Shopping for a Treadmill? Here's What You Need to Know! (Part 4 of 4)

-Bryan Shutts

Getting a late start? Be sure to check out Part I, Part II and Part III first!

Welcome back for the final installment in our four-part Buyer’s Guide to help you find the perfect treadmill for the home!


In Part I we explored the frame and the motor. In Part II, we talked about the deck, belt and the rollers. Part III covered the lower electronics board and the incline motor. Part IV is going to be a thorough and comprehensive breakdown of the electronics and bio-mechanics.

Also, just to reiterate: The intention here is to be as comprehensive and as thorough as possible. There is no agenda here to sway you toward or away from one brand or manufacturers, and any personal opinions I express are not necessarily reflective of G&G Fitness Equipment or any of its brands or employees. Also, I am not being compensated in any way by any specific company or manufacturer to write this blog.


About eight to ten years ago, and decades before, treadmill electronics were much more similar from brand-to-brand than they are today. For the most part, treadmill manufacturing companies incorporated a limited number of workout programs, user profiles, heart rate features, and minimal, bare-bones entertainment features (think headphone jacks and speakers). You would typically find display types to be limited to an LED dot-matrix display or a backlit LCD screen. Each console would have a certain number of workout programs to choose from, and that was pretty much it.

Nowadays, treadmills have exploded into a disorienting array of features designed around making the treadmill as personalized as you need it to be. This is awesome! But it can also be somewhat of a bad thing. Let’s take our time and explore it.

Most importantly, it is good, because now you have so many more tools at your disposal to reach your fitness goals more efficiently than ever; whether they are motivational features, entertainment options or sport-specific workout programs based on highly vetted and proven scientific methods of exercise.

It is bad, because now there is so much more to choose from, and so many polarized differences. It can be confusing. Not to mention, if you are really going to do yourself service, you will discover very quickly that more time is going to be needed from you to sift through research and reviews in an effort differentiate all those options out there. Not only that, but you will have to narrow down what you need, what you don’t need, and what you may not even know you need or don’t need. But how will you know that you need something if you are oblivious to not even knowing about it? Confused yet? Don’t worry, it’s simple. And we will come back to it.

It is also bad for another reason – and this one is tricky. Let me first just preface this and profusely express that my intentions and goals here can be summed up with three simple statements: 1) I am going to be honest with you. 2) I am going to be objective with you. 3) I am using my training and experience to give you the best advice I can, so you will have the tools you need to make an informed decision when purchasing a treadmill for your home.

I say it is tricky because of this: there’s a lot of information out there I simply do not have access to, and subsequently do not know. So, I acknowledge that my opinions in certain areas – based on training and experience – are lacking. I will always support any opinion I make with some form of evidence or logical reasoning, instead of arbitrarily throwing out statements with little to no substance. And I am steadfast in remaining open-minded. I will be the first person to tell you I was wrong about something if you can present to me a valid argument or opinion strongly enough to sway me.

So, are you wondering what I am getting at? Begging me to get to the point?

Here it is: technology. This is an interesting time we are in, and I would be remiss not to acknowledge it. If you don’t believe me, just look at some of the companies that are putting 32-inch HDTV’s on their bikes and treadmills and charging subscriptions for their content (you probably don’t have to look far, their advertisements likely show up on your social media feed several times per day, every day).

Now don’t get me wrong. I am not accusing any company of practicing in “planned obsolescence.” No, I am sincerely too idealistic to do such a thing. Rather, I am simply exercising caution as we see this technological shift in the fitness industry happening before us. And it is a valid concern.

If you don’t believe me, here’s a test: look around your house. Do you have a computer at home, that is your primary computer, that is more than six or seven years old? How old is your current smartphone? What is currently your primary method of listening to music at home, while cleaning around the house? What would your answer to this same question be five years ago? Five years from now?

Now don’t get me wrong, I think the good far outweighs the bad. There are so many possibilities today! In fact, the elliptical trainer I tend to gravitate to most often for my personal workouts has a 16” high definition display on it. Watch Netflix? Check. Virtual destination courses? Check. Social media features? Check. I love it!

