[1
]
Department of Rehabilitation Medicine, Kumamoto Rehabilitation Hospital, Kumamoto,
Japan.
[2
]
Department of Rehabilitation Medicine, Yokohama City University Medical Center, Kanagawa,
Japan.
[3
]
Department of Lifespan Developmental Sciences, Graduate School of Comprehensive Human
Sciences, University of Tsukuba, Tokyo, Japan.
[4
]
Research Team for Promoting Independence of the Elderly, Tokyo Metropolitan Institute
of Gerontology, Tokyo, Japan.
[5
]
Department of Orthopedic Surgery, National Center for Geriatrics and Gerontology,
Aichi, Japan.
[6
]
Center for Gerontology and Social Science, National Center for Geriatrics and Gerontology,
Aichi, Japan. Electronic address: harai@ncgg.go.jp.