Strength Isometric Test: Ankle 1st Toe Extension

Here is one method for testing 1st toe extension isometric strength:

1. Have the client adopt a supine position, lying down on a table with their shoes and socks off. Ask the client to slide down the table until their toes of the testing foot are hanging just over the edge of the table. 
2. To ensure the first big toe is truly isolated, the practitioner should use one of their hands to fix the client’s foot while performing this test. 
3. Set the press pad of the Muscle Meter over the top of the client’s lateral four metatarsals, before queuing them to pull said toes up as hard as they can.
4. Ensure the client sustains this effort for 2-3 seconds to achieve their maximal force production. Once performed, hit save in the Measurz app and compare to the other side.

It's important to note that proper positioning of the dynamometer is critical for accurate measurements, and the tester should be trained in the proper technique before administering the test. Additionally, normative data for this test may vary depending on the population being tested and the specific protocol used.

References:

1. Barbado, D., López-Valenciano, A., Juan-Recio, C., Montero-Carretero, C., van Dieën, J. H., & Vera-Garcia, F. J. (2016). Reliability and criterion-related validity of a handheld dynamometer for trunk flexor isometric endurance tests in older adults. PloS one, 11(2), e0148994.
2. Kim, K., Lee, J., Kwon, O. Y., Yi, C. H., & Cynn, H. S. (2019). The effects of plantar flexor and dorsiflexor static stretching on balance, ankle range of motion, and dynamic plantar pressure distribution during gait in adults with flexible flatfoot. Journal of physical therapy science, 31(8), 665-669.
3. McMurray, R. G., Ainsworth, B. E., & Harrell, J. S. (1998). Isometric strength of the quadriceps femoris muscle in college-aged men and women. Research quarterly for exercise and sport, 69(4), 411-414.