So, I ask you, curious reader, to empathize with me for a moment, and put yourself in my shoes. I promise, it will help you understand:

  • First, it is my goal to help you find the perfect treadmill for your home that meets your needs; nothing more and nothing less. This involves a dedication to keeping your cost of ownership as low as possible. That’s very important to me. Remember, the cost of ownership is not just your initial investment, but also the investment(s) you will make over time to own and maintain your treadmill and keep it going for years and years.
  • Second, I absolutely love all the exciting technological features currently available. And I have no clue how these technologies affect your cost of ownership over the long term.

My point is this, and this alone: the components of premium treadmills that are manufactured today by elite companies are designed to last 20+ years. Will the electronics and content provided  last that long as well?


Let’s tackle this technology thing head-on. After all, this is a Buyer’s Guide. The goal is to keep it simple and transparent. Let’s break it down so that you will be able to take this information and formulate your own opinions and arm yourself with an objective assessment of the current treadmill market. Remember, the focus right now is technology (which is not limited to just treadmills).

A few years ago, there was a divide. At first, I thought there were only two, simple paths: some treadmill manufacturers chose to embrace technology and go “all-out” with integration, while others held back and kept their machines more simplistic. This was an incorrect assessment.

No, I have discovered there are indeed four directions to choose from, like the points on a compass. Let’s have some fun and break down each category. Just like anything else, there are pros and cons for each. It’s not my job, or my intentions frankly, to persuade you that one is better than the other. But I am also going to be honest, and with honesty comes both the good and the bad. Not only that, but what works for me and what works for you are highly unlikely to be exactly the same. Do you agree?

I try to stay vague with specific brands or companies to remain as neutral as possible, however we are going to make an exception this once and use specific companies as examples for each category. Like I said earlier: it’s a Buyer’s Guide.

Now imagine that you’re standing in the middle of the treadmill market. Which direction will your technology compass guide you?


The “Motivators” are what I consider to be premium fitness equipment manufacturers who use technology as a tool, but it is not their primary selling factor. Their chief concern is the manufacturing of a quality treadmill (and to be competitive with both quality and price in the premium treadmill market, dancing a delicate balance) however they have also embraced the idea that the average treadmill owner will highly benefit from having sophisticated technological options integrated right on the treadmill itself. For the most part, they aim for ease of use and a simple interface but offer an abundance of options. We are talking a lot of options here.

The idea is straightforward: no excuses. If your excuse is that the treadmill is boring, they have an answer for that. If your excuse is that you are busy and don’t have much free time, they have options around that. If your excuse is that you don’t have the motivation, they have a solution for that. By combining these options with a quality piece of equipment, the entire burden of responsibility to use the treadmill regularly falls solely on the owner. No more excuses about why your treadmill isn’t going to work for you today.

In addition, these premium companies will typically not offer any content that requires a subscription from the user.

A good fit for: people who love tech, who are busy, who need motivation, who require entertainment to keep them going, who tend to make excuses, who need accountability

Example(s): Matrix Fitness T50 XIR


The “Innovators” also believe that technology can be a powerful tool, however they take a drastically different approach to that idea. Rather than full, complete integration proprietary to the treadmill itself, their designs are based around their residential treadmills working in tandem with the devices you already own, such as your smartphone or tablet. They usually execute this in one or two ways, if not both: via Bluetooth or a USB cable.  They will typically have their own proprietary fitness apps that you can download for free that work in sync with your piece of equipment. Those apps can subsequently be “daisy-chained” to other popular fitness apps if desired.

I remember having a conversation with someone high-up at one of these companies, and it is worth paraphrasing here, because it was a fantastic explanation and a true insight into their design and idea processes. This is what they said:

“We aren’t a tech company. We are a fitness equipment company. If we start to put money, time and effort into making tech, all it will do is drive up the cost and take away from the quality of our equipment . . .equipment that we take so much pride in. Sure, we can make a big touchscreen on our residential treadmills. That’s easy. We already do it on our commercial treadmills. But it would cost our customers around $1000 extra. Our customers can buy a tablet for $99. Let’s just make our treadmill will work perfectly with that.

