For the gastrocnemius, the larger and more visible calf muscle, the standing calf raise is the better choice on current evidence. In a 12-week MRI trial of 14 untrained adults, the lateral gastrocnemius grew 12.4% on the standing leg and 1.7% on the seated leg.
The soleus, the deeper calf muscle, grew about the same either way. Below we cover what the trial measured, why knee position matters, what two later trials say about how to take standing raises, and how to program and log both versions so your own training history does the final judging.
Is the standing or seated calf raise better for calf growth?
The standing calf raise is better for the gastrocnemius and for total calf size. With the knee straight, the gastrocnemius is lengthened across the knee and ankle. In the best direct trial, that setup grew the gastrocnemius far more than the seated version, while the soleus responded similarly to both.
The calf (triceps surae) has two parts. The gastrocnemius crosses the knee and the ankle. The soleus sits beneath it and crosses only the ankle. That anatomy is why bending the knee to 90 degrees in a seated raise changes the job done by the gastrocnemius but not by the soleus.
Kinoshita and colleagues (2023, Frontiers in Physiology) described the calf as relatively unresponsive to resistance training, and set out to find which training position works best. Their conclusion was direct:
"Standing calf-raise was by far more effective, therefore recommended, than seated calf-raise for inducing muscle hypertrophy of the gastrocnemius and consequently the whole triceps surae."
Kinoshita et al., Frontiers in Physiology, 2023
What did the calf raise trials find?
Three recent trials are the closest evidence. One compared standing and seated raises directly. The other two both used standing Smith machine raises and compared ways of finishing a set. The table summarises each.
| Trial | Participants | Design | Result |
|---|---|---|---|
| Kinoshita et al., 2023 (Front Physiol) | 14 untrained adults | One leg standing, the other seated (knee at 90 degrees), 12 weeks, twice weekly, 5 x 10 at 70% 1RM, MRI | Whole triceps surae +5.6% standing vs +2.1% seated. Soleus similar |
| Larsen et al., 2025 (Front Psychol) | 23 untrained men | One leg sets to failure, other leg added past-failure partials in the stretched position, standing Smith machine, 4 sets twice weekly, 10 weeks, ultrasound | Medial gastrocnemius thickness +6.7% vs +9.6% with added partials |
| Eur J Sport Sci, 2025 | 23 resistance-trained adults (16 men, 7 women) | One leg initial partials in the stretched range, other leg full range then past-failure partials, standing Smith machine, 4 sets twice weekly, 8 weeks, ultrasound | Small difference favouring initial partials, with only anecdotal evidence |
Only the first trial tested the seated raise. The other two address a separate question: how to take standing raises close to or past failure.
Kinoshita's group measured each muscle separately:
| Muscle | Standing leg | Seated leg | Significant difference? |
|---|---|---|---|
| Lateral gastrocnemius | +12.4% | +1.7% | Yes (p ≤ 0.011) |
| Medial gastrocnemius | +9.2% | +0.6% | Yes (p ≤ 0.011) |
| Whole triceps surae | +5.6% | +2.1% | Yes (p ≤ 0.011) |
| Soleus | +2.1% | +2.9% | No (p = 0.410) |
How big was the difference in the standing vs seated trial?
Large for the gastrocnemius, absent for the soleus. Standing raises grew the lateral gastrocnemius roughly seven times as much as seated raises in relative terms, and the medial gastrocnemius even more. The seated leg's gastrocnemius changes could not be told apart from zero (p = 0.147 to 0.508).
Even the winning leg did not grow a lot. A 5.6% rise in whole triceps surae volume after 12 weeks is modest, which fits the authors' description of the calf as hard to grow. The absolute gain depends on the size of the muscle you start with, so treat percentages as a ranking of methods, not a promise of what your calves will do.
Training was matched between legs. Each leg did the same sets, reps, load (70% of one-repetition maximum) and tempo of two seconds up and two seconds down, with two-minute rests. Only knee position changed, which makes the comparison unusually clean. The same people trained both legs, so differences in genetics, nutrition and sleep were controlled by design.
