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Problem Solving Approach to Biomechanics. Proper decision making  desired outcome. Problem Solving Approach to Biomechanics. Good problem solving involves an approach that is: Efficient Systematic Structured troubleshooting. Types of Analysis.

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problem solving approach to biomechanics
Problem Solving Approach to Biomechanics

Proper decision making desired outcome

problem solving approach to biomechanics1
Problem Solving Approach to Biomechanics

Good problem solving involves an approach that is:

Efficient

Systematic

Structured

troubleshooting

types of analysis
Types of Analysis
  • Qualitative – Involves a non-numerical description.
  • “Tiger Woods wants to move a boulder that is heavy.”
  • Quantitative – Involves the use of numbers.

“The boulder Tiger Woods wants to move weighs 750 pounds.”

solving qualitative problems
Solving Qualitative Problems
  • Is the movement being performed with proper or adequate force?
  • Is the movement being performed through an appropriate range of motion?
  • Is the sequence (or pattern) of body movements appropriate (or optimal) for the execution of the skill?
  • Qualitative data may be collected based on:
    • Observation
    • Knowledge of skill technique
axis of rotation
Axis of Rotation
  • All movement occurs through rotation around joint(s), body segments (ex. lower arm)
  • Axis of rotation - imaginary line around which rotation occurs; perpendicular to plane in which movement occurs
qualitative application of biomechanical principle
Qualitative Application of Biomechanical Principle
  • KINEMATIC LINK
    • Whole body multi-joint movements
      • Basketball free throw
      • Tennis serve
      • Golf swing
      • Softball swing of bat
    • Whip-like effect
    • Most central joint moves --> peripheral joint moves
    • EX. Basketball shot
      • Hip/knees --> shoulders/elbow --> wrist
qualitative application of biomechanical principle1
Qualitative Application of Biomechanical Principle
  • KINEMATIC LINK
    • Whip-like effect
    • Most central joint moves --> peripheral joint moves
    • EX. Basketball shot
      • Hip/knees --> shoulders --> elbow --> wrist
qualitative application of biomechanical principle2
Qualitative Application of Biomechanical Principle
  • KINEMATIC LINK
    • Whip-like effect
    • Most central joint moves --> peripheral joint moves
    • EX. Softball swing
      • Hips/upper body --> shoulders --> elbow --> wrist/forearm
qualitative application of biomechanical principle3
Qualitative Application of Biomechanical Principle
  • KINEMATIC LINK - Whip-like effect
    • Most central joint moves --> peripheral joint moves
    • EX. Soccer kick
      • Hips (flexion,rotation) --> knee (extension)
qualitative application of biomechanical principle4
Qualitative Application of Biomechanical Principle
  • KINEMATIC LINK - Whip-like effect
    • Most central joint moves --> peripheral joint moves
    • EX. Soccer kick
      • Hips (flexion,rotation) --> knee (extension)
qualitative application of biomechanical principle5
Qualitative Application of Biomechanical Principle
  • KINEMATIC LINK - Whip-like effect
    • Most central joint moves --> peripheral joint moves
    • EX. Soccer kick
      • Hips (flexion,rotation) --> knee (extension)
qualitative application of biomechanical principle6
Qualitative Application of Biomechanical Principle
  • KINEMATIC LINK - Whip-like effect
    • Most central joint moves --> peripheral joint moves
    • EX. Soccer kick
      • Hips (flexion,rotation) --> knee (extension)
qualitative application of biomechanical principle7
Qualitative Application of Biomechanical Principle
  • KINEMATIC LINK - Whip-like effect
    • Most central joint moves --> peripheral joint moves
    • EX. Soccer kick
      • Hips (flexion,rotation) --> knee (extension)
qualitative application of biomechanical principle8
Qualitative Application of Biomechanical Principle
  • KINEMATIC LINK - Whip-like effect
    • Most central joint moves --> peripheral joint moves
    • EX. Soccer kick
      • Hips (flexion,rotation) --> knee (extension)
qualitative application of biomechanical principle9
Qualitative Application of Biomechanical Principle
