Lifespan TR1200-DT3 Treadmill Review

The Lifespan TR1200-DT3 is an innovative treadmill designed to fit underneath your working desk at home or in the office. The design features a treadmill base and belt and a small, compact console that can sit easily on your desk without getting in the way. The product boasts; Bluetooth Integration with the Computer Fitness App ‘Lifespan’, Deck suspension, Intelli-guard and Intelli-step features and five useful console readouts.

At just under $1000 dollars, how useful is the Lifespan TR1200-DT3 at keeping you active while you work?

Dimensions & Technical Specifications

  • 70.5″ L x 29″ W x 9.5″ H (179.1cm W x 19.3cm W x 24cm H) Deck
  • 12.5” W x 3” D x 2” H (31.75cm W x 7.6cm D x 5.1cm H) Console
  • 20” W x 56″ L (50.8cm W x 142.2cm L) belt size
  • Treadmill weight 131 lbs. 59.4 kg)
  • Console weight 3 lbs. (1.36 kg)
  • 350 lbs. (158.7 kg) maximum user capacity

Key Features

Bluetooth Integration with Computer Fitness App

The TR1200-DT3 is Bluetooth-enabled to wirelessly sync your activity data to your Windows or Mac computer with our free downloadable computer app. Track steps taken, walking time, calories burned and distance traveled all on your computer screen as you walk. Once complete, sync your data with your online LifeSpan Fitness Club account to record your walking history.

Treadmill Fits Under Your Existing Standing Desk

The TR1200-DT3 is designed to work with most standing desks. Simply place the console in a convenient location on your desk and plug the opposite end into the front of the treadmill and its ready to go. The TR1200-DT3 gives you the flexibility to choose the desk you want or use a stand up desk you already own and turn your standing desk into a walking desk. When selecting a desk, remember that a treadmill is approximately 4.5” of additional height above the floor so make sure the maximum height will support your needs plus 4.5”

Small, Contemporary Console

The small, contemporary designed console is 12.9” L x 2” H x 3.25” D, the perfect size to discretely sit on your desk so it will not get in the way of your work. The digital LED display shows steps taken, walking time, calories burned, distance traveled and walking belt speed. The weighted console has a safety key that shuts down the treadmill when removed

Deck Suspension Absorbs Foot Impact

LifeSpan treadmills use 6 independent shocks to hold the walking deck above the frame and absorb impact when your foot strikes the belt. If you plan on walking 10,000 or more steps a day, which we recommend, a good deck suspension will allow you to walk longer with less fatigue and without causing joint pain or injury.

A side benefit to isolating the deck with this type of suspension is a much quieter walking experience because the impact of your foot hitting the deck doesn’t resonate to the rest of the treadmill.

Intelli-Guard™ and Intelli-Step™

The TR1200-DT3 comes standard with two of LifeSpan trademarked technologies: The built-in Intelli-Guard™ automatically stops the belt if you step off during your walk for added safety and is a major development in protecting treadmill users and those around them. With the Intelli-Guard™, you no longer have to worry about leaving your treadmill running if you have to step off to take a call. When your foot no longer continuously strikes the belt surface for 20 seconds, your treadmill will automatically pause. Intelli-Step™ counts and records the number of steps you take and displays them on the console. More accurate than a pedometer, Intelli-Step automatically detects the impact of your foot striking the treadmill belt.


As this piece of equipment is designed to be used in a potentially high stress environment, it is essential that it is comfortable to use.

If you have never used an under desk treadmill before you will find it takes a little bit of getting used to in the way of typing and using the mouse while moving on the treadmill. Other than that the machine fits comfortably underneath the desk and feels secure underfoot. Although Lifespan boasts 6 independent shocks to absorb impact while you are walking, the belt does not feel as comfortable as it could. Although you don’t want too much spring in your step you do want to feel able to walk slowly on this machine all day long so belt cushioning could have been a really useful addition to the comfort features of the TR1200-DT3.


The performance features on this treadmill are not intensity related and instead reflect an ability to improve fitness at a steady level, over time while you work. As the machine only goes up to 4 mph it isn’t designed to work your body like a full capacity treadmill does, but it is designed to increase your steps per day and keep your body moving at work rather than it remaining seated and sedentary. This is why the Intelli-Step feature on this machine comes in so handy as it literally is designed to be a detailed, precise step counter that will enable you to track your steps per day and see how much you have progressed over time. The console does also allow you to track Distance Travelled, Calories Burned, Time, Step Count and Belt Speed.

The advertising mentions the Wireless Bluetooth Sync with the Lifespan Fitness Club as a key feature of this machine. Although it has the potential to be a useful feature, the Lifespan Fitness Club is a little old fashioned in its design and facilities. The biggest problem is that you can’t sync your results to a smartphone app which is the way most modern users prefer to interact with technology. The bluetooth isn’t always reliable and some of the features of the ‘club’ are a little patronizing if you are anything more than a fitness beginner.

Aside from Lifespan, the belt is well designed to give you the ability to walk and type/ talk/ call with no issues at all.

Ease Of Use & Convenience

There are three major issues with this product that are highly inconvenient.

The first issue is the weight of the treadmill, which is really heavy considering what it is being used for. Of course you need it to be sturdy but it isn’t being used for running and you’re also meant to easily slide it under a desk. Unfortunately it isn’t easily slid anywhere which is quite a design flaw when it is more than likely going to be moved around from time to time.

The second issue is the fact that the product beeps incredibly loudly which is something that can be heard if you’re on the phone and is a little embarrassing for a client to hear. The manufacturer has stated that this can be disengaged in the engineering mode, details of which can be found in the owners manual.

The third issue is the biggest gripe if you jump on and off your treadmill throughout the day; the fact that the safety feature ‘Intelli-guard’ stops the machine from moving after 20 seconds of non use. This means you have to start right from scratch every single time you get on the machine as there aren’t any quick key options. The manufacturer states that this feature can also be disengaged using the engineering mode, but it is not recommended.

The biggest design plus would have been a quick key, enabling the user to move straight back into a certain speed without having to work all the way up to top speed all the time.


There is no entertainment on this machine as it is designed to be used while you work.


Warranty is based on 6 hours per day average usage:

  • Frame: Lifetime
  • Motor: 3 Years
  • Parts: 2 Years
  • Labor: 1 Year

The Final Verdict

There’s no doubting that the $999 dollar Lifespan TR1200-DT3 is an innovative and useful machine designed to enable workers to stay fit and healthy during the working day. However, it’s not particularly sharp or intelligent in its design and with a few tweaks it could have been a lot more accessible to it’s key demographic of users.

At $999 dollars there are just too many design flaws to justify the price. It is reasonable but certainly not the most impressive of work based treadmills available at this price point.


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