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Relationships among Grip Strength Measurement, Response Time, and Frailty Criteria
1Yasuo Suzuki, 26-2 Higashihaemi-cho, Handa-city, Aichi, 475-0012, Japan, Email: yasuo-s@n-fukushi.ac.jp, Phone: +81-569-20-0112, Fax: +81-569-20-0127.
The Journal of Frailty & Aging
|July 26, 2023
Summary
Grip strength response speed decreases with frailty in older adults. Measuring grip strength response in both hands can help assess frailty and muscle response in aging populations.
Area of Science:
- Gerontology
- Muscle Physiology
- Clinical Assessment
Background:
- Muscle response decline is suspected in older adults but not well-assessed.
- The link between frailty and muscle response remains unclear.
Purpose of the Study:
- To develop a practical method for measuring grip strength response in older adults.
- To investigate the relationship between frailty and grip strength response.
Main Methods:
- Cross-sectional observational study of 248 older adults (mean age 78.2 years).
- Utilized a novel grip strength device to measure reaction time, time constant, rate of force development (response speed), and maximum grip strength.
- Compared grip strength response indices across robust, pre-frail, and frail groups using Fried and Kihon checklist assessments.
Main Results:
- Significant differences in maximal grip strength, response time, and response speed were observed between groups based on Fried's assessment.
- Kihon checklist assessment showed no significant difference in response time but a notable difference in response speed for the left hand.
- Some individuals showed muscle response differences without changes in maximal muscle strength, particularly with the Kihon checklist.
Conclusions:
- Grip strength response speed appears to diminish with increasing frailty.
- Assessing grip strength response in both hands is valuable for understanding frailty and muscle response dynamics in older adults.
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