Andrew Payne
MS, NASM-CPT
Why Training in 3D Matters
Take a look at a typical gym floor and you'll notice a pattern. Squats, lunges, presses, rows, deadlifts, walking, and running are all excellent exercises, but most primarily occur in the sagittal plane.
While sagittal-plane training is important, relying on it alone creates gaps in movement competency. Clients need to control side-to-side and rotational forces to move efficiently and safely.
By incorporating all three planes of motion, personal trainers create programs that more closely reflect how the body moves, including:
- Better balance and coordination.
- Enhanced athletic performance.
- Greater movement efficiency.
- Improved joint stability.
- More resilience during everyday activities.
The Sagittal Plane
Imagine a pane of glass dividing the body into left and right halves. The sagittal plane includes forward-and-backward movement and is characterized by flexion and extension. This is the plane most clients are familiar with because many traditional strength-training exercises occur here.
The sagittal plane is foundational for developing strength, power, and muscle mass, making it a key component of nearly every training program:
- Biceps curls.
- Calf raises.
- Deadlifts.
- Lunges.
- Running.
- Squats.
- Triceps pressdowns.
- Walking.
The Frontal Plane
Now imagine a pane of glass dividing the body into front and back halves. Movement in the frontal plane occurs side to side and is driven by abduction and adduction. Many clients spend relatively little time training this plane, despite regularly encountering these movements in everyday life and recreation.
Including frontal-plane training improves lower-body stability and helps clients better manage the side-to-side forces that commonly occur during sport and daily activities:
- Lateral lunges.
- Lateral raises.
- Lateral step-ups.
- Side shuffles.
- Single-leg balance exercises.
- Skater hops.
The Transverse Plane
The transverse plane divides the body into upper and lower halves and is centered around rotation. Rather than picturing a pane of glass, imagine an axis running vertically through the body. Any movement that rotates around that axis occurs in the transverse plane.
The shoulders and hips also perform rotational actions that occur in the transverse plane. In fact, some exercises that appear primarily sagittal may still involve transverse-plane motion within the joints.
Because many daily activities involve turning, reaching, and rotating, transverse-plane training plays an important role in building movement competency:
- Cable rotations.
- Medicine-ball rotational throws.
- Russian twists.
- Standing torso rotations.
- Woodchops.
Learn The Latest Science In Athlete Performance
Become a Performance Enhancement Specialist
How Personal Trainers Can Build a Multiplanar Program
The goal isn't to categorize every exercise perfectly. Instead, use the planes of motion as a framework to create more balanced programming.
When reviewing a client's workout plan, ask yourself:
- Does the program include forward-and-backward movement?
- Does it challenge side-to-side movement?
- Does it incorporate rotational control and strength?
- Are all major joints exposed to movement from different angles?
Many exercises blend multiple planes simultaneously. For example, a step-up paired with a curl and overhead press challenges the body through several movement patterns in one integrated exercise. This multiplanar approach improves coordination while adding variety and movement complexity to a client's training experience.
Frequently Asked Questions About the Planes of Motion
What are the three planes of motion?
The three planes of motion are the sagittal, frontal, and transverse planes, which describe the primary directions the body moves. The sagittal plane involves forward-and-backward movement, the frontal plane involves side-to-side movement, and the transverse plane involves rotation. Understanding these planes helps personal trainers create more balanced programs that develop movement competency in multiple directions.
Why is it important to train in all three planes of motion?
Most traditional exercise programs rely heavily on sagittal-plane movements like squats, lunges, and running. Incorporating frontal- and transverse-plane exercises helps clients build more well-rounded strength, improve stability and coordination, and better prepare for the multidirectional demands of everyday life and sport.
What are examples of frontal-plane exercises?
Frontal-plane exercises involve side-to-side movement and commonly include lateral lunges, lateral raises, and side shuffles. These movements challenge balance and stability differently than sagittal-plane exercises and can help clients improve their ability to move efficiently in multiple directions.
What plane of motion is a squat?
The squat is primarily a sagittal-plane exercise because it involves flexion and extension at the ankles, knees, and hips while moving the body up and down. Although the primary movement occurs in the sagittal plane, the muscles of the core and lower body also work to stabilize the body in the frontal and transverse planes.
What are examples of transverse-plane exercises?
Transverse-plane exercises emphasize rotational movement around the body's vertical axis. Common examples include cable rotations, medicine-ball rotational throws, woodchops, and torso rotation exercises that train clients to produce and control rotational force.
What is multiplanar exercise?
Multiplanar exercises combine movement from more than one plane of motion within a single exercise. For example, a step-up paired with a biceps curl and overhead press challenges the body through multiple movement patterns, helping improve coordination, stability, and overall movement efficiency.
How can personal trainers identify a sagittal-plane-dominant program?
A program may be sagittal-plane dominant if most of the exercises involve forward-and-backward movement patterns such as squats, deadlifts, presses, and running. Reviewing exercise selection through the lens of the three planes of motion can help personal trainers identify opportunities to incorporate more lateral and rotational movements.
How can personal trainers incorporate multiplanar training into a workout program?
Personal trainers can incorporate multiplanar training by intentionally including exercises that challenge clients in the sagittal, frontal, and transverse planes throughout the week. This may involve adding lateral lunges, rotational cable exercises, balance drills, or integrated movements that combine multiple planes within a single exercise.