What’s the point of watching the news on a $1000 15-inch touchscreen on the treadmill if our customer already has a 60-inch TV mounted to their wall in the same room? We are not going to try to replace the devices that our customers already own, but rather make our equipment work seamlessly with them. And save them some money without sacrificing quality at the same time.”

There’s another bonus to this method of manufacturing: not being tethered down to your home treadmill only. If you travel a lot for business, or if you still like to go to the gym, all your workout data is stored in the cloud via your phone or tablet. So just take it with you and sync it up with a treadmill at the gym. In a lot of cases, you can do the same program(s) you do at home.

A good fit for: People that already own tablets or smartphones, that travel, that want the best reliability available, that want a low cost of ownership

Example(s): Precor TRM445, Life Fitness T5 Track Connect


The “Content Providers” are the antithesis to The Innovators. All the cost goes into the technology and content services, and the equipment is just a necessity (that is not going to have the components we have discussed in Parts I, II and III of this Buyer’s Guide).  These are the companies that tend to do the most advertising, and they will also have subscription fees. They offer live class services, as well as other coaching features. You will typically see much larger display screens on their equipment. These companies are an elusive breed; it can be difficult to try one of these products out in person before you decide to purchase. Many times, you can only purchase by phone or online. They gamble on their aggressive marketing and infomercials to sell you their product(s).

You will never find these brands in specialty fitness stores. You will also not see them in gyms or health clubs. It is my opinion that three very important things separate premium quality fitness equipment from the big-box, department store and infomercial “content providing” brands: 1) quality, 2) bio-mechanics and 3) you can try out every product in a specialty showroom.

I said it in my elliptical blog and I will say it again here: when a company knows that their chances of selling their products actually decline when an informed consumer goes to the extent of trying out their products before making a purchasing decision, they will do everything they possibly can to get that person to buy it before they try it. They must entice you to their products somehow. And right now, they are marketing and selling you technology.

Why call them The Content Providers? Because that’s a sincere, genuine nomenclature. When you purchase this type of machine, you are paying for the experience more than the actual quality of the equipment itself (and the sum of its components).

The Content Providers are the sole reason why I said earlier that the influx of technology in the market can be a bad thing. It has grayed the line of what is a quality product. Quality used to be a primary focus, as well as service, reliability, and local support. These are things that the Content Providers aren’t going to brag about, and they are slowly starting to be discounted. That, in my opinion, is a shame.

Now I made a promise to be honest and objective with you, and I intend to keep that promise. I would be lying if I told you that these new content services weren’t popular and, in their own niche way, intriguing. I get it. I have had a handful of discussions on the subject, with both clients and colleagues, and I would be happy to discuss it with you as well. Feel free to call or email me. If you find value in those experiences they are selling you, who am I to judge? Go for it! But, before you commit, please do yourself a favor and ask yourself these standard questions:

  • How much is delivery/installation? Comparatively?
  • What do I do if I need service? If something breaks?
  • What if I want to return it? What is that procedure exactly?
  • What happens if I cancel my subscription?
  • Is this treadmill good for my body?

Just remember: you get what you pay for. If you have read Parts I, II and III of this Buyer’s Guide, you know what to look for in a quality treadmill. You have everything you need! Formulate your own opinions.

A good fit for: People not too concerned about quality, need social interaction and motivational coaching in the comfort of the home, willing to pay a subscription fee

Example(s): Peloton, NordicTrack


The “Bystanders” are the companies whose treadmills are not technologically-centric, primarily to keep the cost down. They are usually going to have an LED dot matrix display, with basic functionality and options. They might have an LCD screen, but I wouldn’t bet on being able to watch TV on it. Sometimes, these treadmills will have speakers, as well as a 3.5mm stereo input for a music player. They will still have workout programs on them, such as Random, Hill Climb, Interval, etc. Some will have wireless heart rate telemetry, and others will not.

