WHY STATIC PLANKS ARE NOT ENOUGH!

What Should a Modern Core Program Include? -And what research suggests

The plank has become one of the most used core exercises. But static training often has limited transfer to functional movement. Research suggests that dynamic exercises may provide better results for both sport and everyday life.

Why static planks are not enough

The plank has become almost synonymous with core training. You have probably seen the instruction “hold for at least 60 seconds” in a gym, a training class, or an app. And yes, the plank may build basic stability – if performed correctly. But research also shows that static exercises alone have limited transfer to physical demands during functional movement in sport and everyday life (McGill 2003, Manchado 2017).

Static stability meets dynamic demands

When you hold a plank, the core muscles learn to resist movement. That can be useful. A good ability to stabilize matters. But it does not fully reflect how we use the body in real life. You lift shopping bags while turning. You play tennis with rotation in every stroke. You run with constantly shifting load between the right and left side and the pelvis constantly changing tilt.

Life requires the core to stabilize while the arms and legs move in different directions and at different speeds. This requires what researchers often describe as adaptive control: the ability to adjust muscle tension and stiffness in real time, depending on what the situation demands.

A static plank trains the body to hold one position. It does not necessarily prepare you to handle force while you are moving.

What does research say about integrated core exercises?

Gottschall and colleagues published a study in the Journal of Strength and Conditioning Research in 2013. In the study, 20 students performed 16 different core exercises while the researchers measured muscle activity using EMG, or electromyography. They compared traditional isolation exercises, such as crunches and static planks, with what they called integrated core exercises, where the arms or legs move while the core is working.

The results were clear. The rectus abdominis and external oblique showed 27% higher activity during a plank with arm reach compared with a traditional crunch. A mountain climber plank produced higher activity than a static forearm plank. The external oblique was three times more active during a resisted pointer exercise than during an isolated arm extension.

The researchers concluded that integrated core exercises, which require the activation of additional muscles such as the shoulder and hip muscles, may be optimal for maximizing strength and reducing injury risk.

When you add movement in the arms or legs, the core has to work harder to keep the rest of the body stable. That creates a stronger training stimulus than simply holding still.

How to build core capacity, not just activation

It is useful to distinguish between two concepts: core activation and core capacity training.

Activation is about getting the muscles to respond and work. This can happen spontaneously when you balance on an unstable surface. Activation helps keep the muscles alert and responsive during the day, and may contribute to the prevention of musculoskeletal problems.

Core capacity training is about systematic strength development. It requires heavier loading, fewer repetitions, and progression over time. This means functional bodyweight exercises in unstable positions, unilateral movements where one side works more than the other, and often elements of rotation.

A static plank can activate parts of the core. But to build capacity — the ability to produce and control force through a wider range of movement — you need to add variation, movement, and resistance.

What should a modern core exercise include?

In 2025, Tsartsapakis, Zafeiroudi, and Trigonis developed an eight-week core training protocol for recreationally active adults. The randomized controlled study examined the effects of progressive core training on muscle activation, muscle thickness, balance, and quality of life.

Their protocol included three phases: stability, strength, and power. It emphasized that the core primarily functions as a stabilizer and force-transfer system, not simply as a primary mover. In other words, the exercises were not only about bending or rotating the spine in isolation. They were about keeping the core controlled while the rest of the body moved dynamically.

The research group measured, among other outcomes, improved force production through medicine ball slams, improved balance, and increased muscle thickness in deep abdominal and back muscles.

What they describe is core training that reflects real-life demands: different speeds, directions, and loads.

Does the static plank still have a place?

This is not an attack on the plank. Static exercises can absolutely be useful, especially early in a training process, for people with hypermobility, or as part of rehabilitation after injury.

When performed with good technique, the plank can help you maintain a neutral position. This means avoiding excessive arching in the lower back, and preferably reducing some of that arch to avoid unnecessary compression of the facet joints, which may be vulnerable under load (Adams, 2004; 2010). Learning to keep the lower back in a more neutral position can be useful during some types of loading.

