Definitions
Ch 1
Ch 1
Definitions
Ch 2
Ch 2
Definitions
Ch 3
Ch 3
1
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.
1
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.
1
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.
1
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.
1
Fulcrum
Book: An axis or hinge about which a lever rotates.
The axis of rotation; typically a joint (pivot point).
1
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.
1
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.
1
Anatomical Reference Position
Book: Standing erect, all body parts facing forward, including the palms of the hands.
1
General Motion
Book: Combination of linear and angular motion.
Human motion is best described as this.
2
Linear Kinetics
Book: An analysis of human movement that measures forces, inertia, and energy.
The study of forces causing motion in a straight line.
2
What is the best way to view each plane?
Sagittal plane - side.
Frontal (Coronal) - front.
Transverse - top.
2
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.
2
Who is the founder of modern day biomechanics?
Aristotle
2
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.
2
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.
2
Chronophotography
A series of photos in a chronological order used to break down motion.
2
What axis goes through each plane?
Sagittal plane - Transverse axis.
Frontal (Coronal) plane - Anteroposterior axis.
Transverse plane - Longitudinal axis.
2
Phasic Time
Labels on the movements broken up frame by frame.