Problem solving approach to biomechanics
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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

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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)?


Problem solving approach to biomechanics

  • 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


Problem solving approach to biomechanics

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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