But it is not enough if your goal is to become stronger, run faster, lift more safely, or reduce the risk of overload injuries.

A correctly performed static plank can be part of the foundation of a house. You need the foundation, but the rest of the house still has to be built on top of it.

What does this mean in practice?

At CoreCapacity, we always use balance exercises during the warm-up to increase activity in the nervous and muscular systems. Through reflex activity during balance challenges, most people experience a better sense of contact with the muscles they are about to train.

The aim is a relaxed and preferably playful warm-up that feels enjoyable. This can also help shift attention away from fear of worsening previous pain, such as low back pain. Many people also experience freer movement and less perceived muscular stiffness.

Start with what you can manage. Movement quality matters. Begin with low load and low difficulty, and develop good technique first.

If you are new to core training, a position that requires some abdominal activity can be a good starting point. Then try to gently reduce the arch in your lower back and find a more neutral position. This increases the likelihood of engaging deep muscles around the front of the spine and pelvis, including the iliopsoas, which lies deep beneath several abdominal structures.

Next, add movement. For example, lift one arm or one leg while keeping the core position controlled. When that feels stable, move the arm or foot slowly forward and back. Then introduce rotation, for example by turning slightly to the side.

Add resistance. You might use an elastic band attached to a fixed point and pull it toward you while the core maintains position. Or you might hold a kettlebell in one hand while doing a squat.

Then increase the demand: make the exercise heavier, train on more unstable surfaces, combine several movement planes at the same time, or increase the difficulty. Unilateral loading with an element of rotation is often especially useful, as long as technique is not compromised. These elements also require movement from the core while you maintain control of the lower back and avoid excessive arching. The force generated thru movement of the core with load, increases the total core capacity.

Variation is the key. Healthy core training is not about finding one perfect exercise. It is about exposing the body to different demands, directions, and loads within your own limits — just as life does.

In summary: from static to dynamic

The plank can be a useful tool when used correctly. Modern research points toward core training that integrates movement, load, and variation. This gives better transfer to sport, everyday life, and injury prevention.

If you want to build a core that works in real life, you need more than static training. You need progression, functional dynamics, and systematic training over time.

Would you like a program that builds dynamic core control based on modern research? Download Core Capacity to access progressive exercises adapted to your level.

References

• Gottschall, J. S., Mills, J., & Hastings, B. (2013). Integration core exercises elicit greater muscle activation than isolation exercises. Journal of Strength and Conditioning Research, 27(3), 590–596.

• Manchado C, Garcia-Ruiz J, Cortell-Tormo JM, Tortosa-Martinez J. Effect of core training on male handball players’ throwing velocity. J Hum Kinet. 2017;56:177–85.

• McGill , S.M., Grenier, S., Kavcic, N., Cholewicki, J. Coordination of muscle activity to assure stability of the lumbar spine. Journal of Electromyography and Kinesiology 13 (2003) 353–359.

• Tsartsapakis, I., Zafeiroudi, A., Trigonis, I., Lyrtzis, C., & Astrapellos, K. (2025). Development and implementation of a core training protocol: Effects on muscle activation, hypertrophy, balance, and quality of life in recreationally active adults. Methods and Protocols, 8(4), 77. https://doi.org/10.3390/mps8040077

About CoreCapacity AS

CoreCapacity shares knowledge about how modern core training can influence your own health in a way that makes sense. Our goal is to help people make good, informed choices about how to build and maintain good health and create lasting training routines for the core muscles.

CoreCapacity provides exercises that start at an accessible level and are simple and safe to perform. At the same time, they are placed within a progression system and are advanced enough to activate the body’s core muscles automatically. With gradually increasing load and difficulty, the exercises are designed to support functional movement, improve perceived health and increase performance.

Parts of this text were prepared with the assistance of AI.