Biomechanics - Intro to Video Data Collection Flashcards
(Knudson 2013) Four task model?
1.) Preparation
2.) Observation
3.) Evaluation and diagnosis
4.) Intervention
(Cyclical)
(example for deterministic model) What is the goal of movement for a tennis serve? What will it require?
To gain an advantage by making it difficult for the opponent to return the ball.
Requires a fast serve within the court in different locations.
(example for deterministic model) How is the goal of movement for a tennis serve achieved?
Velocity of ball at release.
Speed due to speed of racket (and ball) at contact.
Direction due to angle of racket and ball at contact.
Velocity?
Speed and direction.
What are critical features related to in relation to the deterministic model?
The technique that is required for the goal of movement to be achieved.
How many critical features should there be when analysing a movement?
Between 4-8.
(example for critical features) Rationale for grip being a critical feature for a tennis serve?
Determines the path of the racket and forearm/wrist action.
(example for critical features) Rationale for toss being a critical feature for a tennis serve?
Determines timing and proper racket path.
(example for critical features) Rationale for racket preparation being a critical feature for a tennis serve?
Affects timing and speed of the racket.
(example for critical features) Rationale for continuous being a critical feature for a tennis serve?
(Sequential coordination pattern) Determines effective ball trajectory.
(example for critical features) Rationale for follow through being a critical feature for a tennis serve?
Maximises racket speed and protects the body.
(example for critical features) Rationale for stance being a critical feature for a tennis serve?
Affects balance, accuracy and development of racket speed.
How does grip as a critical feature relate to biomechanical principles?
(B5) Is the athlete applying force in the correct direction?
How does toss as a critical feature relate to biomechanical principles?
(P1) Flight and projectile motion.
How does follow through as a critical feature relate to biomechanical principles?
(F2) Range of motion.
(B4) Is the athlete applying the right amount of muscular force over the appropriate time and distance?