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Modified Squat Test for Predicting Knee Muscle Strength in Older Adults
Weerasak Tapanya1, Noppharath Sangkarit1, Pacharee Manoy1
1Department of Physical Therapy, School of Allied Health Sciences, University of Phayao, Phayao, Thailand.
Annals of Geriatric Medicine and Research
|April 8, 2024
Summary
The Modified Squat Test (MST) effectively predicts knee extensor muscle strength in older adults. A new equation using age, sex, thigh circumference, and MST performance accurately estimates lower limb strength.
Area of Science:
- Gerontology
- Kinesiology
- Biomedical Engineering
Background:
- Assessing knee extensor muscle strength is crucial for evaluating lower limb function in older adults.
- Monitoring changes in muscle strength over time is important for healthy aging.
- The Modified Squat Test (MST) is a potential tool for this assessment.
Purpose of the Study:
- To validate the Modified Squat Test (MST) for predicting knee extensor muscle strength in older adults.
- To develop a predictive equation for estimating lower limb muscle strength.
Main Methods:
- 110 older adults participated in the study.
- Data collected included demographics, Modified Squat Test (MST) performance (5 and 10 repetitions), and single-leg standing balance.
- Maximum voluntary isometric contraction of knee extensors was measured.
- Stepwise multiple linear regression analysis was employed.
Main Results:
- Age, sex, thigh circumference, single-leg standing eye-open (SSEO) performance, and time for 10 MST repetitions explained 77.8% of the variation in knee extensor strength.
- A predictive equation was developed: strength = 36.78 - 0.24 (age) + 6.16 (sex) + 0.19 (thigh circumference) + 0.05 (SSEO) - 0.54 (time for 10 MST repetitions) ± 5.51 kg.
Conclusions:
- The 10-repetition Modified Squat Test (MST) is a valuable tool for predicting lower limb muscle strength.
- The developed equation provides an accurate method for estimating knee extensor strength in older adults.