Why might standing calf raises grow the gastrocnemius more?
The most likely reason is muscle length. With the knee straight, the gastrocnemius is stretched across both joints, and training at longer muscle lengths is associated with good growth in several muscles. With the knee bent, the gastrocnemius is slackened at the knee, and the trial's seated leg showed little growth.
Kinoshita and colleagues drew exactly that conclusion. They noted that the soleus, which is not affected by knee position, grew similarly in both conditions, and read the two results together as support for training at long muscle lengths. That is the authors' interpretation of one trial, not a proven mechanism.
The idea fits a wider pattern. Our full range of motion vs partial reps guide covers the evidence that stretched positions matter, and the seated vs lying leg curl comparison covers a similar length argument for the hamstrings. As with those exercises, the length explanation is a plausible reading, and other factors may contribute.
Does the seated calf raise still have a place?
Yes, but a narrower one. The seated raise grew the soleus 2.9% in Kinoshita's trial, against 2.1% for the standing raise, and that gap was not significant. It is a way to train the soleus directly, not a shortcut to a bigger gastrocnemius.
Think of the two exercises as working on a spectrum. Standing raises train both calf muscles, with the gastrocnemius getting a strong stimulus. The trial gives no reason to think seated raises are better for the soleus, only that they are not worse. A lifter who already does standing raises is therefore getting soleus growth too.
The practical case for adding seated raises is variety, equipment and preference:
- You have a seated calf machine and no standing option. The seated raise still grows the soleus.
- You want a second calf exercise. Adding one can spread work across sessions. This is our reasoning, not a tested benefit.
- Standing raises irritate you. If one version causes pain, use the one that does not. Comfort and consistency matter more than theory.
If you can only do one, the trial points to the standing raise, because it did the job for the gastrocnemius and matched the seated raise for the soleus.
What do the Smith machine trials say about taking standing raises past failure?
They suggest that finishing a set with extra reps in the stretched position is a viable way to push standing calf raises, though the evidence is mixed. In Larsen's trial, adding past-failure partials grew the medial gastrocnemius 9.6% against 6.7% for sets to failure alone, a difference of about 0.6 mm in muscle thickness with strong Bayesian evidence.
Larsen and colleagues (2025) used 23 untrained men over 10 weeks. One leg trained to momentary failure. The other did the same, then continued with partial reps in the stretched position after failure. The authors suggested that for maximum gastrocnemius growth over a short period, sets beyond momentary failure are a likely better option.
The second trial, published in the European Journal of Sport Science in 2025, compared two ways of using partials in 23 resistance-trained participants. One leg did initial partials in the stretched range. The other did full-range reps and then past-failure partials. The initial partial leg gained about 0.40 mm more medial gastrocnemius thickness, with a credible interval from -0.06 to 0.85 mm. The authors called this anecdotal evidence and concluded that both strategies are viable.
Taken together, the two trials do not crown one technique. Both found that calves grew with hard standing sets that included work in the stretched position, in untrained and in trained participants. The trained trial lasted only 8 weeks, so long-term effects are unknown.
How should you program calf raises?
Make the standing raise your main calf exercise, train it two or more times a week, and take sets close to failure with a controlled stretch. Add a seated raise if you want direct soleus work or your gym lacks a standing option. Everything below is our reasoning, not a protocol any trial tested.
- Put a standing raise first in the session when calves are a priority. It was the exercise with the clearest benefit, so it gets your best effort.
- Use a controlled tempo and a deep stretch. Kinoshita's trial used two seconds up and two seconds down. Do not bounce out of the bottom.
- Work in the 8 to 12 rep range for most sets. Kinoshita used 10 reps at 70% of 1RM. The two Smith machine trials took sets to failure. See our hypertrophy rep range guide for how loading ranges compare.
