Build More Muscle and Strength in 15 Minutes a Week Than Most People Do in 5 Hours
What is Adaptive Resistance?
ARX's unique feature of adaptive resistance ensures that each repetition is perfectly matched, in both the push and pull motion, during your workout so that you receive the exact right amount of resistance automatically at every moment of your workout.
Independent Peer Reviewed Studies
Discover the groundbreaking study from Western Colorado University's High Altitude Exercise Physiology Program that directly compares traditional weight training to ARX adaptive resistance training
The International Journal of Research in Exercise and Physiology published a randomized controlled study examining the comparative effects of ARX adaptive resistance training and conventional resistance training on muscular, anthropometric and cardiorespiratory fitness.
Adaptive Resistance Technology for Perfect Workouts Every Time
ARX uses patented motorized resistance and computer software that dynamically adjusts in real-time to match the exact force you’re producing on every rep. This eliminates the need to select weights, ensuring maximal effort without guesswork or plateaus.
Precise Progress Tracking and Quantification
Every rep is measured, recorded, and analyzed via built-in software, turning your workouts into personalized data sets. Track force output, improvements over time, and even gamified milestones—far beyond what traditional equipment offers.
Ultra-Efficient: Full-Body Results in Just 10-20 Minutes, Twice a Week
Achieve superior strength, muscle gain, fat loss, and cardiovascular improvements in sessions that are 72% shorter than traditional training. A 12-week study showed ARX users gaining 2x more muscle, 2.5x more fat loss, and 3.5x better cardio fitness than weightlifters.
Versatile All-in-One Design
The Alpha and Omni have a collective total of 21+ exercises into a compact footprint, supporting over 16 full-body movements with customizable attachments. So you are able to work every muscle in your body on one single machine.
Unmatched Safety for All Ages and Abilities
With no free weights to drop and resistance that stops instantly if you do, ARX is ideal for injury rehab, seniors, or beginners. It prevents overload by always matching your input—Making it joint friendly with zero momentum and no shear force.
Scientifically Proven Superiority Over Traditional Training
Backed by studies like the ACE Fitness research, ARX delivers the safest, most effective resistance exercise using principles of constant velocity and maximal concentric/eccentric efforts. You get 40-50% more resistance on the eccentric phase with zero injury risk.
Learn the Data
Live curve (colored line): Your current rep's force output as you perform it—rising during the concentric (muscle-shortening, e.g., pushing up) phase and potentially higher in the eccentric (muscle-lengthening, e.g., lowering) phase,
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Comparison curve (gray "ghost" line): An overlay from your previous workout (or a selected past set).
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Peak Force: The maximum force you hit in that rep
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Total Output (or Work): Cumulative force across the set.
Rep Speed (or Velocity): How fast you're moving (e.g., inches per second). ARX controls this to ensure consistent tempo, preventing cheating with momentum.
Range of Motion (ROM): Distance traveled in the rep (e.g., full extension from 0-12 inches), ensuring proper form.
Time Under Tension (TUT): Total time your muscles are working against resistance in the set, a key indicator of intensity.
Intensity/Fatigue Percentage: A progress bar or number showing how close you are to muscle failure.
OMNI LIFTS
ALPHA LIFTS
Leg Press
Chest Press
Row
Calf Raise
Torso Flexion
Torso Extension
Belt squat
Deadlift
Romanian Deadlift
Calf raise
Pull down
Pull Over
Row
Overhead Press
High Pull
Horizontal Press
Decline Press
Incline Press
Pec Fly
Triceps Pulldown
Bicep Curl
Hamstring Curl