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38949178520
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We have chosen terminology that distinguishes generative braking from regenerative braking because the electricity produced in regenerative braking is reused to power the motion of the hybrid automobile. In generative braking, the electricity is not reused to power walking
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We have chosen terminology that distinguishes generative braking from regenerative braking because the electricity produced in regenerative braking is reused to power the motion of the hybrid automobile. In generative braking, the electricity is not reused to power walking.
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15
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38949138183
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Knee-joint power has contributions from forces generated by muscle fibers, tendons, connective tissue, and other passive soft tissues. The actual change in metabolic cost with generative braking depends on the relative contribution of muscle fibers to decelerating the knee joint. If muscle fibers are generating the negative power, a reduction in metabolic cost is expected. This is also true if muscle fibers are active but isometric. If the deceleration is due entirely to passive forces from elastic and plastic deformations of soft tissues, no change in metabolic cost is expected. What actually occurs at the knee during the end of the swing phase is unclear, precluding a quantitative prediction of the change in metabolic cost
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Knee-joint power has contributions from forces generated by muscle fibers, tendons, connective tissue, and other passive soft tissues. The actual change in metabolic cost with generative braking depends on the relative contribution of muscle fibers to decelerating the knee joint. If muscle fibers are generating the negative power, a reduction in metabolic cost is expected. This is also true if muscle fibers are active but isometric. If the deceleration is due entirely to passive forces from elastic and plastic deformations of soft tissues, no change in metabolic cost is expected. What actually occurs at the knee during the end of the swing phase is unclear, precluding a quantitative prediction of the change in metabolic cost.
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38949140608
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Additional methodological details, results, and videos are available as supporting material on Science Online.
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Additional methodological details, results, and videos are available as supporting material on Science Online.
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38949152034
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The one-way clutch prevents the device from generating electricity from flexion. Nevertheless, we refer to this mode as continuous generation because, unlike the generative-braking mode, electricity is continually generated from extension regardless of whether the motion is accelerating or decelerating
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The one-way clutch prevents the device from generating electricity from flexion. Nevertheless, we refer to this mode as continuous generation because, unlike the generative-braking mode, electricity is continually generated from extension regardless of whether the motion is accelerating or decelerating.
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38949217455
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We used t tests to determine whether there was a statistical difference between conditions with an alpha level of 0.05. All electrical power comparisons were statistically significant
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We used t tests to determine whether there was a statistical difference between conditions with an alpha level of 0.05. All electrical power comparisons were statistically significant.
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Supported by a Natural Sciences and Engineering Research Council (NSERC) grant I2IPJ/326586-05 to J.M.D. and J.A.H, a Michael Smith Foundation for Health Research (MSFHR) Scholar Award to J.M.D, a Canadian Institutes of Health Research New Investigator Award to J.M.D, a MSFHR Postdoctoral Trainee Award to Q.L, and an NSERC Undergraduate Student Researcher Award to V.N. We thank Ossur for providing the knee braces, as well as S. H. Collins, R. Kram, A. Ruina, and the SFU Locomotion Lab for their helpful comments and suggestions. J.M.D. is chief science officer and board member of Bionic Power, Incorporated. J.M.D, Q.L, J.A.H, D.J.W, and A.D.K. have equity interest in Bionic Power, Incorporated, which performs research and development on the energy-harvesting technology reported in this paper
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Supported by a Natural Sciences and Engineering Research Council (NSERC) grant I2IPJ/326586-05 to J.M.D. and J.A.H., a Michael Smith Foundation for Health Research (MSFHR) Scholar Award to J.M.D., a Canadian Institutes of Health Research New Investigator Award to J.M.D., a MSFHR Postdoctoral Trainee Award to Q.L, and an NSERC Undergraduate Student Researcher Award to V.N. We thank Ossur for providing the knee braces, as well as S. H. Collins, R. Kram, A. Ruina, and the SFU Locomotion Lab for their helpful comments and suggestions. J.M.D. is chief science officer and board member of Bionic Power, Incorporated. J.M.D., Q.L., J.A.H., D.J.W., and A.D.K. have equity interest in Bionic Power, Incorporated, which performs research and development on the energy-harvesting technology reported in this paper.
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