Chapter 9- prgm stability/mobility/movement Flashcards
What are CKC exercises?
Closed Kinetic Chain: these movements generally refer to exercises where either your hands or feet are fixed. Examples would include pull-ups, push-ups, or squats.
What’s the difference between static balance and dynamic balance?
Static balance is the ability to maintain the body’s center of mass within it’s base of support
Dynamic balance is the ability to move the bodies center of mass outside of its base of support while maintaining postural control.
What does COG stand for?
Center of gravity
What is LOS?
Limits of Stability: The degree of allowable sway away from the line of gravity that can be tolerated without a need to change the base of support (BOS)
When training a client for stability and mobility, what would the phrase “proximal stability promotes distal mobility,” mean?
It means that if the hips, trunk, and shoulder girdle are stable, it facilitates greater mobility of the legs and arms.
What is the kinetic chain?
Anatomically, the kinetic chain describes the interrelated groups of body segments, connecting joints, and muscles working together to perform movements and the portion of the spine to which they connect.
Starting from your foot, go up the kinetic chain of your body and know which parts are primarily for stability, and which parts are primarily for mobility.
Foot Ankle Knee Hip Lumbar Spine Thoracic Spine Scapulothoracic Region Glenohumeral (Shoulder)
Foot: STABILITY Ankle: MOBILITY Knee: STABILITY Hip: MOBILITY Lumbar Spine: STABILITY Thoracic Spine: MOBILITY Scapulothoracic Region: STABILITY Glenohumeral: MOBILITY
What can a lack of mobility lead to?
Compensated movements and potential losses to stability at subsequent joints. It will ultimately lead to dysfunctional movement.
What are antagonist and agonist muscles?
The agonist is a muscle that contracts to cause the movement. The antagonist is an opposing muscle that relaxes relatively to stretch. These two roles, agonist and antagonist, can be exchanged back and forth. To visualize this, let’s jump to our biceps and triceps example. Image waving at your best friend: when your hand is moving away from you, your triceps is an agonist, contracting to extend your arm. Your biceps is an antagonist, relaxing to allow elongation while possibly contracting ever-so-lightly to control the speed of that moving forearm.
What happens to a muscle in as little as 2-4 weeks after being held in a passively short position? (i.e. sitting hunched over a desk)
The muscles can shorten in length, reducing their force generating capacity.
What is the “force couple” relationship in muscles?
A force-couple relationship is the act of muscles or muscle groups moving together, in a synergistic manner, to produce movement around a joint.
one important example of a force couple relationship would be the deltoid and the rotator cuff muscles. When lifting your arm if the muscles did not work together (the deltoids pulling the humerus bone up, and the rotator cuff muscles connecting on the downward part of the bone) then the humerus bone would come out of the shoulder socket.
What is synergistic dominance?
This occurs when the muscles on either side of a joint are weak so other muscles must be called upon in order to produce the movement. Unfortunately this can overload the muscle that was used during compensation which can increase the likelihood for tightness and injury.
When beginning to train a client within the stability and mobility phase, Do you start with proximal stability within the core? Or would you begin with distal mobility within the arms and legs?
Proximal stability within the core! Once the individual demonstrates stability within the core, the program should progress to the hips and thoracic spine. Following this you would target stability of the scapula thoracic region. Last once stability and mobility of all the prior regions have been established, the program can enhance mobility and stability of the distal extremities. (Arms and legs)
What is a type 1 muscle fiber and what would be an example of a muscle that is primarily composed of type 1 fibers?
A type one fiber (also known as slow twitch muscle fibers) enhance a stabilizing muscle’s capacity for endurance. An example would be the core muscles that protect the spine during loading and movement throughout the day.
What is a type 2 muscle fiber and what would be an example of a muscle that is primarily composed of type 2 fibers?
Type 2 muscle fibers (also known as fast twitch) are primarily responsible for generating large forces. They are better suited for strength and power training. An example of this would be your bicep.
True or false? All of your muscles are composed of both fast and slow twitch fibers.
True!
Why would a powerlifter have more fast twitch fibers than a marathon runner who has more slow twitch fibers?
Because the powerlifter needs fibers that increase force output whereas the marathon runner needs fibers for endurance.
What are the four main types of stretching?
Ballistic, static, dynamic, myofascial
What type of stretching do you do DURING exercise?
Dynamic
What type of stretching do you do after exercise?
Static stretches or myofascial release
What type of stretching would you do prior to exercise?
If the client is deconditioned with poor flexibility and muscle imbalance, they should warm up with static stretches and myofascial release.
If the client is conditioned with good flexibility and muscle balance they should warm up with dynamic stretches and myofascial release.
If the client is an athlete with good skill and flexibility they should warm up with dynamic and ballistic stretches.
Martha is a 43-year-old female client who has been sedentary for 3 years. She demonstrates stability in her core but lacks proper mobility in her knees. which type of stretching would you recommend for Martha prior to exercise?
Myofascial release or static stretching
Jim is a semi-pro tennis player who regularly participates in strength and conditioning programs. What type of stretching would you encourage for Jim prior to exercise?
Dynamic and ballistic stretching
Katelyn is a beautiful 29-year-old female who is accustomed to working out and demonstrates good flexibility and muscle balance. What type of stretching would you encourage prior to exercise?
Myofascial release and dynamic stretches
What would be a natural progression of a programming sequence to promote stability and mobility within the body?
- Proximal stability of lumbar spine
- Proximal mobility of pelvis and thoracic spine
- Proximal stability of the scapula thoracic spine and mobility of the glenohumeral joint
- Distal mobility and stability of the distal extremities
- Static balance
Explain autogenic inhibition
When you stretch there is a temporary increase in muscle tension. After a few seconds your muscles have a response known as stress relaxation, and the Golgi tendon organ inhibits a response. Now that the tension is removed your muscles lengthen even further, This is an explanation for increases in range of motion temporarily after a stretching session. After terminating the stretching session your muscles quickly re-establish their old stretch threshold. However repeating this static stretch continuously over time will increase muscle extensibility.