Physical Therapy · 2000 · 100 citations · 16 references
Measurements for both the PPT-8 and the 6-minute walk test appeared to be highly reliable. The PPT-8 was more responsive than the 6-minute walk test to change in performance expected with this functional training intervention.
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A Guttman Health Scale for the Aged
Irving Rosow, Naomi Breslau · Journal of Gerontology · 1966 · 1.1K citations