Planes and Axes in Sporting Actions

This lesson is an integration lesson that brings together everything you have learned about levers, mechanical advantage, planes of movement, and axes of rotation for the OCR GCSE PE specification (J587). You will practise analysing sporting movements by combining all of these concepts, which is exactly the kind of analysis required in the exam.

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The Complete Analysis Framework

When analysing any sporting movement in terms of movement analysis, you should work through the following:

flowchart TD
    A["Identify the sporting action"] --> B["Identify the joint(s) involved"]
    B --> C["Identify the movement(s) occurring"]
    C --> D["Identify the plane of movement"]
    D --> E["Identify the axis of rotation"]
    E --> F["Identify the lever class"]
    F --> G["Describe the mechanical advantage"]

    style A fill:#4a90d9,color:#fff
    style D fill:#e67e22,color:#fff
    style E fill:#9b59b6,color:#fff
    style G fill:#27ae60,color:#fff

Exam Tip: In an extended-response question (e.g., 6 marks), covering all of these elements demonstrates comprehensive understanding and will maximise your marks. Use the framework as a checklist.

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Quick Reference: Plane-Axis-Movement Combinations

Plane	Axis	Movements	Key Word	Sporting Example
Sagittal	Transverse	Flexion, extension	Forward/backward	Running, kicking, bicep curl, somersault
Frontal	Frontal	Abduction, adduction	Side-to-side	Star jump, cartwheel, goalkeeping save
Transverse	Longitudinal	Rotation	Twisting	Golf swing, discus spin, pirouette

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Worked Example 1: Kicking a Football

Movement Analysis

Element	Detail
Sporting action	A footballer kicking a ball (striking phase)
Joint	Knee
Movement	Extension (straightening the lower leg)
Plane	Sagittal (the leg moves forward)
Axis	Transverse (the lower leg rotates around a side-to-side axis at the knee)
Lever class	Third class (F-E-L: fulcrum at knee, effort from quadriceps near the knee, load at the foot)
Mechanical advantage	Low — the effort arm is shorter than the load arm, producing high speed at the foot

Exam-Style Written Response

"The kicking action involves extension at the knee joint. This movement occurs in the sagittal plane around the transverse axis. The knee acts as a third class lever with the fulcrum at the knee joint, the effort provided by the quadriceps (inserting close to the knee), and the load at the foot. This lever system has a low mechanical advantage, which is beneficial because it produces high speed at the foot, resulting in a powerful kick."

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Worked Example 2: A Star Jump (Jumping Jack)

Movement Analysis

Element	Detail
Sporting action	The outward phase of a star jump
Joints	Shoulder and hip
Movement	Abduction (arms and legs move away from the midline)
Plane	Frontal (limbs move side to side)
Axis	Frontal (limbs rotate around a front-to-back axis at the shoulder and hip)
Lever class	Third class at the shoulder (fulcrum at shoulder, effort from deltoid, load = weight of arm)
Mechanical advantage	Low — produces speed and range of movement for the outward jump

Exam-Style Written Response

"During a star jump, the arms and legs perform abduction — moving away from the midline of the body. This occurs in the frontal plane around the frontal axis. At the shoulder, this operates as a third class lever: the fulcrum is the shoulder joint, the effort is provided by the deltoid (inserting on the humerus near the shoulder), and the load is the weight of the arm. The low mechanical advantage produces the speed needed for the explosive outward movement."

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Worked Example 3: A Golf Swing

Movement Analysis

Element	Detail
Sporting action	The trunk rotation during a golf swing
Joint	Hip / vertebral column
Movement	Rotation (trunk twists)
Plane	Transverse (rotational movement)
Axis	Longitudinal (the body rotates around a vertical axis from head to feet)

Exam-Style Written Response

"The golf swing involves rotation of the trunk around the spine. This occurs in the transverse plane around the longitudinal axis. The golfer twists their hips and shoulders to generate rotational force, which is transferred through the arms to the club and ultimately to the ball. The rotational movement in the transverse plane is essential for generating the club head speed needed for a long drive."

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Worked Example 4: A Somersault in Gymnastics

Movement Analysis