Characteristic of children with developmental disabilities with respect to physical fitness and physiological stress.

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Children with developmental disabilities(CDD) are often physically clumsy. We hypothesized that the reasons of this physically clumsy is muscle tonus and the weak motivation by psychosocial stress accompany developmental disabilities. To verify the hypothesis, we measured the physical fitness and urinary stress hormone in CDD. CDD were different in urinary stress hormone state compared to neurotypical peers, but not different in physical fitness. These results did not clarify the characteristic of physical fitness and physiological stress in CDD, but suggest that CDD are not similar to neurotypical peers in physiological stress state.