A250 Lower Back
Keiser’s A250 Lower Back differs from any of its competitors on the market. It focuses not only on building muscles, but also protecting them. Unlike conventional machines that use iron, the A250 Lower Back’s low‑inertia design gives you a smooth resistance. This can help protect joints and connective tissue from shock loading. The result is a safer workout. And it’s perfect for people at any fitness level — from older adults to elite athletes.
Features
- Bilateral movement to train muscle symmetry
- Cost‑effective way to provide strength training options
- Large digital display that shows resistance, sets, repetitions, and peak power
- Thumb buttons let you change resistance without changing position — even during exercise
- Fast, easy, and precise eccentric overloading
- Change resistance in increments as small as one pound
- Industry-leading lifespan and uptime for years of use
- Unique versatility; five ways to train instead of only one
- Fully adjustable to accommodate a wide range of users
- Thick base for added stability
COMMERCIAL-GRADE WARRANTY
We proudly stand behind the workmanship of our machines
COMMERCIAL-GRADE WARRANTY
We proudly stand behind the workmanship of our machines
Why choose the A250 Lower Back?
Lower risk of injury. Pain-free range of motion.
The A250 Lower Back uses more resistance where you’re stronger and less where most vulnerable to injury. And the low inertia of our resistance eliminates dangerous shock loading on muscles, connective tissues, and joints. This significantly lowers the risk of injury and pain during exercise.
Keiser’s low‑inertia resistance is best understood when you experience it for yourself — and you can. One of our Demo Vans will meet you anywhere that is convenient for you in the US or Canada. Try it for yourself.
Achieve your training goals faster
Our machines increase resistance where you’re stronger and decrease resistance where you’re weaker. This allows your muscles to work at their full potential through every point in the range of motion.
Keiser’s machines focus on efficiency. The goal is to maximize your workout with fewer reps, so you spend less time working out and more time living.
Train at any speed — unlike conventional equipment
Unmatched versatility to achieve any goal
Control Resistance With Digital Convenience And Precision
Change resistance during exercise without stopping.
Convenient resistance controls are perfect for quick, precise, eccentric overloading.
POWER DISPLAY
Get instant feedback for testing and evaluation. The Power Display shows:
- Resistance level in (lbs. or kg)
- Sets
- Repetitions
- Peak power produced on each repetition
- Percentage of peak power
- Adjustment positions
Six-repetition Peak Power test calculates the resistance at which you achieve maximum power. Clear, one-inch numbers can be seen from a distance.
CHIP SYSTEM AND INTEGRATED TECHNOLOGY
Your electric workout card remembers and displays your previous workout:
- Resistance
- Sets
- Reps
- Adjustment Positions
Use Keiser Chip System with the Keiser Integrated Technology to download your workout on your phone, tablet, or computer.
Clear Advantages for your Business
Health Clubs
Attract more members and improve retention with more ways to train.
Sports Performance
Strength at speed: Train explosive movement more safely.
Medical Rehab
More visits, better outcomes, improved patient experience.
Older Adult
Keiser works for every level of fitness and will make your facility stand out.
Clear Advantages for your Business
Health Clubs
Attract more members and improve retention with more ways to train.
Sports Performance
Strength at speed: Train explosive movement more safely.
Medical Rehab
More visits, better outcomes, improved patient experience.
Older Adult
Keiser works for every level of fitness and will make your facility stand out.
Specifications
Lightweight
Easy to move when you need to change your floorplan. Place machines in locations where weight may be a concern (mezzanines, cruise ships, etc.).
Compact Footprint
Helps you make the most of your available floorspace.
A) WIDTH: 32”/813 MM
B) HEIGHT: 49”/1245 MM
C) DEPTH: 54”/1372 MM
WEIGHT: 151 LBS/69 KG
RESISTANCE: 0 – 272 LBS/0 – 123 KG