Chap 5 & 6 Flashcards
Distraction
separating the joint surface
Grade I
small amplitude rhythmic oscillations are performed at the beginning of the range. Rapid oscillations
Grade II
Large-amplitude rhythmic oscillations are preformed within the range, not reaching the limit. They are usually performed at 2 or 3 per second for 1 to 2 min
Grade III
Large amplitude rhythmic oscillations are performed up to the limit of the available motion and are stressed into the tissue resistance. They are performed at 2 or 3 per second for 1 to 2 min
Grade IV
Small amplitude rhythmic oscillations are performed at the limit of the available motion and stressed into the tissue resistance
Grade I and II primarily used for
treating joints limited by pain or muscle guarding. Oscillations may have an inhibitory effect on the perception of painful stimuli
Grade III and IV are primarily used for
Stretching maneuvers
Grade I non Thrust sustained joint play
small amplitude distraction is applied when no stress is palced on the capsule.
Grade II sustained joint play
enough distraction or glide is applied to tighten the tissue around the joint.
Grade III sustained joint play
distraction or glide is applied with amplitude large enough to place stretch on the joint capsule and surrounding periarticular structures.
what % of muscle accounts for body weight at birth
25
which age muscle mass peaks men and women respectively
men 18-25
women 16-20
what age mm mass start decrease?
25
rate of decline of mm strength accelerates to what %
15% to 20%
broad term that refers to the ability of contractile tissue to produce tension and a resultant force based on the demands placed on the mm
muscle strenght
another aspect of mm performance. Related to the strength and speed of movement and is defined as the work (force x distance) produced by a muscle per unit of time (force x distance/time). It is the rate of performing work
Muscle power
increasing the work a muscle must perform during a specified period of time or reducing the amount of time required to produce a given force.
Power training
What are examples of power training
plyometric training, stretch-shortening drills
what kind of endrurance is repetitive, dynamic motor activities such as walking, cycling, swimming
cardiopulmonary endurance (total body endurance)
What kind of endurance is the ability of a muscle to contract repeatedly against load over an extended period of time
Muscle endurance/local endurance
SAID principle
Specific adaptation to imposed demand. a frame work of specificity is a necessary foundation on which exercise programs should be built
Wolff’s law
body systems adapt over time to the stress placed on them
Type I mm fibers
slow twitch, tonic, found in postural mm for long endurance activity
Type II mm fibers
Fast twitch, phasic, generate a great amount of tension within a short period of time
physiological adaptation to resistance exercise - neural adaptations
increased recruitment in the number of motor units firing as well as an increased rate and synchronization of firing
Physiological adaptation to resistance exercise, skeletal mm adaptations 3 stages
Hypertrophy: increase in the size of an individual mm fibers
Hyperplasia: increase in the number of mm fibers
Muscle fiber type adaptation
vascular and metabolic adaptations
for athletes who participate in heavy resistance training have more/fewer capillaries per mm fibers?
fewer. Endurance athletes will have more because of an increase in nn of myofilatments per fiber
repetition maximum (RM)
is defined as the greatest amount of weight a muscle can move through the full available ROM with control a specific number of times before fatiguing
To improve mm strength
3 sets of 10 RM performed for 10 repetitions over the training period led to gain in strength
To improve mm endurance
performing many repetitions of an exercise against a submaximal load such as 3-5 sets of 40 reps against a low amount of weight
Exercise order
large mm groups should be exercised before small mm groups, and multi joint exercises should be performed before single joint exercise
concentric mm contraction
during maximum effort concentric mm contractions as the elocity of mm shortening increases, the force the mm can generate decreases..
eccentric mm contraction
velocity of active mm lengthening increases, force production in the muscle initially increases to a point then quickly level off
Rehab training order
isometric - eccentric - concentric
what is eccentric training good for
rehabilitation, preventing risk of reinjury for high intensity deceleration, quick change direction, sport related physical performance as well as injury or surgery
overtraining
decline in physical performance in healthy individuals participating in high intensity, high volume strength and endurance training programs, chronic fatigue, staleness, burnout
overwork
or overwork weakness
progressive deterioration of strenght in mm already weakened by nonprogressive neuromuscular disease. such as polio
Traction
pulling on long bone along axis