“I’ve been dealing with patellar tendinopathy since years, nothing gave me more pain than double unders. Last year I get some serious frustrations being bottom field every time DU appeared and wasn’t able to hammer down this weakness because of immediate inflammation post. But in November I discovered The Nude Foot and I am wearing it since January every single session and — keeping my fingers crossed — since then the pain is gone and I am finally able to push my DU and to enjoy them in competition without pain.”
— Manon Angonese, @manon_thewhiteshark
Three years is a long time to manage pain. Three years of calculating which workouts to scale, which movements to avoid, which competitions to approach with lowered expectations. For Manon Angonese — competitive CrossFit athlete and one of the most technically sharp athletes in her community — double unders were the movement that defined that frustration.
Not because she couldn’t do them. Because every time she pushed the volume, her knee paid for it. Immediately. Without fail.
Then she changed her shoes. And the pain stopped.
Why Double Unders Destroy Knees With Patellar Tendinopathy
Patellar tendinopathy is one of the most common overuse injuries in athletes who jump, land, and change direction repeatedly. CrossFit’s combination of repeated loaded jumps, box work, and double unders creates a very specific demand on the patellar tendon — and for athletes who already have tendon sensitivity, that demand can trigger inflammation within minutes of high-volume work.
Double unders are particularly brutal for two reasons. First, the rapid, repetitive ground contact (hundreds of contacts in a single set) generates a continuous loading cycle through the patellar tendon. Second, in conventional cushioned shoes, that load is often absorbed in a way that changes how the knee tracks — subtly altering the mechanics and placing stress on tissues that aren’t prepared to handle it.
The result is what Manon described: you’re not just in pain during the workout. You’re inflamed after it. The window for training closes fast.
What Happens Biomechanically When You Go Barefoot
Barefoot and minimalist training doesn’t eliminate load. What it does is change how the body receives and distributes it.
In a zero-drop, thin-soled shoe, your foot is forced to function as it was designed to: your toes splay for balance, your intrinsic foot muscles activate, your ankle moves through a fuller range, and your proprioceptive feedback is sharp and immediate. This changes the entire kinetic chain.
For athletes with patellar tendinopathy, this shift matters significantly. When the foot lands more naturally — closer to a forefoot or midfoot strike pattern, with toes spread and ankle absorbing more of the impact — the knee is no longer compensating for poor ground mechanics. The load gets distributed across the ankle, calf, and foot musculature rather than spiking through the patellar tendon.
It doesn’t happen overnight. It’s a process. And as Manon notes, barefoot training worked alongside a deliberate rehab approach: targeted foot plyometrics, proprioceptive training, and progressive loading of the tendon under controlled conditions.
The shoe change created the conditions for recovery. The rehab did the structural work. Together, they gave her the knee back.
The Transition That Makes the Difference
What’s significant about Manon’s story isn’t just that the pain stopped. It’s the timeline. She started wearing The Nude Foot in January. By competition season, double unders were no longer a weakness to manage — they were a movement she could push, enjoy, and compete with.
That’s the compound effect of training the foot correctly. The intrinsic muscles strengthen. The ankle mechanics improve. The proprioceptive system becomes more accurate. And the knee, freed from compensating for a dysfunctional base, can finally do its job without breaking down.
If You’re Managing Knee Pain in CrossFit, Read This
Patellar tendinopathy is not a reason to stop training. But it is a signal that something in your movement chain needs attention — and more often than not, that something starts at the bottom.
Manon’s protocol is worth noting: she didn’t just change her shoes and hope for the best. She added targeted rehab. Foot plyometrics. Proprioceptive work. The barefoot shoe was the foundation, not the entire solution. But it was the piece that unlocked everything else.
If you’re dealing with chronic knee pain that spikes with jumping or rope work, the question worth asking is: what is your foot doing when it hits the ground, and is your shoe helping or hiding the problem?
Barefoot training is one of the most underused tools in athletic recovery and injury prevention. It’s not a miracle cure. It’s a return to how the foot was designed to function — and for athletes like Manon, that return has been the difference between competing in pain and competing without limits.
Train from the ground up. Every time.
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