By Stephen Portee, MS, CSCS
There has always been an ongoing debate about machines in strength training. Some say they are not "functional." Others say you need to master bodyweight movements before you are allowed near one. On the other end, you will find facilities that rely almost exclusively on machines and claim they are the safest, most efficient way to train.
The truth, as with most things in fitness, is more nuanced. Let's look at the history, the actual benefits and drawbacks, and how machines can fit intelligently into a training program for active adults.
Strength training machines became widely popular in the mid-to-late 20th century, largely due to Arthur Jones, who introduced the Nautilus line of machines in the 1970s. His goal was to make resistance training more accessible and safer for the general public — not just elite athletes or bodybuilders.
The concept was straightforward: guide movement, reduce injury risk, and allow people to train effectively without requiring a spotter or significant coaching.
Since then, machines have evolved considerably. Today's equipment often includes adjustable seats, variable resistance, and ergonomic design intended to accommodate a wide range of body types and training goals.
Safety and control. Machines provide built-in safety features that make them particularly valuable for anyone returning from injury, new to resistance training, or training without a spotter. The fixed path of motion reduces the chance of losing control of the load.
Reduced stability demands. By removing the need to balance the weight, machines allow you to focus exclusively on the target muscles. For active adults managing joint pain or instability, this means you can train hard without placing unnecessary stress on sensitive areas.
Targeted muscle isolation. Machines are effective at isolating specific muscle groups — which is useful for addressing muscular imbalances or directing attention to an area that needs focused work. This matters more than the "machines vs. free weights" debate usually suggests: a 2023 systematic review and meta-analysis of 13 randomized controlled trials found no meaningful difference in muscle hypertrophy or jump performance between free-weight and machine-based training, and strength gains were specific to whichever modality someone actually trained on.[1] In other words, the tool matters less than whether you use it consistently. This is closely related to what actually drives results in the first place — a topic we cover in What Most People Get Wrong About Hypertrophy Training.
Time efficiency. Machines are quick to adjust, easy to set up, and ideal for circuit-style training or sessions where time is limited.
Accessibility. For those new to strength training or returning after a break, machines offer a more intuitive entry point. Most machines include diagrams and instructions, reducing the learning curve.
Limited stability training. The same feature that makes machines useful — removing the stability challenge — also means they do not train coordination, balance, or the interplay between muscle groups in the same way that free weights do.
Fixed range of motion. Machines operate on preset movement paths. If your anatomy does not match the machine's design, the result can be discomfort or a compromised range of motion. Real-world movement is rarely linear, which means machine-based training may not transfer perfectly to sport or daily activities.
Reduced functional carryover. Exercises that isolate muscles and remove stability demands may not translate as directly to real-world strength. A leg extension, for example, does not prepare you for climbing stairs the same way a squat or step-up does.
Machines are not better or worse than free weights. They are simply a tool — and the value of any tool depends on how and when you use it.
For active adults, machines can be a genuinely valuable part of a well-rounded program. Whether you are building strength safely, managing joint discomfort, or training around an injury, machines help you train effectively and consistently.
The goal is balance: combine machine work with free-weight exercises, bodyweight movements, and mobility work to cover all the bases — the same layered approach we walk through in How to Structure Your Workouts for Athleticism. The best training is the training that helps you reach your goals safely, effectively, and sustainably. Machines can absolutely be part of that.
Stephen Portee, MS, CSCS is the Managing Partner and lead strength and conditioning coach at Apollo Performance Chiropractic & Training in Pleasantville, NY.
