. ncbi A new nonexercise-based VO2(max) equation for aerobically trained females
    Moh H Malek
    Human Performance Laboratory, Department of Nutrition and Health Sciences, University of Nebraska Lincoln, 110 Ruth Leverton Hall, Lincoln, NE 68583 0806, USA
    Med Sci Sports Exerc 36:1804-10. 2004
    ....
  69. ncbi Mechanomyographic responses of the vastus medialis to isometric and eccentric muscle actions
    Jared W Coburn
    Department of Nutrition and Health Sciences, University of Nebraska Lincoln, Lincoln, NE 68583 0806, USA
    Med Sci Sports Exerc 36:1916-22. 2004
    ..Therefore, the purpose of this study was to examine the MMG amplitude and mean power frequency (MPF) versus torque relationships during isometric and eccentric isokinetic muscle actions...
  70. ncbi Validity of VO2max equations for aerobically trained males and females
    Moh H Malek
    University of Nebraska Lincoln, Human Performance Laboratory, Department of Nutrition and Health Sciences, Lincoln, NE 68588 0229, USA
    Med Sci Sports Exerc 36:1427-32. 2004
    ..The purpose of this investigation was to cross-validate existing VO2max prediction equations on samples of aerobically trained males and females...
  71. ncbi Cardiovascular function following surgical repair of pectus excavatum: a metaanalysis
    Moh H Malek
    Human Performance Laboratory, Department of Nutrition and Health Sciences, University of Nebraska Lincoln, Lincoln, 68583 0806, USA
    Chest 130:506-16. 2006
    ....
  72. ncbi Effects of eight weeks of caffeine supplementation and endurance training on aerobic fitness and body composition
    Moh H Malek
    University of Nebraska Lincoln Human Performance Laboratory, Department of Nutrition and Health Sciences, Lincoln, NE 68583, USA
    J Strength Cond Res 20:751-5. 2006
    ....
  73. ncbi Electrode placement over the innervation zone affects the low-, not the high-frequency portion of the EMG frequency spectrum
    Travis W Beck
    Biophysics Laboratory, Department of Health and Exercise Science, University of Oklahoma, 1401 Asp Avenue, HHC Room 104, Norman, OK 73019 6081, United States
    J Electromyogr Kinesiol 19:660-6. 2009
    ..Thus, these findings indicated that electrode placement over the IZ affected primarily the low-, rather than the high-frequency portion of the EMG frequency spectrum...
  74. ncbi The development of rating of perceived exertion-based tests of physical working capacity
    Michelle Mielke
    Department of Nutrition and Health Sciences, Human Performance Laboratory, University of Nebraska Lincoln, Lincoln, Nebraska, USA
    J Strength Cond Res 22:293-302. 2008
    ..Furthermore, the power outputs at the PWC(BORG) and PWC(OMNI) may be useful to estimate the VT noninvasively and without the need for expired gas analysis...
  75. ncbi Acute effects of static stretching on characteristics of the isokinetic angle - torque relationship, surface electromyography, and mechanomyography
    Joel T Cramer
    Department of Health and Exercise Science, University of Oklahoma, Norman, OK 73019 6081, USA
    J Sports Sci 25:687-98. 2007
    ....
  76. ncbi Mechanomyographic and electromyographic responses of the vastus medialis muscle during isometric and concentric muscle actions
    Jared W Coburn
    University of Nebraska Lincoln, Lincoln, Nebraska 68583, USA
    J Strength Cond Res 19:412-20. 2005
    ..These results support the findings of others and suggest that isometric torque production was modulated by a combination of recruitment and firing rate, whereas dynamic torque production was modulated primarily through recruitment...
  77. ncbi Pulmonary function following surgical repair of pectus excavatum: a meta-analysis
    Moh H Malek
    Human Performance Laboratory, Department of Nutrition and Health Sciences, University of Nebraska Lincoln, 110 Ruth Leverton Hall, Lincoln, NE 68583 0806, USA
    Eur J Cardiothorac Surg 30:637-43. 2006
    ..These findings, however, may be a result of testing pulmonary function under conditions in which pectus excavatum does not manifest itself...
  78. ncbi Proposed tests for measuring the running velocity at the oxygen consumption and heart rate thresholds for treadmill exercise
    Moh H Malek
    Human Performance Laboratory, Department of Nutrition and Health Sciences, University of Nebraska Lincoln, Lincoln, Nebraska 68583, USA
    J Strength Cond Res 19:847-52. 2005
    ..Furthermore, the RV(VO(2)) and RV(HRT) test may provide submaximal techniques for estimating the VT...
  79. ncbi Cross-validation of ventilatory threshold prediction equations on aerobically trained men and women
    Moh H Malek
    Department of Nutrition and Health Sciences, University of Nebraska Lincoln, 68583, USA
    J Strength Cond Res 21:29-33. 2007
    ..The results of this study indicated that the errors associated with all 14 equations were too large to be of practical value for estimating VT in aerobically trained men and women...
  80. ncbi Estimated times to exhaustion at the PWC V O2, PWC HRT, and VT
    Michelle Mielke
    Department of Nutrition and Health Sciences, Human Performance Laboratory, University of Nebraska Lincoln, Lincoln, Nebraska, USA
    J Strength Cond Res 22:2003-10. 2008
    ..These findings indicate that the ETTE values for the PWC V O2 and PWC HRT were substantially less than those suggested in previous studies...
  81. ncbi Mechanomyographic and electromyographic responses to eccentric muscle contractions
    Jared W Coburn
    Department of Kinesiology, California State University, Fullerton, 800 N State College Blvd, KHS 235, Fullerton, California 92834 6870, USA
    Muscle Nerve 33:664-71. 2006
    ..These results suggested that eccentric torque is primarily modulated through changes in motor unit firing rate...
  82. ncbi Mechanomyographic amplitude and mean power frequency responses during isometric ramp vs. step muscle actions
    Eric D Ryan
    Department of Health and Exercise Science, Biophysics Laboratory, University of Oklahoma, Norman, OK 73019, USA
    J Neurosci Methods 168:293-305. 2008
    ..Overall, these findings indicated that the torque-related patterns of responses for MMG(RMS) and MMG(MPF) were different among subjects (i.e., inter-individual variability) and were muscle- (VL vs. RF) and mode-specific (ramp vs. step)...
  83. ncbi Neuromuscular responses to three days of velocity-specific isokinetic training
    Jared W Coburn
    Department of Kinesiology, California State University Fullerton, Fullerton, CA 92834, USA
    J Strength Cond Res 20:892-8. 2006
    ....
  84. ncbi The time course of musculotendinous stiffness responses following different durations of passive stretching
    Eric D Ryan
    Biophysics Laboratory, Department of Health and Exercise Science, University of Oklahoma, Norman, OK 73019 6081, USA
    J Orthop Sports Phys Ther 38:632-9. 2008
    ..Repeated-measures experimental design...