input vs output: role of neuromuscular control in performance

intrinsic factors of movement

- environment

- context

- cues

- previous exposure

- complexity

- symptoms

extrinsic factors of movement

- surface

- speed

- load

- BOS

- mobility

- stability

what is considered input for movement

mobility

- capsule, ligaments

*sensory influx to NS

- anterolateral or spinothalamic tracts, dorsal column

what is considered output for movement

stability

- muscles, corticospinal tracts

*motor control or performance dictated by processing of input

- corticospinal tracts

facilitators of output

- environment

- relevance

- appropriate load

- irradiation

- quick stretch

inhibitors of output

- confounding environment

- lack of context

- too much or too little load

- pain

- convoluted signal through poor verbal or tactile cues

motor skill acquisition variables

1. consistency

2. efficiency

3. flexibility

consistency variable

refers to repeatability of performance

- appropriate stress

- practice

- address dysfunctional drivers

flexibility variable

ability to adapt and modify task performance based on changing environments or conditions

- begin w/ basics -> add load -> variable training

efficiency variable

capabilities of CV and MSK systems

- phosphagen 0-10 sec

- anaerobic 0-60 sec

- aerobic 0-2+ min

the role of pain

- = inhibition

- does not equal tissue damage

- does not equal dysfunction free

- a warning sign

efficient feedforward mechanism

planned motor action -> intrinsic/extrinsic cue -> proximal stability -> distal mobility

anterior core end range inhibition testing

end range hip flex/add/ER

posterior core end range inhibition testing

end range hip ext/abd/IR

temporal summation

each rep increases motor unit recruitment

- each contraction builds on the last

- practice makes perfect

tonic spread

- use what you're good at to assist w/ what is poor

- come in low and slow, appropriate resistance

- turn your core on (irradiation)

overhead squat input tests

- ankle DF ROM

- quadruped sit back

- supine passive hip flexion

- thoracic wall axial elongation

- hooklying passive shoulder flexion

overhead squat output tests

- MMT DF/eversion

- standing HS lag test

- supine hip flex/add/ER test

- quadruped overhead lift off