Dorsiflexion Under Load
Restoring true dorsiflexion — the ability to drive the knee forward over the toes — is foundational to ankle resilience, sprint mechanics, and squat depth. The RIGS RAMP loads that end range safely, instead of forcing it.
The Science
Engineered Around The Kinetic Chain.
The RIGS RAMP is built on measured biomechanics — not guesswork. Here's what's actually happening when you step on it.
How It Works
Four Mechanisms. One Board.
Isolated Calf Lengthening
Two angles, two muscles. A straighter knee biases the gastrocnemius; a bent knee shifts load onto the soleus. Training both lets you address the chain where it actually limits you.
Kinetic Chain Transfer
The ankle is the first link. When ankle ROM returns, knees track better, hips rotate more cleanly, and posture stops compensating. The board fixes the foundation; the rest of the body follows.
Progressive Loading
Bodyweight, then tempo, then external load. The same board meets you where you are — early rehab, daily maintenance, or elite-level prep — by changing how you stand on it, not what you stand on.
In The Press
Trusted By The Pros.
BaltimoreRavens.com·Sep 26, 2012
Ravens Recover With Stretching Guru
The official Baltimore Ravens website profiled Roger Erickson during the team's playoff run, detailing how the longtime strength and flexibility coach was brought in to accelerate player recovery on short rest weeks.
Ravens defensive tackle Ma'ake Kemoeatu credited Roger with keeping him healthy through the team's Super Bowl–winning run.
Supporting Research
The Literature Behind It.
Peer-reviewed studies on dorsiflexion, calf flexibility, and ankle mobility that informed the design of the RIGS RAMP.
Foot Ankle Clin · 2014
Gastrocnemius Shortening and Heel Pain
Solan, Carne & Davies
The authors show a tight gastrocnemius drives Achilles and plantar fascia pain, and that targeted calf stretching resolves up to 90% of cases — the exact contracture the RIGS RAMP unloads at end range.
Biology · 2022
Acute Effects of Soleus Stretching on Ankle Flexibility, Dynamic Balance and Speed Performances in Soccer Players
Huang et al.
The study found bent-knee soleus stretching produced bigger gains in ankle flexibility, plantarflexion strength, and curved-running speed — and the RIGS RAMP targets that exact muscle with precision.
Eur J Appl Physiol · 2017
Constant-Torque vs. Constant-Angle Stretching of the Plantar Flexors
Konrad, Budini & Tilp
Standing on the RIGS RAMP delivers constant torque at a fixed, specific angle — the same loading approach this study links to the largest range-of-motion gains.