Key facts
- The ACSM says both free weights and machines are effective for strength, and advises novice to intermediate lifters to include both. 1
- A meta-analysis of 13 trials (1,016 people) found no difference between free-weight and machine training for muscle growth. 2
- In 24 resistance-trained lifters, cable and dumbbell lateral raises produced similar lateral deltoid growth over 8 weeks (3.3% to 4.6% thicker). 6
- In 11 volunteers, biceps electrical activity was higher in a dumbbell curl than in a cable curl at 80% of each lift’s one-rep max. 5
Is a cable machine better than free weights?
The studies read for this page do not crown either tool. Trials that compare free weights with machines mostly find similar results for strength and muscle size. The differences that do show up concern which muscles work hardest in a given exercise, not who grows more over weeks.
The American College of Sports Medicine (ACSM) position stand on progression in resistance training says both free weights and machines are effective for increasing strength. For novice to intermediate lifters it recommends including both kinds of exercise (its evidence category A).1 The same document lists free weights, machines and cords among the ways to train.1
One caution before the details. Few trials name cable machines. Most compare free weights with “machines” as a group, and the cable-specific studies below each look at a single exercise in a small group. Treat them as pieces of a picture, not as a verdict.
If you want the equipment view first, see the guide to the home gym cable machine, or the hub on strength training and home gyms.
How the two tools compare, question by question
| Question | Cable machine | Free weights |
|---|---|---|
| Do they build strength? | ACSM lists machines and cords among effective modalities.1 | ACSM says free weights are effective for increasing strength.1 |
| Do they build muscle size? | Cable lateral raises grew the lateral deltoid 3.3% to 4.6% in an 8-week trial, similar to dumbbells.6 | Dumbbell lateral raises gave a similar result in the same trial.6 Free weights and machines did not differ for hypertrophy in a meta-analysis.2 |
| Which muscles work hardest? | In a row comparison, unilateral cable row activity was 50% to 57% of the free-weight row for the external oblique and 70% to 73% for the multifidus.4 Biceps activity was lower in a cable curl than in a dumbbell curl.5 | Free-weight rows gave more activity in several of the trunk muscles measured.4 Dumbbell curl activity was higher in the biceps.5 |
| Does the strength carry over? | Machine strength tests tended to improve more after machine training.21 | Free-weight strength tests improved more after free-weight training.21 |
| How hard to learn and spot? | ACSM notes that weight machines have been regarded as safer and easy to learn.1 | The NSCA position statement for older adults links safe training to technique instruction and proper spotting.7 |
| Space | The Chutex Model I is wall-mounted and needs a load-bearing wall.9 | No figure was read from a manufacturer for this page, so none is given. |
| Cost | The Model I price is shown in the box at the end of this page.9 | No free-weight price was read from a manufacturer today, so none is given. |
Table built from the studies listed in the sources. “Machines” in the ACSM and meta-analysis rows covers weight machines in general, and a cable column is one kind.12
Read the table as a map of what is known, not a score. A blank or cautious cell means no source read for this page answers the question.
What studies say about muscle activation
Muscle activation is measured with electromyography (EMG), which records the electrical activity of a muscle through skin sensors. Higher EMG during a lift means a muscle worked harder in that test. It does not by itself tell you which tool builds more muscle over months.
Rows: free weight, cable and machine
A study in the International Journal of Sports Medicine had 15 resistance-trained men perform a free-weight bent-over row, a seated cable row and a machine row, at matched effort, one arm at a time or both arms.4 In the one-arm cable and machine rows, activity in the external oblique and multifidus was 50% to 57% and 70% to 73% of the free-weight row.4 In the two-arm free-weight row, erector spinae activity was 34% above the two-arm machine row.4
The authors concluded that the free-weight row gave more activity in the lower back muscles than the machine row, and that one-arm work activated the external oblique more than two-arm work whatever the equipment.4 The seated cable row was not singled out for the erector spinae result.
Curls: dumbbell and cable
A 2025 study in Muscles compared a dumbbell biceps curl with a Bayesian cable curl, an exercise where the cable pulls from behind the body. Eleven volunteers lifted at 80% of their one-rep max (1RM) for each exercise.5 Biceps activity averaged 111.46% of a maximal contraction in the dumbbell curl and 93.39% in the cable curl, a significant difference.5
What these tests cannot tell you
- Each test used one exercise, one session and a small group: 15 men in the row study, 11 volunteers in the curl study.45
- In the curl study each lift was set at 80% of its own 1RM, so the absolute loads differed between exercises.5
- EMG shows activity during a lift. Growth over weeks needs a training trial.
