Chapter 1 Flashcards
muscular imbalances
The alteration of a muscles length that surrounds a joint
How are muscular imbalances caused?
Muscular imbalances are caused by a variety of different things including emotional duress, repetitive movements, bad training techniques, the lack of neuromuscular efficiency, poor core strength, cumulative trauma and stress caused by postural problems.
Obesity vs. Overweight
Being overweight is considered having a BMI index between the ranges of 25 and 29.9 and between 25 and 30 pounds over the recommended height to weight ratio. Being obese is considered having a BMI of 30 or more with at least 30 pounds overweight for the height to weight ratio.
proprioception
Proprioception is the cumulative input into the central nervous system coming from the various Mechanoreceptors in the body that sense limb movement as well as body position. For example, while running your feet send proprioceptive feedback depending on the type of surface you are running on.
proprioceptive enriched environments
These are unstable environments that are controlled. These challenge one’s Internal balance and stabilization.
OPT training model brief definition
systematic training approach that builds on itself and the general phases of stabilization, strength, and power.
Nervous system
the communication network within the body
central nervous system CNS
brain and spinal cord, coordinates activity of the body
peripheral nervous sytem PNS
nerves connecting the CNS to the rest of the body and environment
Somatic peripheral nervous system
serves outer areas of the body and skeletal muscle voluntary
autonomic peripheral nervous system
involuntary systems such as heart and digestion
subdivisions of autonomic nervous system
parasympathetic and sympathetic
parasympethetic
decreases activation during rest and recovery “rest and digest”
sympathetic
increases activation to prep for activity “fight or flight”
neuron
functional unit of the nervous system
motor efferent neurons
transmit nerve impulses from CNS to effector sites
Sensory afferent neurons
respond to stimuli transmit nerve impulses from effector sites to CNS
mechanoreceptors
sense distortion in body tissues
joint receptors
respond to pressure, acceleration and deceleration of joints
golgi tendon organs
sense changes in muscular tension
muscle spindles
sense changes in muscle length
tendons
connect muscle to bone, provide an anchor for muscles to produce force
fascia
outer layer of connective tissue surrounding a muscle
fascicles
bundles of individual muscle fibers
muscle fiber
cellular components and myofibrils encased in a plasma membrane
sarcomere
produces muscular contraction; repeating sections of actin and myosin