Does pre-exhausting your triceps change how the bench press works your muscles?
Pedro RodriguesFounder of Actus
Bruna GüntherFounder of Actus
A 2026 crossover trial in 15 resistance-trained women and 15 resistance-trained men found that tiring the triceps to failure right before a 10RM bench press set changed which muscles worked harder. In women, triceps activation rose after the pre-exhaustion (p = 0.02), but in men it did not (p = 0.36). Chest activation rose in both sexes. This is a one-session muscle activity result, not proof of more strength or muscle growth.
Pre-exhaustion means doing an isolation exercise for a muscle right before a compound lift that also uses it. The idea is old: tire the small muscle first so the big lift makes it work harder. A new trial in the European Journal of Sport Science (Olsson et al. 2026) tested this on the bench press and asked a question few studies ask: do women and men respond the same way?
What did the study do?
The researchers recruited resistance-trained adults and had each person bench press under two conditions, once fresh and once right after a triceps exercise taken to failure. The order of the two conditions was block randomized, so each person served as their own comparison.
| Item | Detail |
|---|---|
| Participants | 15 resistance-trained women and 15 resistance-trained men |
| Design | Crossover, condition order block randomized |
| Sessions | Two 10RM bench press sets, one without and one after triceps pre-exhaustion to failure |
| Rest | 5 minutes between the two conditions |
| Outcome | Muscle activity by surface electromyography (EMG) |
| Muscles measured | Pectoralis major (chest), triceps brachii, anterior deltoid (front shoulder) |
| Journal | European Journal of Sport Science, 2026 |
EMG measures the electrical signal a muscle sends when it contracts. The team expressed it as a percent of each person's maximum voluntary isometric contraction (%MVIC), a standard way to compare people of different sizes. They used a mixed model ANOVA, a statistical test that compares conditions and sexes at the same time.
What did it find?
- Reps were similar between sexes after pre-exhaustion. Women and men performed a similar number of bench press reps after the triceps exercise (p = 0.55).
- Triceps activation rose in women only. After pre-exhaustion, triceps activation went up in women (p = 0.02) but not in men (p = 0.36). This is the sex difference the title refers to.
- Chest activation rose in both sexes. Pectoralis major activation increased after pre-exhaustion in women and in men alike (p < 0.01 for both). The chest appears to pick up more of the work when the triceps are tired, whatever your sex.
- The front shoulder did not change. No change in anterior deltoid activation was detected in either sex.
There was also a useful baseline result. During the normal bench press without pre-exhaustion, the trial found no sex differences in muscle activation in any of the 3 muscles it measured. So women and men used their pressing muscles in a similar way until the triceps were fatigued.
The authors concluded that in trained women, pre-exhausting the triceps raises activation in both the triceps and the chest during the bench press, while in men it raises activation only in the chest.
How does this compare with earlier evidence?
Pre-exhaustion is really a question of exercise order: a single-joint move before a multi-joint move. A meta-analysis of 11 studies on exercise order (Nunes et al. 2020) looked at what that means over weeks of training, not one session. When all strength tests were pooled, order made no difference (effect size -0.11, p = 0.306). But strength in the multi-joint lifts grew more when those lifts came first (effect size 0.32, p = 0.034), and strength in single-joint lifts grew more when those came first (effect size -0.58, p = 0.032). For muscle growth, order had no clear effect (effect size 0.03, p = 0.862). The review's summary was that strength gains are largest in the exercises done at the start of a session.
That puts the new trial in context. Olsson et al. 2026 show that triceps pre-exhaustion shifts muscle activity during the bench press. Nunes et al. 2020 suggest that, over time, doing an isolation move before the bench press may cost you some bench press strength, while muscle growth looks similar either way. Higher activation in one set does not tell you which order builds more muscle.
A systematic review of 30 articles on advanced training techniques (Krzysztofik et al. 2019) found that there is not enough evidence to give clear rules on volume, effort or frequency for these methods. It suggested well-trained lifters may use them as an extra stimulus to break plateaus or to avoid boredom. Pre-exhaustion fits that description: a variation, not a requirement.
None of these earlier reviews compared women and men on pre-exhaustion. The sex difference in triceps activation is new, and it rests on this one small trial.
What are the limits?
- Small sample. 15 women and 15 men is enough to detect a large difference, but a sex-by-condition effect from one trial needs to be repeated before anyone builds programs around it.
- One session, one surrogate. EMG shows electrical activity, not muscle growth or strength gain. Higher activation in a single set is a short-term signal, and the trial did not follow anyone over weeks of training.
- Trained lifters only. All participants were resistance trained. Beginners may respond differently.
- One exercise, one load. The test used a 10RM bench press after triceps work to failure. Other loads, other pre-exhaustion moves or less fatigue may give different results.
- Funding and details. The study summary does not report funding or exact training history, so you cannot judge those from the published summary.
What should you do with it?
- Do not reorder your program for this result alone. The trial measured muscle activity in one session. The exercise order meta-analysis found that bench press strength grows more when the bench press comes first, so if a bigger bench is your goal, keep it early in the session.
- If you are a woman who wants more triceps work from the bench press, pre-exhaustion is a reasonable experiment. In this trial it raised triceps and chest activation in trained women. Treat it as a variation to try for a block, not a proven upgrade.
- If you are a man, expect the chest, not the triceps, to pick up the slack. Pre-exhaustion raised chest activation in men but not triceps activation. If you want more triceps work, direct triceps exercises are the simpler path.
- Experienced lifters can use it to vary training. Earlier reviews describe advanced techniques like this as an extra stimulus for trained people, with too little evidence for firm rules. Use it to break monotony, not as a must.
Is pre-exhaustion good for building muscle?
This trial cannot answer that because it measured muscle activity, not growth. The exercise order meta-analysis found no clear difference in muscle growth whether single-joint or multi-joint exercises came first. So pre-exhaustion seems neither better nor worse for size, based on current evidence.
Will pre-exhaustion make my bench press weaker?
In the short term, tiring the triceps first is likely to make the bench press feel harder, though this trial only reported that women and men did a similar number of reps. Over weeks, the exercise order meta-analysis found that strength in a lift grows more when that lift comes first. If you are training for a stronger bench, doing it fresh is the safer choice.
Do women and men bench press differently?
Without pre-exhaustion, this trial found no sex differences in muscle activation in the chest, triceps or front shoulder. The difference only appeared after the triceps were tired, when activation rose in women's triceps but not men's. One small trial is not enough to say women and men should train the bench press differently.
Sources
- Olsson et al. 2026, European Journal of Sport Science
- Nunes et al. 2020, European Journal of Sport Science
- Krzysztofik et al. 2019, International Journal of Environmental Research and Public Health
This brief was drafted with AI from the sources listed above and passed automated source checks before publishing. Pedro Rodrigues, founder of Actus, is the responsible author.
Educational content, not medical advice. Training and diet changes carry risk; stop if you feel pain and talk to a physician before changing your program.