Basic Notes From Study Guide Flashcards
Kinetic chain
Interrelation of nervous, muscular and skeletal systems to create movement
CNS
Central nervous system
—brain and spinal cord
—coordinates activity of all body parts
PNS
Peripheral nervous system
—all nerves branching off spinal cord - extending out to the body
Mechanoreceptors
Sense distortion in body tissues
1. Golgi tendon organs (GTO)
—sense changes in tension
- Muscle spindles
—sense changes in length
Proprioception
Cumulative sensory input to the CNS from all mechanoreceptors
Stabilization muscles of the core
—transverse abdominis
—multifidus
—internal obliques
—diaphragm
—pelvic floor muscles
—rotator cuff
—external obliques
—quadratics lumborum
—psoas major
—rectus abdominis
—gluteus medius
—adductor complex
Movement muscles of the core
—latissimus dorsi
—hip flexors
—hamstring complex
—quadriceps
—pectoralis major
—deltoid
—gluteus Maximus
—triceps
—biceps
—erector spinae
Tendons
—connect muscle to bone
—anchor to produce force
—limited blood flow = slow to repair
Sarcomeres
Individual contractile units
—actin and myosin filaments
Type 1 (slow twitch) muscle tissue
More aerobic
—slower to reach maximal contraction
—resistance to fatigue
Type II (fast twitch) muscle tissue
More anaerobic
—produce more speed and strength
—faster to fatigue
Behavioral properties of muscle
- Extensibility
- Elasticity
- Irritability
- Ability to develop tension
Quadriceps
Rectus femoris, castes lateralis, medialis, intermedius
—isolated function: knee extension
—common exercise: squat - upward phase
Hamstrings
—semitendinosus, semimembranosus, biceps femoris
—IF: knee flexion
—CE: hamstrings curl
Gastrocnemius
One of calf muscles
—IF: plantar flexion
—CE: calf raise
Gluteus Maximus
—IF: hip extension and external rotation
—CE: lunge (upward phase)
Rectus abdominis
—spinal flexion, lateral flexion, and rotation
—ball crunch
Pectoralis major
—shoulder flexion and horizontal adduction
—push-up
Latissimus dorsi
—shoulder extension, adduction and internal rotation
—band row
Biceps
—elbow flexion
—biceps curl
Triceps
—elbow extension
—triceps extension
Ligaments
—connect bone to bone
—limited blood flow
—slow to repair
Axial skeleton
Skull, rib cage, and vertebral column
Appendicular skeleton
Bones of upper and lower extremities
Skeletal system functions
- Movement
- Support
- Protection
- Blood production
- Mineral storage
Picture of joints
—non-synovial
No joint cavity or connective tissue - little to no movement
—sutures of the skull
Synovial joints
Produces synovial fluid
—has joint cavity and connective tissue
—all of the following 6 joint types are synovial
Gliding joints
No axis of rotation; slides side-to-side and back-and-forth
—carpals of hand
Condyloid joint
—condyles of one bone fit elliptical cavities of another - one plane of motion
—knee
Hinge joint
—uniaxial; one plane of motion
—elbow
Saddle joint
—one bone fits like a saddle on another; two planes of motion (sagittal; frontal)
—thumb - (only ones in body)
Pivot joints
One axis; transverse plane movement
—radioulnar
Ball and socket joint
—most mobile - all 3 planes of motion
—shoulder
Exercise and bone connection
Has been shown to reduce bone mass loss and increase bone mineral density
—know vertebrae of spinal column
Atria
Atria - superior chambers - receive blood from outside heart
Right atrium - gathers deoxygenated blood from body
Left atrium - gathers oxygenated blood from lungs
Ventricles
Ventricles - inferior chambers; force blood out of heart
Right ventricle - pumps deoxygenated blood to lungs
Left ventricle - pumps oxygenated blood to body
Sinotrial SA node
Located in right atrium
—rec. signal to contract
—“pacemaker of heart”
Arteries vs veins
Arteries - transport blood away from heart
Veins - transport blood toward heart
Stroke volume
Amount of blood pumped with each contraction
Hart rate
Rate at which heart bumps
—avg. is 70-80 bpm
Functions of blood
- Transportation
- Regulation
- Protrection
Respiratory pump
Components that move air in and out of the body
Bone structures of the respiratory pump
—sternum
—ribs
—vertebrae
Muscle structures of the respiratory pump
—INSPIRATION
—Diaphragm
—external intercostals
—scalenes
—sternocleidomastoid
—pectoralis minor
Muscle structures of the respiratory pump
—EXPIRATION
—internal intercostals
—abdominals
Adenosine triphosphate (ATP)
Energy storage and transfer unit within cells
Anaerobic
Without oxygen
ATP-PC
Uses phospocreatine
—up to 10-15 seconds
Glycolysis
Uses glucose; up to 2-3 minutes
Aerobic
Requires oxygen
Oxidative system
—aerobic
—uses glucose, activity longer than 2-3 minutes
Plantar flexion
Extension at ankle — pointing toes
Dorsiflexion
Flexion at ankle — flexing foot
Examples of sagittal plane exercises
—biceps curl
—squat
—running
Examples of frontal plane exercises
—lateral arm raise
—side step
—side lunge
—side shuffle
Pronation
—eversion, dorsiflexion and abduction of feet
—weight on inside of foot
Supination
—inversion, plantar flexion, and adduction of feet
—weight on outside of foot
Example exercises of transverse plane
—trunk rotation
—bicycle crunches
—lunge with rotation
Length-tension relationship
Length at which muscle can create most tension
—too short or too long = reduced forced production
