Fall risk assessment and ......

.........knee extensor muscle activity in elderly people

Yukiko Oya¹⁾, Masumi Nakamura¹⁾, Emi Tabata¹⁾, Ryo Morizono¹⁾, Sachiko Mori¹⁾, Yukari Kimuro¹⁾, Etsuo Horikawa^{1) 2)}

 

1) Graduate School of Medicine, Saga University 2) Center for Comprehensive and Community Medicine, Faculty of Medicine, Saga University 

Released 2008/07/14   

 

Keywords: Community-dwelling elderly people, Falls, Knee extensor muscle, Peak latency, Hand-held dynamometer

ABSTRACT

Purpose: The purpose of this study was to analyze relationships between the history of falls, tripping, sway, and knee extensor muscle strengths as a tool for fall risk assessment in elderly people. We examined effective fall prevention measures.

Methods: We investigated 102 elderly volunteers in the community. The subjects were classified according to history of falls, tripping, sway and 5 performance tests conducted to assess fall risk including Timed up-and-go test (TUG), Functional Reach test (FR), Hand grip and Reaction time (RT). In addition, the time serial data of the knee extensor muscle strength were acquired using a hand-held dynamometer.

Results: In comparison to the non-faller group, the faller group showed a significantly higher incident rate of tripping and sway. A frequency analysis using the Maximum Entropy Method revealed that the fallers group showed lower peak frequency (p=0.025). Also, the slope of the logarithmical spectrum was less steep in the fallers group (p=0.035). Also results from analysis of the peak force latency from the beginning of measurement to 50%, 80%, and 100% muscle strength, also showed that the faller group took more time for maximal voluntary contraction.

Conclusions: The frequency analysis of the time series date of peak force latency of knee extensor muscle strength revealed that the muscle activity differs in faller compared to non-fallers. This study suggested that knee extensor muscle isometric performance could possibly be used as a new tool for fall risk assessment. We concluded that exercises to raise maximal muscle strength and muscle response speed are useful for the prevention of falls.




Quelle:   https://www.jstage.jst.go.jp/article/geriatrics/45/3/45_3_308/_article

Der Full Text / pdf  ist leider in japanischer Schrift.

JÖRG LINDER AKTIV-TRAINING – Ihr Personal Trainer für Baden-Baden, Sinzheim, Bühl,  Karlsruhe, Offenburg, Freiburg, Breisgau, Pforzheim, Heidelberg, Mannheim, Stuttgart   (überregional auf Anfrage)

 

JÖRG LINDER AKTIV-TRAINING

Mauerbergstraße 110

76534 Baden-Baden

Tel.: 07223 / 8004699

Mobil: 0177 / 4977232

Mail: info@aktiv-training.de

Fax: 07223 / 8005271

Main website: www.aktiv-training.de

Training Baden-Baden:  www.training-baden-baden.de

Blogspot: www.aktiv-training.blogspot.com

Prävention: www.preventex.de