- The row study measured trained men. Results may not match your age, sex or experience.4
What studies say about muscle growth and strength
Training trials are closer to what you care about. They put people on a program for weeks and measure the result.
Cable and dumbbell lateral raises
Larsen and colleagues, in Frontiers in Physiology (2025), had 24 resistance-trained men and women train for 8 weeks, two sessions a week, with five sets of lateral raises to momentary failure. Each person’s arms were randomly assigned, one to cable and one to dumbbell raises.6 The lateral deltoid grew 3.3% to 4.6%, and the statistics supported no meaningful difference between the two conditions.6 The authors concluded both are similarly effective for lateral deltoid growth in trained lifters.6
The paper’s conflict-of-interest statement notes that one author formerly served on the scientific advisory board of Tonal Corporation, a home-gym maker.6 That does not change the data, but it is worth knowing.
Free weights and machines, pooled
A 2023 systematic review and meta-analysis in BMC Sports Science, Medicine and Rehabilitation pooled 13 trials with 1,016 adults aged 18 to 60 who trained at least 6 weeks.2 Free-weight tests improved more after free-weight training, and machine tests tended to improve more after machine training. In direct comparison, the authors found no differences for dynamic strength, isometric strength, jump height or hypertrophy.2 They concluded the choice comes down to preference and goals.2
A randomized trial in the Journal of Strength and Conditioning Research (2020) put 46 young adults on free weights or machines for 8 weeks, each muscle group trained 2 to 3 times a week for 3 to 4 sets of 4 to 10 repetitions.3 Biceps and quadriceps thickness rose in both groups with no difference between them. Machine bench press strength rose 13.9% in the machine group and 8.6% in the free-weight group, while free-weight bench press and squat strength rose 11% to 19% with no group difference.3
Safety: what the sources say, and what to check yourself
ACSM notes that weight machines have been regarded as safer to use and easy to learn, and that they allow some exercises that are hard with free weights.1 A cable column is one kind of machine, so this applies in part to cables, though the document does not test cables on their own.
The NSCA position statement for older adults says a properly designed resistance program with instruction in technique and proper spotting is safe for healthy older adults.7 The Physical Activity Guidelines for Americans advise choosing activities that fit your current fitness, and raising the amount gradually, because injury risk relates to the gap between your usual level and the new one.8
Practical checks follow from those sources. Start with loads you can control. Warm up with lighter weight, which the guidelines describe as common for muscle-strengthening work.8 Use a spotter or safety stops for exercises where a failed rep could trap you, and learn the movement before you load it.
People with chronic conditions or symptoms should be under the care of a health care provider, and can ask a professional which types and amounts of activity suit them.8 The guide on how to start strength training covers that step in more detail.
Space and cost: what to add up
Neither space nor cost can be settled by a study. They depend on your room and your budget. This page lists only figures read from a manufacturer on October 16, 2026.
| Item | Cable machine | Free weights |
|---|---|---|
| Wall or floor | The Chutex Model I is a wall-mounted cable machine and needs a load-bearing wall.9 | Floor space for the lift, plus room to store plates and racks. |
| Load range | The Model I offers motorized resistance from 4.4 to 110 lb (2 to 50 kg).9 | Set by the plates and dumbbells you own. |
| Running costs | Check whether the maker charges a membership or app fee. | Plates and dumbbells do not need an app. |
| Upgrade path | Check whether the maximum load suits you after a year of progress. | Add plates or buy heavier dumbbells. |
Only the Model I cells are manufacturer facts, from Chutex’s own product data.9 The other cells are a checklist, not findings. For a full budget, see how much a home gym costs.
For machines that use cables and a motor from other makers, the dated comparison Tonal vs Vitruvian lists prices, subscriptions, maximum loads and mounting read from the official sites.