Force-couple
Muscles moving together to produce movement
Reciprocal inhibition
Agonist contracts while antagonist relaxes to allow movement
General adaptation syndrome
How the body responds and adopts to stress
Three phases
1. Alarm - initial response to exercise (2-3 weeks)
2. Adaptation - body adapts to stimuli - progression improvement (4-12 weeks)
3. Exhaustion - body can no longer tolerate demands of training - adaptations may halt - overtraining syndrome risk increases
SAID principle
Specific adaptation to imposed demands
—or principle of specificity
—the type of stimulus placed on body determines expected physiological outcome
- Mechanical specificity - weight and movements placed on body
- Neuromuscular specificity - specific exercises using different speeds
- Metabolic - energy demand placed on body
Overload principle
To create physiological change, exercise stimuli must be at a greater intensity than body is used to receiving
Concentric
Produces tension while shortening to overcome an external resistance
Isometric
Produces tension while maintaining constant length
Eccentric
Produces tension while lengthening
In chest press - (A, S, A)
Agonist - pectoralis major
Synergist - anterior deltoid & triceps
Antagonist - posterior deltoid
In row (A, S, A)
Agonist - latissimus dorsi
Synergist - posterior deltoid and biceps
Antagonist - pectoralis major
In squat (A, S, A)
Agonist - gluteus Maximus, quadriceps
Synergist - hamstring complex
Antagonist - psoas
Optimal dynamic posture in 5 kinetic chain checkpoints
- Feet: hip to shoulder width apart - pointed straight ahead
- Knees: soft and extended - in line w/ 2nd and 3rd toes
- LPHC: neutral - abs and glutes engaged
- Shoulders: back and down - no thoracic rounding
- Head/neck: cervical spine neutral
Neutral spine
Cervical, thoracic and lumbar curves of spine in good alignment
Kyphosis
Abnormal rounding of thoracic spine - usually accompanied by rounded shoulders
Lordosis
Sway back - excessive lumbar curve
Repetitive movement
Regularly repeated movements can alter kinetic chain
—elements of occupation and recreation
—ex. Carrying overloaded bags, wearing dress shoes, constant in-class jumping
Repetitive lack of motion
Frequent immobility
—holds potential for repetitive stress injuries
—ex. Sitting at desk all day
Overactive
Muscle is overly tense or tight during movement
Underactive
Muscle is weak - not being recruited as it should
Altered reciprocal inhibition
When overactive muscle decreases neural drive to functional antagonist
Postural distortion patterns
Common postural malalignments and muscle imbalances individuals develop based on a viceroy of factors (lifestyle, occupation)
- Pronation distortion syndrome
- Upper crossed syndrome
- Lower crossed syndrome
- Pronation distortion syndrome
Foot pronation (flat feet)
—addicted internally rotated knees (knock knees)
- Upper crossed syndrome
- Lower crossed syndrome
- Upper - forward head and rounded shoulders
- Lower - anterior tilt to pelvis - arched lower back
Common overactive and underactive muscles of
FEET
Overactive
—soleus
—lateral gastrocnemius
—peroneals
Underactive
—medial gastrocnemius
—anterior tibialis
—posterior tibialis
Common overactive and underactive muscles of
KNEES
Overactive
—biceps femoris (short head)
—tensor fascia latae (TFL)
Underactive
—Cassius medialis oblique (VMO)
Common overactive and underactive muscles of
LPHC
Overactive
—hip flexors (TFL, quads, psoas)
—adductors
—abdominals (rectus abdominis, external obliques)
Underactive
—gluteus maximumus
—gluteus medius
—hamstrings
—instrinsic core stabilizers
Common overactive and underactive muscles of
Shoulders
Overactive
—latissimus dorsi
—pectoralis major / minor
Underactive
—middle and lower trapezius
—rhomboids
—rotator cuff
Common overactive and underactive muscles of
Head and neck
Overactive
—upper trapezius
—sternocleidomastoid
—levator scapulae
Underactive
—deep cervical flexors
Integrated fitness
comprehensive approach combining multiple types of exercise; helps participant achieve higher levels of function; flexibility, core, balance, plyometric, SAQ, cardiorespiratory, and resis- tance trainin
Self-myofascial release
Apply pressure to “knots” (adhesions) to achieve relaxation response
—hold 30 seconds
Static stretching
Passively take muscle to point of tension - hold 30 seconds
Active stretching
Agonist moves limb through full range of motion allowing antagonist to stretch
Dynamic stretching
Multiplanar extensibility
—optimal neuromuscular control
—full range of motion
Drawing in maneuver
Core activation technique
—draw navel toward spine without spinal flexion
Bracing
Core activation technique
—co-contraction of superficial core muscles
—improves LPHC stiffness
Proprioceptively enriched environment
Balance training concept
—unstable, yet controllable
Dynamic balance
Maintain equilibrium through intended path of motion when external forces are present
Plyometric training
Quick, powerful movements
—eccentric contraction followed by explosive concentric contraction
Speed
Straight ahead velocity
Agility
Maintaining center of gravity over changing base of support while changing direction at various speeds
quickness
Reacting to stimuli with appropriate muscular response without hesitation