There are quite a few brands out there that are still basic and fall under this category. Basic isn’t a bad thing. After all, the less there is, the less there is that can go wrong, right? Well . . . that is debatable. I would bargain that more quality components will outlast fewer inferior components, but I digress.

For the price-conscious shopper who doesn’t want to spend more on features that they will never use, these treadmills can hold up extremely well. Let me put it to you this way: If I were shopping for a treadmill and my two choices were:

  • Treadmill “A,” which has a 32” high definition touchscreen and a 2 HP peak motor
  • Treadmill “B,” which has a primitive LED dot matrix display and a 3 CHP motor

I would choose Treadmill “B” every time. You know why? Because if Treadmill “A’s” cheaper peak motor burns out on me, that 32” touchscreen is worthless!

I’ve said it before, and here it is again: a treadmill is as good as the sum of its components.  

A good fit for: someone who is price conscious, who doesn’t need motivated, who doesn’t need a lot of variety, who isn’t going to be a high-mileage user

Example(s): Horizon Fitness Elite T5


Remember that confusing bit earlier? I asked you how you would be expected to know that you needed something if you were oblivious to not knowing? I said it was simple and it is. The key is making a free appointment and speaking with a fitness consultant. It would really benefit you to stop into a local showroom and have a conversation with one of us. Stop in sometime when you have the extra time and you aren’t in a hurry. Fitness consultants aren’t in a hurry to get you in and out. We are an enigmatic breed and we are intrinsic; we genuinely enjoy helping you reach your goals. We LOVE to talk about fitness, and we LOVE to talk about you. We listen to you, and we give you the expert advice you can’t find on the internet or in the department stores. We are trained to put ourselves in your shoes and using our knowledge and expertise, help you make decisions that are best for you. Most importantly, we help you find those things you don’t even know you need.


Sit down and strap in. Now we are at the end. But we still have a long way to go. Make no mistake, we have saved the best for last. The bio-mechanics on any stationary piece of cardio equipment should be one of the most important (if not the most important) considerations of your buying experience.

First things first. What is bio-mechanics? In this context we are referring to treadmills, and the bio-mechanics on treadmills are simply the components of the machine that are designed solely around protecting your body from injury. The two main aspects we are going to explore are the impact control systems and shear stress reduction.


The Impact control system, also known as the shock absorption system, can be described in many ways. The impact control system is the combined components of the treadmill that provide the “cushioning,” and overall shock absorption. It is what is going to make the treadmill feel comfortable and consistent as you continuously plant your foot, shift your weight, push off your load, and then plant your other foot. 

Remember this?

In Part II, we were talking about the quality of the components of the treadmill . . . specifically, the deck. We discussed how the deck of the treadmill responds to the abuse that a human body can subject to it when running, like a jack hammer.

The deck isn’t the only thing that is taking on abuse; your body does too.

Years and years ago, before 1990, when Precor released the first treadmill that had a cushioned deck, treadmill manufacturers simply used wood decks that flexed under the user’s weight. These decks would intentionally bow and flex with every step. The idea was that the deck would have “give,” and would be easier on the users’ knees when compared to a deck that is stiff, rigid and hard to run on.

Fair enough, but there was a fundamental problem with this idea, and it was a problem big enough that it required engineers at Precor to find a solution for and fix.  We talked about it in briefly Part II if you remember, and that is what is commonly referred to as the “diving board” effect.

The deck moving downward with your stride as you plant your foot wasn’t the primary issue. It was the deck bouncing back upward after a user pushed off. If you recall, most treadmill decks are secured to the frame at each end with bolts. Simply put: the more freedom the deck had to flex downward, the more intense it would snap back upward. Remember that every action has and equal and opposite reaction. This was jarring on the knee, because it was a repetitive and unanticipated force in the opposite direction of the runner:

Think about it this way.  When you were a child, did you ever jump on a trampoline? Most of us did, right? When you jump on a trampoline, while you are in the air - after the initial bounce - the trampoline bed has enough time to spring back to its normal position after having flexed downward under your weight and then back upward after you push off. Jumping on a trampoline isn’t exactly easy on your knees to begin with, but at least each jump will be consistent and with no opposing force underneath you. Do you follow me?

