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Alena M. Grabowski
Researcher at University of Colorado Boulder
Publications - 82
Citations - 2572
Alena M. Grabowski is an academic researcher from University of Colorado Boulder. The author has contributed to research in topics: Ground reaction force & Medicine. The author has an hindex of 22, co-authored 72 publications receiving 2061 citations. Previous affiliations of Alena M. Grabowski include United States Department of Veterans Affairs & Massachusetts Institute of Technology.
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Bionic ankle–foot prosthesis normalizes walking gait for persons with leg amputation
TL;DR: This work compared metabolic energy costs, preferred velocities and biomechanical patterns of seven people with a unilateral transtibial amputation using the bionic prosthesis and using their own passive-elastic prosthesis to those of seven non-amputees during level-ground walking.
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Independent metabolic costs of supporting body weight and accelerating body mass during walking
TL;DR: The cost of performing work to redirect and accelerate the center of mass is almost twice as great as the cost of generating force to support body weight, supporting the hypothesis that force and work each incur a significant metabolic cost during normal walking.
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The fastest runner on artificial legs: different limbs, similar function?
Peter G. Weyand,Matthew W. Bundle,Craig P. McGowan,Alena M. Grabowski,Mary Beth Brown,Rodger Kram,Hugh M. Herr +6 more
TL;DR: It is concluded that running on modern, lower-limb sprinting prostheses appears to be physiologically similar but mechanically different from running with intact limbs.
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Leg exoskeleton reduces the metabolic cost of human hopping
Alena M. Grabowski,Hugh M. Herr +1 more
TL;DR: Two elastic leg exoskeletons that act in parallel with the wearer's legs were designed to reduce metabolic demand and adjust leg stiffness so that the combination of the hopper and exoskeleton would behave as a linear spring-mass system with the same total stiffness as during normal hopping.
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Effects of velocity and weight support on ground reaction forces and metabolic power during running.
Alena M. Grabowski,Rodger Kram +1 more
TL;DR: The scientific goal was to quantify the separate and combined effects of running velocity and weight support on GRFs and metabolic power, and found many combinations that decreased peak vertical GRFs yet demanded the same metabolic power as running slower at normal weight.