Definitions
Ch 1
Ch 1
Definitions
Ch 2
Ch 2
Definitions
Ch 3
Ch 3
100
Biomechanics
Book: A science that studies the effects of energy and forces on the motion of living organisms.
Lecture: The study of the structure and function of biological systems by means of the methods of mechanics.
100
Explain the acronym A R F for each class of lever.
1st class: Axis is between the resistance and the force.
2nd class: Resistance is between the axis and the force.
3rd class: Force is between the axis and the resistance.
100
Kinematics
Book: Describes motion; how something is moving.
Lecture: Describing and analyzing motion without considering the causes of motion (forces); i.e. position, time, velocity, acceleration.
200
Qualitative
Book: A measure that subjectively describes the quality of the sport skill. These terms are more descriptive than objective.
Lecture: Describing the characteristics, properties, or attributes without using numerical measurements.
200
Fulcrum
Book: An axis or hinge about which a lever rotates.
The 'A' in ARF. The axis of rotation; typically a joint (pivot point).
200
Kinetics
Book: Describes the forces that create motion or are generated from moving.
Lecture: Understanding and describing the causes of motion (forces); i.e. force.
300
Quantitative
Book: A measure that subjectively describes the quality of the sport skill. These terms are more descriptive than objective.
Lecture: Measuring and expressing something using numbers. The amount, value, relationship, and calculation.
300
Anatomical Reference Position
Book: Standing erect, all body parts facing forward, including the palms of the hands.
300
General Motion
Book: Combination of linear and angular motion.
Human motion is best described as this.
400
Linear Kinetics
Book: An analysis of human movement that measures forces, inertia, and energy.
The study of forces causing motion in a straight line.
400
What is the best way to view each plane?
Sagittal plane - side.
Frontal (Coronal) - front.
Transverse - top.
400
Distance vs Displacement
Distance: Scalar (magnitude without direction). A measurement of the length of the path traveled by an object from one point to another.
Displacement: Vector (magnitude and direction). Represents the change in position from one point to another in space.
The total area covered within a motion vs shortest place between start and finish.
500
Who is the founder of modern day biomechanics?
Aristotle (384–322 BC) with De Motu Animalium “On the Motion of Animals”.
500
What are the three planes and how do they divide the body?
Sagittal plane - Right and left.
Frontal (Coronal) plane - Anterior and posterior.
Transverse plane - Superior and inferior.
500
Validity vs Reliability
Validity: How well (accurate) the measure is com-pared to what is being measured.
Reliability: A term to describe the level of accuracy or dependability of a measure.
Does the measurement measure what the intended variable relates to vs can measurement be repeated to provide a consistent result.
600
Chronophotography
A series of photos in a chronological order used to break down motion. Created by Etienne Jules Marey (1894).
600
What axis goes through each plane?
Sagittal plane - Transverse axis.
Frontal (Coronal) plane - Anteroposterior axis.
Transverse plane - Longitudinal axis.
600
Phasic Time
Labels on the movements broken up frame by frame.