The problem with running on a treadmill however, is that runners aren’t normally keeping a neutral, consistent load and hopping on one foot when they are running. No, just as soon as a treadmill user pushes their weight off their back foot, they shift their weight and their other foot is planting down in front immediately after.

So, running on a treadmill is more accurately analogous to jumping on the trampoline with a friend in disunity; that is, out of sync. Just like juggling two balls. Do you remember doing this as a child? It was fun, but it was also a little intense. When you are on the trampoline and your childhood friend jumps up immediately before you come down, the trampoline bed hasn’t had time to spring back to its normal resting position, and subsequently you are coming down right when it is flexing back upward, “springing” you higher up into the air.

That is more like running on treadmills with decks that flexed upward and downward, and it was not ideal for long term use. Orthopedic concerns varied, and one worry was exacerbating the users’ susceptibility to repetitive motion injuries.

Now I understand that trampoline beds and treadmill decks aren’t the same thing, but you must remember that we are talking about treadmill manufacturing before 1990, and a lot of these treadmill decks were designed to intentionally flex under the user’s weight.

So, in 1990, the Impact Control System was born, and premium treadmill manufacturers have since used rigid and stiff Medium Density Fiberboard (MDF) decks, with different types of shock absorption systems on the underside. The very first cushioning system introduced by Precor was very basic, but it did the job. And similar systems are still commonly used on treadmills today.

These systems consist of elastomers that are secured to the deck into a grommet, and they are fixated in the empty space between the deck and the frame. If you fold or lift any treadmill in a department store, chances are this is what you are going to see:

These elastomers are typically going to be evenly spaced out, and they will run parallel on both the left and right side of the deck. Some treadmills will have three elastomers, some will have four. Elastomers also vary in size; some have a very small diameter and others are much larger. Some treadmills will use the same elastomers altogether throughout the deck, and some treadmills will have different elastomers that are firmer or softer at different positions on the treadmill.  Obviously, my crude example here is not an accurate representation of size, but you get the idea:


While elastomers will vary in size, softness and placement from company-to-company, the central idea is the same: these elements absorb impact by compressing vertically downward and then immediately returning to their natural position in anticipation for the next footfall. These elastomers are usually very durable and will maintain their optimal “elasticity” over the lifespan of the treadmill. They are tried and tested, and they rarely fail. They were (and still are) a significant improvement over wood decks that flexed, and in 1990, this type of cushioning system was state-of-the-art and changed the treadmill market forever; a treadmill user could have a more rigid, durable and stable deck under their feet, but also have a form of impact absorption – as opposed to flexion – to protect their joints.

Still, this was 28 years ago, and while most treadmills in the department stores are still using these systems and advertising them as state-of-the-art (and simultaneously being highly recommended on phony, paid review sites), premium treadmill manufacturing companies have come a long way with improving their impact control systems and do things a bit differently now. But before we get there, let’s explain why they would.


First, a general rule of thumb is that the more consistent a treadmill feels under your feet, a more comfortable experience you will have, not just during a single workout, but for years and years of using the treadmill.

One problem with this standard cushioning system that is still commonly used today, is that the elastomers are evenly spaced out under the deck, with empty space between.

Look at our illustration again and notice the position of our runner.  In this example, he or she is planting their right foot almost directly on top of the elastomer in the treadmill’s “strike zone.”


Now for the sake of this example I am just going to use an arbitrary number and say that this specific treadmill company advertises that their cushioning system has 20% shock absorption. Assuming that information is trustworthy, it would be fair to say that this runner was provided about 20% relative absorption on this footfall, because they made impact directly on the absorber.

