John K De Witt

Summary

Affiliation: NASA Ames Research Center
Country: USA

Publications

  1. ncbi request reprint Ground reaction forces during treadmill running in microgravity
    John K De Witt
    Wyle Science, Technology and Engineering Group, 1290 Hercules, Ste 120, Houston, TX 77058, USA Electronic address
    J Biomech 47:2339-47. 2014
  2. ncbi request reprint Mechanical factors associated with the development of high ball velocity during an instep soccer kick
    John K De Witt
    Department of Kinesiology, Arizona State University, Tempe, AZ, USA
    Sports Biomech 11:382-90. 2012
  3. doi request reprint The effect of increasing inertia upon vertical ground reaction forces and temporal kinematics during locomotion
    John K De Witt
    Wyle s Life Sciences Group, Houston, TX 77058, USA
    J Exp Biol 211:1087-92. 2008
  4. doi request reprint Determinants of time to fatigue during nonmotorized treadmill exercise
    John K De Witt
    Wyle s Life Sciences Group, Houston, Texas, USA
    J Strength Cond Res 23:883-90. 2009
  5. doi request reprint Determination of toe-off event time during treadmill locomotion using kinematic data
    John K De Witt
    Wyle Integrated Science and Engineering Group, NASA Johnson Space Center, Hercules, Ste 120, Houston, TX 77058, USA
    J Biomech 43:3067-9. 2010
  6. ncbi request reprint Locomotion in simulated and real microgravity: horizontal suspension vs. parabolic flight
    John K De Witt
    Wyle Integrated Science and Engineering Group, Houston 77058, USA
    Aviat Space Environ Med 81:1092-9. 2010
  7. doi request reprint Peak vertical jump power estimations in youths and young adults
    William E Amonette
    Human Performance Laboratory, Fitness and Human Performance Program, University of Houston Clear Lake, Houston, Texas, USA
    J Strength Cond Res 26:1749-55. 2012
  8. doi request reprint Effects of different lifting cadences on ground reaction forces during the squat exercise
    Jason R Bentley
    Wyle Integrated Science and Engineering Group, Houston, Texas, USA
    J Strength Cond Res 24:1414-20. 2010

Detail Information

Publications8

  1. ncbi request reprint Ground reaction forces during treadmill running in microgravity
    John K De Witt
    Wyle Science, Technology and Engineering Group, 1290 Hercules, Ste 120, Houston, TX 77058, USA Electronic address
    J Biomech 47:2339-47. 2014
    ....
  2. ncbi request reprint Mechanical factors associated with the development of high ball velocity during an instep soccer kick
    John K De Witt
    Department of Kinesiology, Arizona State University, Tempe, AZ, USA
    Sports Biomech 11:382-90. 2012
    ..Segmental coordination that occurs during a maximal effort kick is critical for completing a successful kick...
  3. doi request reprint The effect of increasing inertia upon vertical ground reaction forces and temporal kinematics during locomotion
    John K De Witt
    Wyle s Life Sciences Group, Houston, TX 77058, USA
    J Exp Biol 211:1087-92. 2008
    ..The increased inertial forces were utilized independently from gravitational forces by the motor control system when determining coordination strategies...
  4. doi request reprint Determinants of time to fatigue during nonmotorized treadmill exercise
    John K De Witt
    Wyle s Life Sciences Group, Houston, Texas, USA
    J Strength Cond Res 23:883-90. 2009
    ..Coaches and therapists should consider the cardiovascular fitness of an athlete or client when prescribing target speed because these factors are related to the total exercise time that can be achieved on a nonmotorized treadmill...
  5. doi request reprint Determination of toe-off event time during treadmill locomotion using kinematic data
    John K De Witt
    Wyle Integrated Science and Engineering Group, NASA Johnson Space Center, Hercules, Ste 120, Houston, TX 77058, USA
    J Biomech 43:3067-9. 2010
    ..Researchers can use the described method to determine times of heel strike and toe off during treadmill locomotion using only kinematic data...
  6. ncbi request reprint Locomotion in simulated and real microgravity: horizontal suspension vs. parabolic flight
    John K De Witt
    Wyle Integrated Science and Engineering Group, Houston 77058, USA
    Aviat Space Environ Med 81:1092-9. 2010
    ..The effect of reducing gravity on locomotion has been studied using microgravity analogues. However, there is no known literature comparing locomotion in actual microgravity (AM) to locomotion in simulated microgravity (SM)...
  7. doi request reprint Peak vertical jump power estimations in youths and young adults
    William E Amonette
    Human Performance Laboratory, Fitness and Human Performance Program, University of Houston Clear Lake, Houston, Texas, USA
    J Strength Cond Res 26:1749-55. 2012
    ....
  8. doi request reprint Effects of different lifting cadences on ground reaction forces during the squat exercise
    Jason R Bentley
    Wyle Integrated Science and Engineering Group, Houston, Texas, USA
    J Strength Cond Res 24:1414-20. 2010
    ....