RIGS RAMP
Functional
strength
for a
higher standard
The science behindthe angles.
Published research shows that knee position and ankle angle change how the calf complex produces force, activates and adapts.
Real science.
Better training.
Stronger humans.
Variable 01 — Knee position
Knee position decides which muscle you're training.
Knee position affects medial gastrocnemius and soleus activation during dynamic plantarflexion: no evidence for an inter-muscle compensation in healthy young adultsKovács et al., Biology Open, 2024
How this supports RIGS RAMP
Bending the knee cut plantarflexion torque by 31% and gastrocnemius activation by 35% — and the soleus did not take up the slack. That is the measured case for giving each muscle its own angle instead of one position for both.
Effect of different ankle- and knee-joint positions on gastrocnemius medialis fascicle length and EMG activity during isometric plantar flexionArampatzis et al., Journal of Biomechanics, 2006
How this supports RIGS RAMP
Across six ankle and knee angle combinations, changing joint position alone changed what the gastrocnemius produced. It is why the angles are machined and fixed rather than left to whatever a stair edge happens to offer.
Triceps surae muscle hypertrophy is greater after standing versus seated calf-raise trainingKinoshita et al., Frontiers in Physiology, 2023
How this supports RIGS RAMP
Knee-straight training grew the gastrocnemius 9.2% against 0.6% knee-bent, while the soleus grew either way. Two positions produced two different results — which is exactly why RIGS RAMP has two.
Variable 02 — Ankle angle
Ankle angle decides how hard it works — and how much it grows.
Effect of different ankle joint positions on medial gastrocnemius muscle fiber strains during isometric plantarflexionCunnane et al., Scientific Reports, 2023
How this supports RIGS RAMP
A dorsiflexed ankle produced significantly more force, at lower fibre strain, than plantarflexed positions. A few degrees of ankle angle changes what the calf can do, so RIGS RAMP holds those degrees constant.
Greater Gastrocnemius Muscle Hypertrophy After Partial Range of Motion Training Performed at Long Muscle LengthsKassiano et al., Journal of Strength and Conditioning Research, 2023
How this supports RIGS RAMP
Training between 25° dorsiflexed and neutral grew the gastrocnemius 15.2%, against 3.4% for the plantarflexed half of the range. Direct support for a fixed incline that keeps the ankle in the productive part of the range.
The takeaway
Knee position and ankle angle materially change how the calf produces force and adapts to training.
Published research supports the training principle behind two purpose-built angles. These studies did not evaluate RIGS RAMP itself.
The RIGS RAMP is exercise equipment, not a medical device. Content on this page is not medical advice and is not intended to diagnose, treat, cure, or prevent any condition. Consult your physician before beginning any exercise program, especially with an existing injury or condition. Individual results vary.