Now stay with me here. The art of running is a series of planting, shifting, pushing and then planting again. Runners don’t “glide.” Running is violent. Now combine the rapid changes in a runner’s stride with the belt moving under their feet in the opposite direction, and it is highly unlikely that a user will strike the exact same position on the belt and deck every time they plant their feet. Look at where our runner’s very next step with their left foot has now landed:

What percent absorption did our runner achieve on that step? It is impossible to tell, but that isn’t exactly the point. The point is that this is a very inconsistent experience for a treadmill user. If the goal is for every step to feel the same, this design puts the treadmill user at a disadvantage.

Now, I am not simply being nit-picky. The reason why it is important to know this is because we are talking about these things in the context of using the treadmill multiple times per week, for years and years to come. Remember, at 6 MPH, we are talking 150 steps per minute!


Here’s another thing to ponder if you are shopping for a treadmill that has this type of system, and your primary concern is shock absorption. It is also a very important consideration if there are multiple people in the household that will be using the treadmill.

Reason number two is that these elastomers are fixated vertically, and they also compress vertically.

Now, that is exactly what they are put there and designed to do. And they do a good job. The issue isn’t whether they underperform or not. The concern is the relationship between the elastomers’ duty, and the way a human is designed to run.

When a person runs, they do not strike the ground at a 90-degree angle. It depends on a runner’s form and pace; however, they will usually strike their feet closer to a 50- or 60-degree angle:

Why is this important? Because the elastomers are designed to compress straight down, however the kinetic force applied to them is impacting down at a different angle.

Have you ever hit the head of a nail with a hammer, and it wasn’t quite straight-on? You accidently hit it at a bit of an angle? What happened to the nail? It probably bent, didn’t it?

Your elastomers aren’t going to bend like a nail, but they also aren’t going to compress as completely they are intended to do either. If the elastomers are designed to reduce impact by 40%, but that impact is traveling through the elastomer at a 50 degree angle instead of 90 degrees, and your feet strike the deck at a different place with each step, what percentage of cushioning are you actually getting? More importantly, how inconsistent is this?!?!?

Now, if you are still with me, you may be thinking to yourself, “well, why wouldn’t they build it like this then?”


That’s a great question. The answer is that it can be done better. Much better. Now, premium treadmill companies have gone in entirely new and exiting directions. Here we go!

DID YOU SAY DONUTS? (Life Fitness & Matrix)

The FlexDeck on Life Fitness treadmills, and the Ultimate Deck System on Matrix Fitness treadmills have similar shock absorbers. Gone are the vertical elastomers, and now instead, a hollowed-out oval is used, in the shape of a doughnut:



These absorbers are a significant improvement over the older elastomers for a few reasons. There is one really big difference though, and that is the fact that they are round.

Now, when our runner plants their foot on the belt, the oval absorber will more effectively cushion the blow because the spring itself is not designed to absorb energy at 90 degrees. Now, you are getting all of the benefits of what the absorbers can provide to you, as opposed to vertical elastomers, which only reduced the impact at a fraction.  In addition, because the spring is hollow, the user will experience significantly more cushioning. Life Fitness, for instance, advertises that their treadmills are 40% softer than grass.

These absorbers are designed to reduce impact significantly upon the user planting their foot, but also produce spring during the transition and push-off. This way, the treadmill won’t feel “spongey” under a user’s weight, and their rate of perceived exertion (RPE) is less likely to be artificially inflated.

Here’s an experiment that might help you understand. Take a cardboard tube from an empty roll of toilet paper and hold it vertically. Without crushing it, apply light pressure on both ends. See how much it will compress with a little bit of pressure. Now turn the roll horizontally and apply the same amount of pressure in the middle of the cylinder. Ask yourself this question: which direction is both easier on your hand(s) and on the tube? This is somewhat analogous to how Life Fitness and Matrix treadmills absorbers are different than the department store models.

All Life Fitness and Matrix treadmills are going to have similar shock absorbers on their entire treadmill lines. The Life Fitness T5 treadmill is a unique model, because it allows the user to adjust the level of firmness by shifting the Lifesprings either forward or backward. It has three settings: Hard, Firm and Standard. This gives the treadmill user(s) a great amount of variability to fit their preferences. It is one of the most popular home treadmills because of this feature.