  • KINEMATIC LINK - Whip-like effect
    • Most central joint moves --> peripheral joint moves
    • EX. Soccer kick
      • Hips (flexion,rotation) --> knee (extension)
qualitative application of biomechanical principle10
Qualitative Application of Biomechanical Principle
  • KINEMATIC LINK - Whip-like effect
    • Most central joint moves --> peripheral joint moves
    • EX. Soccer kick
      • Hips (flexion,rotation) --> knee (extension)
qualitative application of biomechanical principle11
Qualitative Application of Biomechanical Principle
  • KINEMATIC LINK - Whip-like effect
    • Most central joint moves --> peripheral joint moves
    • EX. Soccer kick
      • Hips (flexion,rotation) --> knee (extension)
qualitative application of biomechanical principle12
Qualitative Application of Biomechanical Principle
  • KINEMATIC LINK - Whip-like effect
    • Most central joint moves --> peripheral joint moves
    • EX. Soccer kick
      • Hips (flexion,rotation) --> knee (extension)
qualitative application of biomechanical principle13
Qualitative Application of Biomechanical Principle
  • KINEMATIC LINK - Whip-like effect
    • Most central joint moves --> peripheral joint moves
    • EX. Soccer kick
      • Hips (flexion,rotation) --> knee (extension)
qualitative application of biomechanical principle14
Qualitative Application of Biomechanical Principle
  • KINEMATIC LINK - Whip-like effect
    • Most central joint moves --> peripheral joint moves
    • EX. Soccer kick
      • Hips (flexion,rotation) --> knee (extension)
qualitative application of biomechanical principle15
Qualitative Application of Biomechanical Principle
  • KINEMATIC LINK - Whip-like effect
    • Most central joint moves --> peripheral joint moves
    • EX. Soccer kick
      • Hips (flexion,rotation) --> knee (extension)
qualitative application of biomechanical principle16
Qualitative Application of Biomechanical Principle
  • KINEMATIC LINK - Whip-like effect
    • Most central joint moves --> peripheral joint moves
    • EX. Soccer kick
      • Hips (flexion,rotation) --> knee (extension)
qualitative application of biomechanical principle17
Qualitative Application of Biomechanical Principle
  • KINEMATIC LINK - Whip-like effect
    • Most central joint moves --> peripheral joint moves
    • EX. Soccer kick
      • Hips (flexion,rotation) --> knee (extension)
qualitative application of biomechanical principle18
Qualitative Application of Biomechanical Principle
  • KINEMATIC LINK
    • Whip-like effect
    • Most central joint moves --> peripheral joint moves
    • EX. Golf shot
      • Hips --> shoulders --> wrist
formal problem solving method
Formal Problem Solving Method
  • Given a set of information or data EXAMPLE: An ACL requiring reconstruction
  • Establish a goal or desired result
  • EXAMPLE: Regain strength, stability, and range of motion
  • Implement a procedure or process to achieve the goal
  • EXAMPLE: Surgery followed by therapeutic rehabilitation
format for quantitative problem solving
Format for Quantitative Problem Solving
  • GIVEN:List the known data and conditions.
  • FIND:Formally state the goal of the solution.
  • DIAGRAM: draw a model representing movement, forces, etc.
  • FORMULAS:List the formulas to be used and any inferred or derived information.
  • SOLUTION:Actual steps in solving the problem. Solve for unknown variables.
  • ANSWER:Draw a box around the final answer.
illustration of problem solving format
Illustration of Problem Solving Format
  • HEB is selling 15 oz boxes of Apple Cinnamon Toasted Oats cereal for $2.45. Cheerios Apple Cinnamon cereal in a 20 oz box is $3.90. If you have a coupon for $1.00 off of the Cheerios Apple Cinnamon brand, which is the better deal (price/oz)?
slide28
GIVEN:
  • HEB Toasted Apple Cinnamon Cereal:price = $2.45 size = 15 oz
  • Cheerios Apple Cinnamon Cereal:
  • price = $3.90 size = 20 oz coupon value = $1.00 off
  • FIND:
  • Better deal (lower unit cost)
  • FORMULA:
  • unit cost = price / size
  • Derived Information:
  • Cheerios price = store price – coupon value
slide29

SOLUTION:

HEB unit cost = $2.45 / 15 oz = $0.163/oz

Cheerios unit cost = ($3.90 - $1.00) / 20 oz = $0.145/oz

Cheerios has the lower unit cost.

Quantitative solution

Qualitative answer

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