The science behind punching power in boxing
Introduction: Why is impact power so important?
In boxing, punching power often decides who wins. A powerful punch can throw your opponent off balance or even lead to a knockout. But what makes a punch really powerful? What physical skills do you need to reach your maximum punching power?
Does strength training make you slow?
As a boxing trainer in Hamburg, I am often asked whether strength training makes boxers slower. People usually think of bulky, pumped-up musclemen who lack both speed and mobility.
In fact, excessive muscle building can impair flexibility and speed, which is detrimental in martial arts. Bodybuilders often train for maximum muscle mass, which can lead to reduced flexibility and increased adaptation of slow-twitch muscle fibers. In addition, the mountains of muscle naturally also need to be supplied with sufficient oxygen, which quickly becomes noticeable in a competition through limitations in endurance.
In contrast, martial artists focus on speed and agility in order to perform effective techniques. Too much muscle can therefore limit performance in martial arts.
Interestingly, scientific studies have shown that targeted functional strength training can significantly improve performance in martial arts. Training methods are used that are specifically aimed at promoting explosive strength and the activation of fast-twitch muscle fibers without compromising flexibility or speed. In particular, the combination of maximum strength training and speed exercises can ideally support the balance between strength and dynamics.
This question is actually very common and I come across it again and again – both in training with my clients and in conversations about martial arts and strength training. As this topic has been on my mind for a long time, I went in search of well-founded answers and discovered an interesting Austrian study that examines precisely this thesis.

Aim of the study: Where does the power come from?
The aim of the study was to find out which physical abilities influence punching power. Particularly exciting: in addition to maximum strength and speed, the ground reaction force (GRF) was also examined – i.e. the force that your back leg exerts on the ground when you strike. This combination has hardly ever been examined so closely before.
Who stood in the ring of science?
For the study, 31 boxers from a Viennese boxing club were tested. The boxers represented different performance classes and were tested in various areas:
- Maximum strength: squats for the legs and bench presses for the upper body.
- Speed strength: Counter movement jump (jumping power of the legs) and medicine ball throws (explosive power of the upper body).
- Impact force: Measured with a special device that records the actual force of a blow.
The most important findings of the study
1. your upper body strength is crucial
The maximum strength in the bench press had a strong correlation with punching power. This means that the stronger your upper body is, the harder you can hit. How strong you are in relation to your body weight is particularly important. Bench presses are therefore one of the best exercises to improve your punching power.
2. footwork and ground reaction force – the hidden strength booster
A high ground reaction force exerted by your back leg significantly improves your punching power. This shows how important strong legs and, above all, a clean technique are. Because only with the right technique can you channel the power of your entire body into the shot.
3. speed: a surprise
Interestingly, speed strength showed no significant correlation with punching power. This could be due to the fact that the exercises tested were not optimally adapted to the stroke movement. Speed remains important, but must be trained specifically.
What do these results mean for your training?
1. train your upper body strength
Bench presses and other exercises to increase your upper body strength should be firmly anchored in your training plan. Strong chest, shoulder and arm muscles give you the power to hit harder.
2. strengthen your footwork
Your footwork is the foundation of a powerful punch. Squats, lunges and plyometric training help you to effectively transfer the power from your legs into your punch.
3. use quick strength in a targeted manner
Use exercises such as medicine ball slams that simulate the movement of a punch. This not only increases your explosiveness, but also trains the correct punching movement.
Conclusion: Your path to more power
The study clearly shows that maximum strength and ground reaction power are crucial to improving your striking power. Speed remains an important factor, but should be tailored to your punching technique. With a well-thought-out training plan, you can hit harder and improve your performance in the ring.
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Your coach Zeki
Your Boxing Coach – Personal Trainer Hamburg