GroundFX & Integrated Footplant Technology (Precor)

While Life Fitness and Matrix improved on a traditional design, using more appropriate elastomers that naturally cushion a user’s joints, Precor went an entirely different direction.

Now I am not going to tell you that one company is better than the other.  I am just going to relay some of my training I have been provided, and you can make up your own mind. In fact, I personally think every treadmill line on a G&G Fitness Equipment showroom has individual strengths above all the others. What matters most is what is best for you. Fitness consultants try to take the information you provide and address your needs and concerns. Different clients have different priorities, but the bottom line is this: there is always going to be the “best choice” regarding what is best for you, and we are here to help you figure it out.

Also, it should be noted (and I will be the first to admit) that I am more educated with Precor equipment than any other brand, simply because Precor invited me to tour their factories in Seattle and participate in their intensive Immersion Training. None of the other manufacturers have invited me to tour their facilities, so I am unable to be a primary source for you in that regard. With Precor, I can. I hope you will give me the benefit of the doubt and not confuse this with any personal biases I may have.

Make no mistake: Lifesprings and the Ultimate Deck System are a significant improvement over the older, antiquated design. They are light years ahead. Still, there are two primary things that Precor has taken steps to do differently and improve upon:

  • Hollow, oval springs will typically differ from user-to-user. A 250-pound heel-striker is going to produce and require more compression than a 130-pound midfoot runner.
  • These oval elastomers are still evenly spread out in the treadmill’s strike zone, with empty space in between.

Now what these two points also mean is that every step a user takes will be different, and that each user must adapt to the treadmill. Remember . . . a treadmill will be most comfortable when it is consistent. If you and I go out for a run on a bike path, the ground is going to feel the same for both of us A) because the bike path isn’t moving, and B) the bike path isn’t constricting under our feet.  The springs on a treadmill will feel different for us, however, because you and I are going to compress them differently.

So Precor’s objective is to make a treadmill that provides consistency; where every step feels the same, and every user has the same experience. Precor treadmills are designed around the treadmill adapting to the user, as opposed to the user adapting to the treadmill. They accomplish this in two ways: GroundFX and Integrated Footplant Technology (IFT), two systems that are unique to Precor treadmills.


Precor’s impact control system isn’t much like any of the others that we have explored in this buyer’s guide. Precor’s shock absorber is an 18-inch, hollow tube that is shaped like an arch, and it runs along the strike zone of the deck.

For starters, let’s just look at it in comparison:

Let’s run down the basic points as to why they do this:

  • IT HAS A UNIQUE SHAPE: It is shaped like an arch, for progressive impact absorption – to give each user just the right amount they need. Arches compress downward and outward, as opposed to only inward like other shock absorbers.
      • Thus, it also provides lateral stability, which also promotes variable impact absorption that is “personalized” for each individual user.
        • Because of this, every user gets approximately 38.6% absorption, regardless of height and weight difference!


  • IT IS LONG: Unlike smaller elastomers that are evenly spaced out, the absorber on a Precor is an 18-inch long tube that runs along the strike zone of the deck.
    • This way, no matter where you plant your foot, it will always be on the absorber, subsequently giving every footfall identical cushioning.
      • Thus, this helps solves the problem of the user’s foot falling in different places with each step, and having an experience where every step they take is different.


  • BUT WAIT, THERE’S MORE: Remember in Part II when we talked about decks that are bolted to the frame? Precor’s patented GroundFX cushioning system also includes a hinge at the back, so you won’t get that “diving board” effect. (If you need a refresher, read about decks in Part II here).
    • Because of the hinge at the back, it has a strong push-off. You don’t want a treadmill that has a soft push off. This is crucial, because when your foot sinks down as it pushes off, it requires more energy and increases your RPE and accelerates your fatigue.

In short, GroundFX is designed around optimal compression at the front and firmness at the rear to achieve the “sweet spot” in the balance between firmness and absorption. It also is adaptive to each user, as opposed to each user having to adapt to the treadmill.


FACT: When you walk or run, your speed is constantly changing with every step you take.

