Relationship between wheelchair user's physical load and road environment by energy metabolism and wheelchair driving force

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The purpose of this study is to evaluate the physical load of the wheelchair users while they are propelling a wheelchair on road, and to realize barrier-free environment. We evaluated the physical load using the oxygen cost index from oxygen uptake, workload and power from wheelchair driving force. The oxygen cost index and the power of wheelchair driving force are useful index for the assessment of barrier-free road environment, route selection with lower stress, and the universal design of slope.