[1
]
Department of Physical Therapy, School of Health Sciences, International University
of Health and Welfare, Otawara, Japan.
[2
]
Senior Services Division of Otawara, Otawara, Japan.
[3
]
Department of Physical Therapy, School of Health Sciences at Odawara, International
University of Health and Welfare, Odawara, Japan.
[4
]
Department of Geriatric Medicine, School of Medicine, International University of
Health and Welfare, Narita, Japan.