FAQs

Frequently Asked Questions

Answers to common questions about the DynaCore® trainer, such as how rotational core training works, who it is for, how to set up and use the trainer safely, the materials and science behind it, and what to expect from training.

 

What is the DynaCore® trainer?

The DynaCore® trainer is a patented, U.S.-built core-training device that enables full 180° rotational movement and micro-instability. It trains the core the way the body actually moves in sport — through rotation and stabilization across all three planes of motion, not just the front-to-back plane that most equipment targets.

It pairs with the DynaCore® app for guided workouts, real-time angle tracking, and progress analytics. Oh! And it offers gaming to make your workouts as engaging as they are effective, helping you to develop and maintain a good exercise habit.

What is rotational (transverse-plane) core training, and why does it matter?

Rotational core training works the trunk as it twists and transfers force between the lower and upper body — the transverse plane. It matters because most athletic power (a swing, a throw, a serve, a takedown) is generated through rotation, and the trunk is the link that transmits that force.

The core muscles function largely as a force transmitter in the kinetic chain rather than only a mover of the spine.

Research: Kibler, Press & Sciascia (2006), Sports Medicine.

Can compound lifts like squats and deadlifts build a complete core on their own?

Not completely. Squats and deadlifts build a strong core, but electromyography studies show they load the trunk mainly to brace against the weight in the sagittal (front-to-back) plane. They do little to train rotation, which is where rotational sports are won.

Dedicated rotational and anti-rotational training complements the big lifts by addressing the transverse-plane demand they leave largely untrained.

Research: Martín-Fuentes et al. (2020), PLOS ONE (deadlift EMG); Yavuz & Erdağ (2017), Applied Bionics and Biomechanics (squat EMG); Kibler, Press & Sciascia (2006), Sports Medicine.

Why is the DynaCore® trainer better than sit-ups or crunches?

Sit-ups and crunches move the spine repeatedly in one plane and place high compressive load on the lower back. The DynaCore® trainer instead trains trunk stability and rotation through a full 180° range, building strength, stability, and mobility in the way the body uses the core during activity.

Research: Axler & McGill (1997), Medicine & Science in Sports & Exercise.

How is the DynaCore® trainer different from a BOSU ball or balance board?

A BOSU ball or balance board adds an unstable surface, but the range of motion is only a few degrees. The DynaCore® trainer enables full 180° dynamic rotation across multiple planes, with real-time tracking and guided progressions — training athletic movement patterns, not just static balance.

Does the DynaCore® trainer provide a full core workout?

Yes. The 180° rotational capability and multi-planar movement engage the major core muscle groups, including the deep stabilizers that single-plane equipment tends to miss.

What muscles does the DynaCore® trainer work?

It targets the muscles of the trunk as an integrated system: the rectus abdominis, internal and external obliques, transverse abdominis, the deep spinal stabilizers, and the muscles that control rotation and anti-rotation. Rotational training emphasizes the obliques and deep stabilizers that single-plane exercises underuse.

Research: McGill & Karpowicz (2009), Archives of Physical Medicine and Rehabilitation.

Is there scientific support for the claims you make?

Yes, there is! Product development has been guided by peer-reviewed research in biomechanics, exercise science, and sports performance. A full list of the studies, with citations, is published on “The Science” page at coreforgefitness.com: https://coreforgefitness.com/pages/science_behind_dynacore_trainer_design

Please note: claims are framed around established training principles. Although the research informed the design of the DynaCore® trainer, the trainer itself has not yet been evaluated in clinical trials.

 

How does rotational core training help golfers?

Golf power comes largely from rotation. Research on the golf swing found that driving ball velocity is associated with maximizing the separation between the upper torso and the pelvis — the “X-factor.” Rotational core training targets the trunk rotation and control that maximize the impact of that separation.

Research: Myers et al. (2008), Journal of Sports Sciences.

How does rotational core training help baseball and softball players?

Both throwing and hitting velocity depend on how fast and how well the trunk rotates. In a study of pitchers, peak trunk-rotation speed predicted ball velocity, and hip–shoulder separation predicted that trunk speed. Rotational core training trains the sequence that generates that velocity.

Research: Orishimo et al. (2023), Journal of Strength and Conditioning Research.

How does rotational core training help tennis and other racquet-sport players?

The serve and groundstrokes transfer energy up the kinetic chain through the trunk. Analysis of the tennis serve found that the energy passed from the trunk to the hand was positively associated with ball speed. Training trunk rotation and stability supports that energy transfer.

Research: Martin et al. (2014), American Journal of Sports Medicine.

How does rotational core training help wrestlers, boxers, and MMA athletes?

Grappling and striking depend on balance, trunk control, and rotational force. A study of judo athletes found that a short core-stability training program significantly improved postural stability — the foundation for throws, sprawls, and scrambles.

Research: Jadczak et al. (2019), Isokinetics and Exercise Science.

Can core training reduce my injury risk?

While nothing can eliminate the risk of injury completely, core training may contribute to a significantly reduced risk of injury. A large meta-analysis found that strength-training programs reduced sports injuries to under a third of those not incorporating strength training, and cut overuse injuries by roughly half. A strong, well-controlled core is one factor associated with athletic resilience.

Research: Lauersen, Bertelsen & Andersen (2014), British Journal of Sports Medicine.

 

How much space do I need to use the DynaCore® trainer?

A clear, level, 7’ x 7’ area is enough for a full range of motion. You just need to keep clear space on all sides while in use.

Where can I set up the DynaCore® trainer?

Anywhere with the floor space above and a stable, level surface. The DynaCore® trainer works in home gyms, living rooms, offices, physical-therapy clinics, and professional training facilities.

Is assembly of the DynaCore® trainer difficult?

