Welcome to Movement Analysis!
Ever wondered how sports scientists describe exactly how an athlete moves? Whether it’s a gymnast doing a backflip or a footballer twisting to beat a defender, we use a specific "language of movement" to describe it. In this chapter, we are going to look at Planes of Movement and Axes of Rotation.
Don’t worry if these words sound a bit like a math lesson at first! Think of them as invisible lines and maps that help us understand how the human body moves in 3D space. Let’s dive in!
1. Planes of Movement
Imagine the body is being sliced by a large, invisible sheet of glass. This sheet is a Plane. It’s an imaginary flat surface that goes through the body, and movement happens along that surface.
According to your OCR syllabus, there are three planes you need to know:
A. The Sagittal Plane
This plane divides the body vertically into left and right sides. Movements in this plane are usually "forwards and backwards" or "up and down."
Real-world examples:
• Running (legs moving forward and back)
• A bicep curl
• A forward roll in gymnastics
B. The Frontal Plane
This plane divides the body into front and back sections. Imagine you are standing between two narrow walls of glass. You can only move side-to-side.
Real-world examples:
• A star jump (jumping jacks)
• Side-stepping in netball or rugby
• A cartwheel
C. The Transverse Plane
This plane divides the body horizontally into top and bottom halves (around the waist). Movements in this plane involve rotation or twisting.
Real-world examples:
• A 360-degree spin in ice skating
• A discus thrower spinning
• A golfer twisting their torso during a swing
Quick Review: The "Glass" Memory Trick
• Sagittal = Straight ahead/back (like a narrow hallway)
• Frontal = Facing you (like a side-to-side wall)
• Transverse = Twisting (like a table top)
2. Axes of Rotation
While planes are "sheets of glass," Axes (plural of axis) are like imaginary poles or skewers running through the body. The body rotates around these poles.
The OCR syllabus requires you to know these three:
A. The Frontal Axis
This axis runs horizontally through the body from hip to hip (left to right). Imagine a pole going through your waist like a table football (Foosball) player.
What happens here? The body rotates forward or backward over this pole.
Example: A somersault or a forward roll.
B. The Transverse Axis
This axis runs horizontally through the body from front to back (like an arrow through the belly button).
What happens here? The body tilts from side to side.
Example: A cartwheel.
C. The Longitudinal Axis
This axis runs vertically from head to toe. Imagine a pole going straight down through the top of your head.
What happens here? The body spins or twists on the spot.
Example: A full twist in trampolining or a pirouette in dance.
Did you know? The word "Longitudinal" comes from "longitude," which are the lines on a globe that run from the North Pole to the South Pole!
3. Putting it All Together: How they Pair Up
In the exam, you might be asked which plane and axis work together for a specific skill. It can be tricky, but here is a simple way to remember the "Golden Pairs":
1. Sagittal Plane + Frontal Axis
Used for forward/backward movements.
Example: A forward roll.
2. Frontal Plane + Transverse Axis
Used for side-to-side movements.
Example: A cartwheel.
3. Transverse Plane + Longitudinal Axis
Used for rotation/spinning movements.
Example: A 360-degree spin.
Key Takeaway
Planes are the flat surfaces the body moves along. Axes are the lines the body rotates around. If you see a "spin," think Longitudinal/Transverse. If you see a "somersault," think Frontal/Sagittal. If you see a "cartwheel," think Transverse/Frontal.
Common Mistakes to Avoid
• Mixing up the names: Students often mix up the Frontal Plane and the Frontal Axis. Remember: The Frontal Plane is for side-to-side movement (like a star jump), but the Frontal Axis is for flipping (like a somersault).
• Overthinking the Transverse Axis: Some textbooks use different names for these. Always stick to the OCR J587 labels: Frontal, Transverse, and Longitudinal for axes.
Quick Review Quiz (Mental Check)
1. Which plane divides the body into top and bottom? (Answer: Transverse)
2. Which axis runs from hip to hip? (Answer: Frontal)
3. A gymnast performing a cartwheel is moving in which plane? (Answer: Frontal)
4. A figure skater spinning on one leg is rotating around which axis? (Answer: Longitudinal)
Great job! You’ve mastered the basics of how the body moves in space. Keep practicing these with real sports clips on YouTube to see if you can spot the planes and axes in action!