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Leg extension isometrics are beneficial for for inducing positive...
E3Rehab@E3Rehab
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Oct 30, 2025
~1 min read
Leg extension isometrics are beneficial for for inducing positive tendon adaptations in the rehab of patellar tendinopathy. Here’s one example of how seated leg extensions are applied in research:
1. Bend your knee to roughly 60 degrees
2. If you’re using a machine, make sure it’s too heavy for you to move
3. Push at your maximum tolerable effort for 3 seconds, relax for 3 seconds, and repeat for 4 total repetitions
4. Rest 1-2 minutes
5. Repeat 4 more times for 5 sets total
6. Perform this 3 times per week
Another example is doing 3-5 sets of 30-45 second holds with a 2 minute rest between sets.
Three things to note about rehab:
1. Always perform leg extensions on your unaffected side first to get a feel for the movement.
2. Ramp up and ramp down your effort the first few times you attempt isometrics, so you don’t accidentally get a spike in symptoms.
3. Aim for the exercise to be challenging but tolerable. Adjust the weight, range of motion, etc. as needed.
Learn more: youtu.be/SNZMgnnLz1k
1. Bend your knee to roughly 60 degrees
2. If you’re using a machine, make sure it’s too heavy for you to move
3. Push at your maximum tolerable effort for 3 seconds, relax for 3 seconds, and repeat for 4 total repetitions
4. Rest 1-2 minutes
5. Repeat 4 more times for 5 sets total
6. Perform this 3 times per week
Another example is doing 3-5 sets of 30-45 second holds with a 2 minute rest between sets.
Three things to note about rehab:
1. Always perform leg extensions on your unaffected side first to get a feel for the movement.
2. Ramp up and ramp down your effort the first few times you attempt isometrics, so you don’t accidentally get a spike in symptoms.
3. Aim for the exercise to be challenging but tolerable. Adjust the weight, range of motion, etc. as needed.
Learn more: youtu.be/SNZMgnnLz1k
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