No. Slide the platform into the frame until it clicks, snap on the handles, and it is ready in under a minute. Disassembly is just as quick.

Do I need the DynaCore® training app? What does it do?

While the DynaCore® trainer can be used without the app, we highly recommend incorporating the app into its use. The DynaCore® app guides setup and exercises, demonstrates proper form, and tracks your training with real-time angle tracking and progress analytics. It is designed for intuitive use with clear visual guides and progressions that adapt as you improve.

The app is available for free – no subscription required – on both iOS and Android. Your fitness and workout data stays on your device — we never sell it or share it. The app is built on Unity, which may collect limited anonymous technical data (such as device identifiers and app-performance information) as described in our privacy policy. See that policy and our software user agreement at coreforgefitness.com/pages/legal for details.

Can I create my own exercises?

Yes, but... PLEASE learn the basics first! The DynaCore® trainer supports a wide range of movements. Learn the fundamentals first so you can progress safely, train within your control, and stop if you feel pain or dizziness. Once you’ve mastered the basics, there is a “Sandbox Mode” available on the app to help you define your own exercise variations. We only ask that if you discover something useful, please share it with the community.

How often should I use the DynaCore® trainer?

We recommend training at least 2-3 times per week. The app will actually track your streak of performing exercises on the trainer every three days or less. We do this because consistency matters more than any single session. Regular, progressive training produces results over time, and the app supports steady, repeatable practice. Follow the app’s guided progressions and build gradually rather than chasing rapid gains.

Research: Teixeira et al. (2012), International Journal of Behavioral Nutrition and Physical Activity (exercise adherence).

Can I add resistance to the DynaCore® trainer for a harder workout?

Yes! The DynaCore® trainer is rated for added resistance of up to 250 lb (115 kg), so it can scale from bodyweight training to heavily loaded work. Increase load gradually and keep full control of each repetition. Resistance tube sets that can provide resistance ranging from 10 to 150 lbs are available at the CoreForge Fitness store.

 

Are there age restrictions?

Yes. The DynaCore® trainer is for ages 13 and up only. Do not use it if under age 13. Adult supervision is required for all users under 18.

Read all instructions and warnings before use.

Is there a maximum user weight?

Yes. The maximum user weight is 400 lb (180 kg). The added-resistance limit is 250 lb (115 kg). Do not exceed these limits.

Do I need to be in shape to start?

No. The app includes beginner progressions, and intensity can be adjusted through body position, duration, and exercise variation, scaling from beginners to elite athletes. However, as with any exercise program, consult a medical professional before starting if you have any health concerns.

What if I am too weak to do a full plank?

Start with the app’s beginner progressions, which use shorter holds and easier body positions. Building standard planks and side planks from your knees helps you prepare; if you can hold those for about thirty seconds, you are ready to begin on the DynaCore® trainer.

Should I consult a doctor before using it?

Consult a physician before use if you are pregnant or have back, joint, balance, or heart conditions, other medical conditions, or recent surgery. As with any rigorous exercise, get medical clearance if you have any doubt about your readiness.

How do I use the DynaCore® trainer safely?

Read all instructions and warnings and watch the instructional videos before use. Inspect the trainer before each use and do not use it if any part is damaged. Use it on a stable, level surface with clear space on all sides, keep control and proper form, and stop immediately if you feel pain or dizziness.

 

What is the DynaCore® trainer made of, and is it durable?

The DynaCore® trainer is made of carbon-reinforced polycarbonate — the same family of material used in bullet-resistant glass, with the incorporated carbon adding toughness. It is built to withstand heavy training loads and wear from serious training. It is NOT just a disposable piece of plastic.

Watch what happens when we drive a car over it at coreforgefitness.com!

It is a serious training device, not a toy.

Is the DynaCore® trainer made in the USA?

Yes. The DynaCore® trainer is manufactured in the United States.

Is the DynaCore® trainer patented?

Yes. The DynaCore® trainer’s rotational design is protected under U.S. Patent #11,844,979.

 

How soon will I see results?

Many users may notice improved core stability and reduced back discomfort within a few weeks of consistent use. The app’s progress tracking shows measurable changes in strength, endurance, and range of motion over time. Results depend on consistency and individual factors.

Will the DynaCore® trainer give me six-pack abs?

Visible abs depend mostly on diet and overall body composition, not just on core muscle strength. The old saying that “six-pack abs are made in the kitchen” holds true. The DynaCore® trainer builds a stronger, more stable, more mobile core; revealing it to the world requires an appropriate nutrition plan as well.

Will I actually stick with using the DynaCore® trainer?

Consistency is the goal, and the DynaCore® trainer is built to support it. The companion app uses guided progressions, progress tracking, and game-based training to encourage steady, long-term use. Consistency remains the strongest predictor of training results, and we’re doing all we can to help you be consistent.

Research: Teixeira et al. (2012), International Journal of Behavioral Nutrition and Physical Activity.

 

Where can I buy the DynaCore® trainer?

The DynaCore® trainer is sold directly at coreforgefitness.com. You can also reach the team at info@coreforgefitness.com or 513-845-1100 with questions about orders, coaching, or facility purchases.

Are there any Guarantees?

Yes! The DynaCore® Fitness Training System comes with a customer satisfaction guarantee that makes purchase essentially risk-free. All you have to do is give it a try by completing the Guided Fitness Program within 90 days. If, after completing the program, you are not satisfied in any way, we will return your purchase price... AND you get to keep the trainer! See coreforgefitness.com/pages/legal for details.

What is the warranty?

The DynaCore® Fitness Training System is covered by a Limited Lifetime Warranty against any manufacturing defects or damage from normal training use. Warranty and return details are available at coreforgefitness.com/pages/legal. Contact info@coreforgefitness.com with any questions.