Lecture 5 - Biomechanical Measurement Technology Flashcards
what is the purpose of biomechanical measurement
to answer a question about the performer’s movement
- can you modify an aspect of the technique to improve performance
what is step rate
steps per second
when will step length be larger
if your taller
what is relative step length
someones step length divided by their height
what camera is necessary for specialised analysis
high speed cameras
what cameras are sufficient for most technique analysis, and what is their feature
standard video cameras
- with manual focus and exposure settings
what are smartphone / tablet cameras fine for
fine for informal technique analysis
what is the caution associated with smartphone / tablet cameras
- caution with wide angle lens
- caution with claims of app providers
what does 3D motion capture require
- at least 2 cameras
- calibration object
what can force plates tell us
output 3D forces and torques, 2D centre of pressure
in force plates volts (V) are converted to …
newtons (N)
examples of applications of force plates
- landing and take off forces
- joint loads
what are IMUs
Inertial measurement units
IMUs usually contain how many sensors and what are they
usually contain 3 sensors
- accelerometer
- gyroscope
- magnetometer
what does an accelerometer detect and what can it measure
- detect static (e.g gravity) and drynamic (e.g movement) forces
- can measure linear kinematics
