Qualitative Biomechanical Analysis to Improve Training

Objectives:
  • Distinguish between technical training and physical training
  • Understand how the results of a qualitative analysis to improve technique may also be used to improve technical training
  • Evaluate a technical exercise or drill and determine whether it is approriate
  • Describe the steps involved in a qualitative anatomical analysis
  • Identify the active muscle groups during any phase of a human movement and whether their contraction is concentric, eccentric, or isometric


Technical and Physical Training

Questions to consider:

  • What is the purpose of the drill or exercise?
  • What aspect of the skill is it specific to?
  • Are the joint positions, velocities, and ranges of motion of the exercise similar to those of the skill?
  • Are the muscle forces and contraction velocities similar?
  • Are the external forces similar?

Why not just perform the activity for training?

Qualitative Anatomical Analysis Method
  • Determine the predominant muscular activity
  • Identify instants when large stresses may occur due to large muscle forces or extremes in joint ranges of motion

  • Inverse dynamics
    1. Divide the activity into temporal phases
    2. Identify the joints involved and the movements occurring at those joints
    3. Determine the type of muscular contraction and identify the predominant active muscle group at each joint
    4. Identify instances when rapid joint angular accelerations occur and where impacts occur
    5. Identify any extremes in joint ranges of motion
  • Chart the analysis
Examples:
Vertical Jump
Football Punt
Sprinting