[Relevance of the five-repetition sit-to-stand test for diagnosing sarcopenia in elderly inpatients with cardiac disease].

Purpose: The aim of this study was to determine the reference values for diagnosing sarcopenia using the five-repetition sit-to-stand test in elderly inpatients with cardiac disease.

Methods: We studied 71 inpatients with cardiac disease ≥65 years of age (mean age 78.0±7.

[The isometric knee extension strength threshold for maintaining walking speed and step length in older male inpatients].

Aim: To clarify the minimum knee extension muscle strength needed to maintain walking speed and step length in older male inpatients.

Method: The participants were 786 male inpatients of ≥65 years of age without cerebrovascular disorder, orthopedic disease, malignancy, or dementia. We investigated the participants' isometric knee extension muscle force (kgf/kg), maximum walking speed (m/s) and step length, based on their medical records.