Key facts

  • 7 April 1948, World Health Organization: the WHO Constitution came into force and defined health as physical, mental and social well-being, giving sch...
  • 1865, William Adams: the forward bend test was described for scoliosis screening, making visible trunk rotation and rib hump important practical signs...
  • 8 November 1895, Wilhelm Conrad Rontgen: the discovery of X-rays opened the way for radiographic assessment of spinal curves and bony alignment.
  • 1948, John Robert Cobb: the Cobb angle was described for measuring spinal curvature on radiographs, and it remains the standard numerical measure for...
  • 1949, Henry O. Kendall and Florence P. Kendall: Muscles: Testing and Function organised muscle testing and postural analysis for clinical and physical...

Key Points at a Glance

  1. 1

    7 April 1948, World Health Organization: the WHO Constitution came into force and defined health as physical, mental and social well-being, giving school physical education a broad health purpose beyond games alone.

  2. 2

    1865, William Adams: the forward bend test was described for scoliosis screening, making visible trunk rotation and rib hump important practical signs for teachers and trainers.

  3. 3

    8 November 1895, Wilhelm Conrad Rontgen: the discovery of X-rays opened the way for radiographic assessment of spinal curves and bony alignment.

  4. 4

    1948, John Robert Cobb: the Cobb angle was described for measuring spinal curvature on radiographs, and it remains the standard numerical measure for scoliosis severity.

  5. 5

    1949, Henry O. Kendall and Florence P. Kendall: Muscles: Testing and Function organised muscle testing and postural analysis for clinical and physical education use.

  6. 6

    1954, American College of Sports Medicine: ACSM was founded as a professional body linking physical education, medicine and exercise science for safer exercise prescription.

  7. 7

    1985, Katharina Schroth's legacy: the Schroth method remained associated with three-dimensional scoliosis-specific exercise, breathing correction and postural awareness after its founder's death.

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Meaning and principles of good posture

Posture is the position and alignment of body parts in standing, sitting, lying or movement. Good posture is not a stiff military pose; it is an efficient arrangement in which the head, spine, pelvis, knees and feet balance with minimum strain on muscles, ligaments and joints. In the standard standing view from the side, the line of gravity passes near the ear lobe, shoulder joint, hip joint, slightly in front of the knee and slightly in front of the ankle. From the front or back, the head is central, shoulders are level, the pelvis is even, knees face forward and body weight is distributed on both feet.

For an RSSB PTI paper, the main point is function. Correct posture permits economical movement, better breathing mechanics, lower fatigue and safer skill execution. Poor posture increases unnecessary muscle work and can disturb balance, flexibility, joint range and confidence. A PTI should observe posture in natural positions, not only in a single posed stance, because faulty habits often appear while sitting in class, carrying a bag, running, jumping or landing.

Exam link: good posture means balanced alignment with minimum effort, not exaggerated chest expansion or forced rigidity.

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