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Preventing frailty of elderly is an urgent issue in Japan. The "Yubi-wakka" (finger-ring) test was developed and validated as a predictor of sarcopenia, disability and even mortality. To clarify the prevalence of "frailty" defined by this test and the relationship between other indexes cross-sectionally and prospectively, we conducted this study.

“Yubi-wakka” (Finger-Ring) Test: A Tool to Detect Prefrailty in Elderly Populations, a Pilot Study