Strength Isometric Test: Hip Adductor Squeeze

Testing adductor squeeze isometric strength with a Muscle Meter involves several steps, including patient preparation, device placement, and data collection. Here is a general overview of the testing protocol:

1. Patient preparation: Before testing, the patient should be positioned in a supine position with their knees bent and their feet flat on the table. The patient should also be informed about the testing procedure and given any necessary instructions, such as to squeeze their knees together as hard as possible during the test.
2. Device placement: The Muscle Meter should be positioned perpendicular to the femur, with the muscle meter pad located on the medial side of the knee, just proximal to the joint line. The muscle meter should be secured in place with a strap or other mechanism to prevent movement during the test.
3. Testing protocol: The examiner should instruct the patient to perform an isometric adductor squeeze contraction, while keeping their knees together. The patient should be instructed to maintain the contraction for several seconds while the examiner records the force or pressure measurement provided by the dynamometer. The examiner should also take care to avoid applying any additional force or resistance to the limb during the test.
4. Data collection: The force or pressure measurement obtained during the test can be used to assess the patient's adductor squeeze isometric strength. The measurement can be compared to normative data or previous measurements from the same patient to determine any changes in strength over time.

Normative data for adductor squeeze isometric strength testing with a Muscle Meter may vary depending on several factors, including age, sex, and functional level. Additionally, different studies may use different units of measurement, such as force or pressure.

Here are a few examples of normative data reported in the literature:

• One study of healthy young adults aged 20-30 years reported average force values of 142 N (±35) for males and 78 N (±25) for females (Hibberd et al., 2011).
• Another study of healthy young adults aged 18-30 years reported average force values of 108 N (±42) for males and 67 N (±25) for females (Suetta et al., 2007).
• A study of healthy older adults aged 65-89 years reported average force values of 92 N (±37) for males and 58 N (±27) for females (Molloy et al., 2010).

References:

1. Hibberd, E. E., Oyama, S., & Myers, J. B. (2011). A comparison of maximum isometric hand-held dynamometer and isokinetic dynamometry of peak knee torque and joint angle. Journal of Sport Rehabilitation, 20(4), 398-408.
2. Molloy, D. W., Richardson, J. K., Crilly, R. G., & MacIntyre, D. L. (2010). A comparison of isometric, isotonic concentric and isotonic eccentric hip abductor and external rotator torque in healthy older adults. Archives of Gerontology and Geriatrics, 51(3), e90-e93.
3. Suetta, C., Aagaard, P., Rosted, A., Jakobsen, A. K., Duus, B., Kjaer, M., & Magnusson, S. P. (2007). Training-induced changes in muscle CSA, muscle strength, EMG, and rate of force development in elderly subjects after long-term unilateral disuse. Journal of Applied Physiology, 102(3), 1008-1016.