What Is The AlterG Treadmill?
Benefits + Target Areas
For body, mind, and recovery.
Enhanced Cardiovascular Fitness
Allows low-impact cardio, improving heart health without strain.
Sports Performance Training
Increases training volume with reduced injury risk, boosting athletic performance.
Reduced Joint Stress
Minimizes impact on joints, ideal for those with arthritis or joint pain.
Gait Screening
Built-in Stride Smart technology analyzes your walking and running mechanics, identifying asymmetries and movement patterns that inform your training program
Injury Rehabilitation
Supports gradual return to walking and running after injury, with precise body weight reduction.
Accessible Cardio
Reduces body weight by up to 80%, making walking and running comfortable for anyone regardless of size, age, or joint limitations.
Customizable Unweighting
Precise adjustments tailor exercise to individual recovery needs.
Safe and Controlled Environment
Safety features ensure a secure, confidence-building experience.
How Our Clients Feel About Us
Our environment, designed for longevity
Our Equipment
We built a toolkit, not a showroom. Every modality here was selected because the research backs it, then sourced from the providers who do it best. The same hard-shell hyperbaric technology used in clinical settings. The same anti-gravity treadmill trusted by professional athletes. That standard runs through everything we do.
Our Space
We designed Sisu around the belief that environment shapes outcomes. Intuitive flow between ten modalities, private changing areas, and a team present enough to guide you and experienced enough to get out of your way. This is what a serious longevity space feels like.
Our Amenities
Relaxation lounge, tea service, and hydration stations. We provide bench mats for every sauna session. Bring your own towel and robe, or pick up the real thing — we carry authentic Finnish sauna textiles in-studio. Private locker rooms and showers.
Dig in deeper with AlterG Anti-Gravity Treadmill in Colorado Springs
View our other modalities & services
Begin to Live Better ... Longer
Improved healthspan and longevity starts with showing up. Choose a membership tier that fits your schedule and build from there. Core sessions, Premium services and coached training are all under one roof.
Experience Sisu for Yourself
Come see it. Schedule a tour and try the space before you commit.
Frequently Asked Questions
General Questions
How often should I use the AlterG?
Recommendations vary by goal:
- Training supplementation: 1-2 sessions per week
- Active recovery: as needed after hard training
- General fitness: 1-3 sessions per week based on your goals
- For rehab-specific protocols, work with your physician or physical therapist.
How long is an AlterG session?
Sessions typically run 20-45 minutes depending on your goals and body weight setting. At lower body weight (50-70%), 15-30 minutes is a good starting point. At higher body weight (70-100%), sessions can run 30-45 minutes. Your first session includes a fitting and orientation with the equipment — plan for about 45 minutes total. Staff will help you find the right duration and body weight percentage for your goals.
Is this only for injured people?
Not at all. The AlterG is used by runners and athletes looking to increase training volume without added joint stress, by adults managing arthritis or joint pain who want to walk or run comfortably, and by anyone interested in understanding their gait mechanics through built-in Stride Smart screening. At Sisu, the AlterG is part of the Longevity Training Lab — it’s a performance and longevity tool, not just a recovery one.
Safety Questions
Is the AlterG safe?
Yes. The AlterG has been used safely in clinical and wellness settings worldwide for over 15 years. The enclosed chamber design prevents falls, and trained staff monitor all sessions. The technology was originally developed for NASA astronaut conditioning, meeting rigorous safety standards.
Can I use the AlterG if I have a pacemaker or metal implants?
Generally, yes. The AlterG uses air pressure, not electromagnetic fields, so metal implants and pacemakers are typically not contraindicated. However, we recommend consulting with your physician if you have concerns about any medical device.
Results Timeline
How soon will I see results?
Many users report immediate benefits from their first session — the ability to walk or run without pain is often profound. For rehabilitation and performance goals, measurable progress typically occurs within 4-8 sessions, depending on individual circumstances and consistency.
Will the benefits transfer to regular running/walking?
Yes — the gait patterns and cardiovascular fitness you build on the AlterG carry over to full-weight activity. The key is gradual progression
Contraindications
Who should NOT use the AlterG?
The AlterG may not be appropriate for individuals with:
- Uncontrolled cardiovascular conditions
- Unstable fractures or acute injuries requiring immobilization
- Open wounds on lower extremities
- Severe balance disorders without physician clearance
- Weight exceeding equipment capacity (400 lbs)