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To design a new type of crunches to solve inconveniencies of patients who
use crutches because of damage on the leg are inconvenient when carrying
and storing it and sitting down and rising.
To propose a new crunches wearing on the food because it is not easy to
carry and store the existing crunches due to its length and size
cheongju university
cheongju, South Korea
cheongju university
cheongju, South Korea