- Start with 8 to 10 hard sets a week for the calves, split over two sessions. Kinoshita's group built to 5 sets per session twice weekly, and the Smith machine trials used 4 sets twice weekly. Check how many sets per muscle group if you already train legs heavily.
- Take hard sets close to failure. Our training to failure vs RIR guide explains how to judge effort without going to failure every time.
- Progress with double progression. Add reps until every set reaches the top of your range, then add load. See double progression.
- Change one thing at a time. If you add a seated raise or past-failure partials, keep the rest of the block the same so your numbers stay readable.
Calf raises are isolation work, so they usually sit after your main lifts. Our compound vs isolation exercises guide covers where isolation exercises fit, and leg press vs squat covers the bigger leg exercises you will train first.
Which calf raise should you choose?
Choose the standing raise as your base and treat the seated raise as optional. The evidence is one direct trial, so these are practical judgements, not trial findings.
| Your situation | Suggested choice |
|---|---|
| Standing calf raise machine, Smith machine or a step with dumbbells | Standing raise as your main calf exercise |
| Only a seated calf machine | Seated raise, with the expectation that it mainly trains the soleus |
| You train calves twice a week | Standing raise both days, or standing on one day and seated on the other |
| Calves are a weak point and you want extra work | Standing raise plus a seated raise for soleus work |
| Your Achilles or calf is irritated | The version that is pain-free. Comfort beats theory |
How do you track standing and seated calf raises?
Log them as separate exercises. A 60 kg standing raise and a 60 kg seated raise are not the same task, because the knee position changes what the gastrocnemius does. One combined history would blur the comparison.
IronLedger records weight, reps, RPE or RIR and a note on every set, with the weight pre-filled from the target and editable per set. A practical set-up for calves:
- Weight and reps: the load and the reps you completed, aiming for the top of your rep range.
- RPE or RIR: how close each set came to failure, so 12 reps at RIR 3 is not mistaken for 12 reps at RIR 0. Our RPE vs RIR guide shows how to rate sets.
- Notes: the stance, the machine used, "pause at the stretch" or "added partials". Free text stays with the set in your history.
A calf raise is not a lift you would test for a one-rep max, and IronLedger's estimated 1RM uses the Epley formula, so treat it as a trend signal only. The more useful view is the per-lift trend, which shows estimated 1RM and best set for a single lift across every session you have logged. Run a block of each version, compare the trends, and keep the one that moves.
What mistakes should you avoid with calf raises?
- Treating one trial as settled. The standing vs seated finding comes from 14 untrained adults over 12 weeks. It is strong in size but a single study.
- Doing only seated raises for the whole calf. On this evidence, they grew the gastrocnemius little.
- Bouncing at the bottom. The trials used a controlled tempo and the stretched position seems to matter, so avoid using elastic recoil to skip it.
- Comparing numbers across versions. Standing and seated loads are not interchangeable. Compare each only to itself.
- Chasing partials before you master full reps. The partial strategies were tested on sets taken to failure. Get a consistent range first.
- Stopping sets far from failure. Our training to failure vs RIR guide covers why effort matters.
Frequently asked questions
For the gastrocnemius, yes. In a 12-week MRI trial, the lateral gastrocnemius grew 12.4% standing vs 1.7% seated, and the medial gastrocnemius 9.2% vs 0.6% (Kinoshita et al., 2023). The soleus grew similarly with both.
Sources and references
- Kinoshita M, et al. Triceps surae muscle hypertrophy is greater after standing versus seated calf-raise training. Frontiers in Physiology, 2023
- Larsen S, et al. Resistance training beyond momentary failure: the effects of past-failure partials on muscle hypertrophy in the gastrocnemius. Frontiers in Psychology, 2025
- Resistance training beyond momentary failure: the effects of past-failure partials versus initial partials on calf muscle hypertrophy among a resistance-trained cohort. European Journal of Sport Science, 2025
- IronLedger product page: per-set weight, reps, RPE or RIR and notes; personal records and estimated 1RM.