How to choose
Because ACSM recommends both kinds of exercise for novice to intermediate lifters, the useful question is which one you will keep using.1 These prompts follow from the sources above and are not a ranking.
| If this is you | What the evidence suggests | What to check |
|---|---|---|
| You want to build general strength and muscle | Both tools are effective, and pooled data show similar muscle growth.12 | Pick the one you will use two or three days a week.1 |
| You train alone in a small room | Machines are regarded as easier to learn and use.1 | Check the wall, floor and clearance the maker lists. |
| You want to improve a specific barbell lift | Strength is specific to the movement you practice.2 | Include that lift in your program. |
| You want to target one muscle, such as the shoulder | Cable and dumbbell lateral raises grew the lateral deltoid similarly.6 | Try both and see which you can do with good form. |
| You are new to lifting | ACSM notes that moderate loading has been suggested at first, while you learn form.1 | See how to start strength training. |
Not a ranking. The cells map stated findings to situations. Study details are in the sources.
Whatever you pick, progress matters more than the tool. The guide on progressive overload explains how to raise the load over time, and sets and reps shows how to count weekly volume. For exercises built around pulleys, see wall pulley exercises; for a wider look at connected machines, see the best smart home gym guide.
Frequently asked questions
Are cable machines as good as free weights?
For strength and muscle size, the studies read found similar results. A 2023 meta-analysis of 13 trials found no difference between free weights and machines for hypertrophy, and an 8-week trial found cable and dumbbell lateral raises grew the lateral deltoid similarly. Few trials test cables specifically.
Are cables better than free weights?
No study read for this page shows that. In small EMG tests, free-weight versions of a row and a curl produced more activity in some muscles, but activity during one session is not growth over weeks.
Cable machine or free weights for a home gym?
The ACSM recommends including both machine and free-weight exercises for novice to intermediate lifters. At home, the decision often comes down to space, budget and what you will use regularly.
Can you build muscle with only cables?
The lateral raise trial found cable raises produced growth comparable to dumbbell raises in trained lifters over 8 weeks. That is one exercise, so it does not show that cables alone cover every muscle.
Are cable machines safer than free weights?
ACSM notes that weight machines have been regarded as safer and easy to learn. A cable column is one kind of machine. Safety still depends on technique, load and progression, so start light.
Do cables work the core as much as free weights?
In the row study, one-arm cable and machine rows produced less external oblique and multifidus activity than the free-weight row. That is one comparison in 15 trained men.
Is a functional trainer the same as a cable machine?
Both terms are used for a pulley-and-cable station with adjustable handles. The studies read do not distinguish between them, so the findings above apply to cable exercises in general, with the limits stated.
Sources
- American College of Sports Medicine position stand. Progression models in resistance training for healthy adults. Med Sci Sports Exerc. 2009;41(3):687-708, PubMed, ACSM. Retrieved October 16, 2026
- Haugen ME et al. Effect of free-weight vs. machine-based strength training on maximal strength, hypertrophy and jump performance: a systematic review and meta-analysis. BMC Sports Sci Med Rehabil. 2023;15:103, PubMed. Retrieved October 16, 2026
- Schwanbeck SR et al. Effects of training with free weights versus machines on muscle mass, strength, free testosterone, and free cortisol levels. J Strength Cond Res. 2020;34(7):1851-1859, PubMed. Retrieved October 16, 2026
- Saeterbakken A et al. The effect of performing bi- and unilateral row exercises on core muscle activation. Int J Sports Med. 2015;36(11):900-905, PubMed. Retrieved October 16, 2026
- Parpa K et al. An exploratory study of biceps brachii electromyographic activity during traditional dumbbell versus Bayesian cable curls. Muscles. 2025;4(4):45, PubMed. Retrieved October 16, 2026
- Larsen S et al. Dumbbell versus cable lateral raises for lateral deltoid hypertrophy: an experimental study. Front Physiol. 2025;16:1611468, PubMed. Retrieved October 16, 2026
- Fragala MS et al. Resistance training for older adults: position statement from the National Strength and Conditioning Association. J Strength Cond Res. 2019;33(8), PubMed, NSCA. Retrieved October 16, 2026
- Physical Activity Guidelines for Americans, 2nd edition (chapters 4 and 7), Office of Disease Prevention and Health Promotion, health.gov. Retrieved October 16, 2026
- Chutex Model I US product page, specifications, Chutex. Retrieved October 16, 2026