On most treadmills, when you plant your foot, shift your weight, and push off, you are interrupting the process of the motor turning the belt at a pre-determined and specific speed. Treadmills with DC motors that use PWM motor controllers (see Part I) account for this by sending a series of ON/OFF pulses to compensate for this.

While this is great for the life of your motor and treadmill, it isn’t so great for your knees. The reason is because this shear stress.

Think about this. When you run on a treadmill, you aren’t running in place (contrary to popular belief). You are moving forward, and the belt is pulling you back, so you can stay in place. Running in place is easy . . . you can stand up right now and hop back and forth on each leg and kick your heels up to your glutes. But people don’t invest in home treadmills because they have a desire to run in place, they want to run.

Therein lies the problem with shear stress. When you take a step and shift your weight to one side, the treadmill belt pulls you back before you can naturally push off. This isn’t a concern with running outdoors, because the ground isn’t moving. But during this process on a treadmill, some things commonly occur. Your tibia may kick back. Your femur may kick forward. Your ACL may stretch.

It may sound confusing, but it’s quite simple. On most treadmills, the belt will naturally “hiccup” under your load, simply because it is an unanticipated, perpendicular force. PWM motor controllers compensate for this by increasing the voltage to the motor to maintain a consistent speed of the belt. The side effect is that every time you take a step, the belt is speeding up immediately after that interruption.

There are other factors as well, such as having to adjust your stride to compensate for the belt moving in the opposite direction underneath you. When your planted foot is pulled back behind you, you must compensate. You do this by diving forward in front of your body. Consequently, you might not get your natural heel-lift that you are used to getting when you run outside, because you must come down and plant your foot again immediately before the belt pulls you off the back of the treadmill.

Next time you see someone running down the street, watch their stride. Are they diving out in front of their person? Are they not lifting their heels up? It is possible that they may be conditioned to running on a treadmill. Regardless, I think the shear stress of the belt pulling you back might make you more susceptible to shin splints more than impact would.

You can think of it as a game of “Would You Rather?” Ready? Here we go!

Would you rather:

  1. stomp your foot on a carpeted rug 100 times -or-
  2. stand on the rug and have someone jerk the rug out from underneath your feet 100 times?

What’s all this mean? It’s simple really. When you are shopping for a treadmill, you should be cognizant that there are two types of shock absorption: vertical and horizontal.

This is where Integrated Footplant Technology (IFT) comes in.

IFT recognizes each footfall and speed change and makes minute belt-speed alterations to compensate upwards of 710 times per second. What this means is the belt will appropriately and gradually decelerate in response to foot strike, and then re-accelerate properly with each push-off. There is a harmony there between the runner and the treadmill, to create a smooth and natural fluidity with their stride, which doesn’t pull. It’s quite the antithesis to most treadmills that speed up to compensate with each footfall, and you can see it work with your own eyes. 


Congratulations! You now know what to look for in a treadmill! I hope this Buyer’s Guide has been informative and will help you find the perfect treadmill for your home. I also hope that the information was presented fairly, and you can formulate your own opinions on what treadmills align with your needs the best. Most importantly, I hope that I have earned your trust!

If I have indeed earned your trust, then I have a reward for you for reading this four-part Buyer’s Guide.


Now it is your turn to find out what treadmill is best for you. My advice is to always speak with an expert fitness consultant face to face, but this brief quiz will absolutely give you a good idea of what treadmill is right for you.  The questions that you will answer are some of the most common questions that G&G fitness consultants ask daily. Your results will be specifically tailored to the answers you provide, so answer honestly!

Once again, thanks for reading!


About Bryan

Bryan has been with G&G since 2008. Along with experience as a personal trainer, Bryan has a BS in Education and is licensed to teach. He is an adjunct instructor for Wright State University. He has also taught grades 7-12... more about Bryan

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  • Hi Joe,
    Please email us at, or call or stop in to your local G&G Fitness Equipment showroom. Use our store locator here:


    Bryan Shutts
  • Looking for a treadmill with a table for my office

    Joe Cantafio

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