Step 1: Understanding the Concept:
Postural deformities require medical or therapeutic intervention. While PE teachers can identify issues, the actual treatment through corrective exercise involves medical expertise to avoid further injury.
Step 2: Detailed Explanation:
1. Corrective exercises are prescribed to fix structural or functional deformities (like Scoliosis or Bow Legs).
2. A Physician diagnoses the severity of the condition.
3. A Physiotherapist is a trained medical professional who specializes in musculoskeletal movements and supervises the specific mechanics of the exercises.
4. While PE teachers assist, the primary "advice" must come from medical specialists.
Step 3: Final Answer:
The exercises must be done under the advice of a Physician or Physiotherapist.