Key Finding
This study demonstrated excellent test-retest reliability of the EasyForce dynamometer for assessing knee strength, inter-limb asymmetries, and hamstring-quadriceps ratios in young healthy adults.
Abstract
Evaluating maximal strength, inter-limb asymmetries, and the hamstring-to-quadriceps (HQ) ratio is essential for identifying strength deficits in athletes.
This cross-sectional study assessed the test-retest (inter-visit) reliability of the EasyForce dynamometer for knee extension and flexion strength in young healthy participants.
Methods
Twenty-one young healthy participants (11 women and 10 men; age = 19.4 ± 0.7 years) were assessed for knee extension and flexion strength using the EasyForce dynamometer on two separate occasions.
Study Figures
Results
The dynamometer demonstrated excellent relative reliability, with ICC values of 0.99 for knee extension and 0.95–0.98 for knee flexion. Absolute reliability was also excellent with low typical error and coefficient of variation.
Conclusion
The EasyForce dynamometer with belt fixation provides highly reliable measurements of knee strength, inter-limb asymmetries, and hamstring-quadriceps ratios, making it suitable for injury prevention screening and rehabilitation monitoring.
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