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Human running on surfaces of different stiffnesses

that the leg's spring stiffness is increased as ksurf changes without altering the body's overall mechanics.

Conclusions

The study established a link between the mechanics and energetics of human running on different surfaces. Both metabolic cost and kleg change when ksurf is manipulated. The metabolic reduction is due to the track's elastic energy return assisting the runner's leg spring. This leg spring adjustment is key to the body sustaining constant support mechanisms over varying surfaces.

These findings will certainly benefit running shoe technology and new track design. But their long term promise is to enable the physically challenged to move with greater ease and comfort, with devices incorporating the latest research in biomechanics.


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Contact: Donna Krupa
djkrupa1@aol.com
703-527-7357
American Physiological Society
14-Mar-2002


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