Effect of Isometric Knee Extension Strength on the One-leg Standing Time of Elderly Inpatients

• Published in: Rigaku ryoho kagaku Vol. 31; no. 5; pp. 751 - 753
• Main Authors: TSUDA, Yasumichi, KASHIMA, Kensaku, YAMASAKI, Hiroshi, KAWAMURA, Mitsugu, OOGIKU, Satoru, MABUCHI, Masaru, SHINOHARA, Tsutomu
• Format: Journal Article
• Language: English; Japanese
• Published: The Society of Physical Therapy Science 2016
• Subjects: elderly inpatients; knee extension muscle strength; one-leg balance test
• ISSN: 1341-1667; 2434-2807
• DOI: 10.1589/rika.31.751

[Purpose] To clarify the influence of isometric knee extension strength (IKES) on the one-leg standing (OLS) time. [Subjects and Methods] The subjects were 323 elderly inpatients. They were divided into groups, on the basis of IKES, from 0.2 to 0.6 kgf/kg at 0.1 kgf/kg intervals, and their OLS times were compared. [Results] The results showed that when both the left and right leg IKES was low, OLS times were short. When subjects were dichotomized on the basis of 0.4 kgf/kg IKES for both the right and left legs, a significant difference was found in the OLS times of the two groups. However, no significant difference in OLS times was found between the group of subjects with IKES > 0.5 kgf/kg, and any of the other groups. [Conclusion] There is a close relationship between IKES and OLS time, and it seems that, when IKES drops below 0.4 kgf/kg, the effect on OLS time is large.