Department

Kinesiology & Physical EducationCourse Code

KP122Professor

Quincy AlmeidaLecture

12This

**preview**shows page 1. to view the full**5 pages of the document.**Interesting Applications of Biomechanics 2015-02-12

Biomedical engineering for improvement of gait for those with below knee amputations

Using prostheses creates added metabolic demand

Important for young and elderly

Solution: Prostheses that return mechanical energy

Reduce need for metabolic energy

Biomechanics in Sport:

Design of equipment for sport

Ski Boots:

Modern ski boots are designed to protect ankles, but since 1972 have resulted in triple the number of knee

injuries

The ‘Klapskate’ for speed-skating

Hinge at tow

Introduced in 1998 winter Olympics

5% higher skating velocities

All speed-skating world records broken

Wind tunnels have allowed study for air resistance

Helmet, clothing and cycle design

Baseball Pitching:

High velocity pitchers display

Greater external rotation at the shoulder

Greater forward trunk tilt at ball release

Higher extention angular velocity at the lead knee

Greater angular velocity of the pelvis and upper torso than lower velocity pitchers

Discus:

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Funding for athlete efficiency since 1981

Speed of discus at release

Projection angle at release

Height above ground

Angle of attack (relative to air current)

Methods for Solving Quantitative Problem:

Read the problem carefully

Listen to given information

List the unknown information for which you want to solve

Draw a diagram of the problem situation showing the known and unknown information

Write down formulas that may be of use

Identify the formula to use

If necessary, reread the problem statement to determine whether any additional needed information can be

inferred

Carefully substitute the given information into the formula

Solve the equation to identify the unknown variable (desired information)

Check that the answer is both reasonable and complete

Clearly box the answer and write a conclusion statement

?=10/5m-s

=2 seconds

2 seconds for the pitcher

? = 15/9m-s

=1.6667 seconds for the runner to make it home

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