Gait (yet again) and Task Analysis: the crap she's totally going to put on the test that we've all forgotten about | Quizlet

What are the determinants of a movement/task?

Element or aspect of task that is critical to successful performance

What are the five steps of the task analysis framework?

1. Select Task

2. Define Task (what are the determinants)

3. Observe Task (movement continuum)

4. ID deviations from "typical" version of task

5. Hypotheses: What could be the impairments causing these deviations?

What are the stages of the movement continuum (sequence and critical events of the task)?

Initial condition

Preparation

Initiation

Execution (can be broken into parts)

Termination

Outcome

What are the three components of a movement (venn diagram)

Person, Environment, Task

What are the components of the "person" portion of the movement?

Cognitive

Behavioral

Physical

T/F: The COP can be outside the BOS

False, center of pressure is always inside base of support

T/F: The COM can be outside the BOS

True, when center of mass is outside base of support we're unstable; this is when we need to make adjustments so we don't fall

At what point in the examination framework does task analysis come in?

After Systems Review, during Movement screen, before Initial Hypothesis

What are some observable constructs of movement that can be used to describe a movement?

Symmetry

Speed

Amplitude

Postural Control

Coordination

Symptom Provocation

What are some areas of impairments that could come up in hypotheses for deviations observed?

-Passive Mobility/Flexibility: Contractile, non-contractile, joint integrity

-Muscle Performance: Power, strength, endurance

-Movement Coordination: Sensory, Joint motion control, muscle recruitment, agility

-Metabolic Energy Systems: aerobic/anaerobic capacity

During which phase of gait are ankle dorsiflexors maximally active, and what type of activity?

Loading response, eccentric

During which phase of gait are ankle plantarflexors maximally active, and what type of activity?

Terminal stance, eccentric

During which phase of gait are knee extensors maximally active, and what type of activity?

Loading response, eccentric

During which phase of gait are knee flexors maximally active, and what type of activity?

Terminal swing, eccentric

During which phase of gait are hip extensors maximally active, and what type of activity?

loading response, eccentric

During which phase of gait are hip flexors maximally active, and what type of activity?

Preswing/Initial Swing, concentric

What is the foot progression angle, and how is it measured?

Angle the foot turns outward during walking; measured with angle from line of progression of body and line from mid-heel to second toe, normal is 10-14 degrees

What is the average cadence for an adult human?

115 steps/min

During weight acceptance, what is the hip external demand?

Flexion (peak) and adduction

During single limb support, what is the hip external demand?

Flexion, then large extension (peak) and adduction