Introduction to Resistance Training Flashcards
Describe overload principle
- resistance must exceed the metabolic capacity of the muscle
- for strength increase weight
- for endurance increase time of contraction or # of reps
Describe progressive overload
- gradually increase weight, frequency, and repetitions
Application of the overload principle must be done in the context of
- underlying pathology
- age of the patient
- stage of tissue healing
- patient response
- overall abilities & goals of the patient
Describe specific adaptation to imposed demands
- to improve a specific muscle performance, the resistance program should be matched to that elements constructs
Describe specificity of training
- the basis of specificity of training is related to morphological, metabolic, & neural adaptations to the training stimulus associated with motor learning
- improvement in muscle performance is highly specific to the training method employed
Describe reversibility principle
- adaptive changes are transient unless training induced improvements are regularly used or a maintenance program is established
Describe detraining effect
- reduction of muscle performance occurring 1-2 weeks post cessation of a resistance training program
What is tissue capacity
- capacity can indicate to clients that they are either able or unable to complete a task or complete a physical activity
- a tissue at full capacity = functional movements can be completed at the required volume & frequency without exacerbating symptoms or causing tissue injury
What is loading tissue
- external forces that exceed the metabolic capacity of a muscle (intensity x volume)
Rehab considerations for tissue capacity
- must load injured tissue properly to account for injury & facilitate for recovery
- cannot underlay adjacent areas to avoid reducing the capacity of those tissues
Contraindications for resistance training
- pain: severe joint or muscle pain during active movements
- inflammation/infammatory disease processes: acute Guillian-Barre, Polymyositis, dermatomyositis
- severe cardiac disease: postponed up to 12 wks after MI or CABG
Describe valsalva maneuver
- deep inspiration followed followed by closure of the glottis & contraction of the abdominal muscles
- concerns with geriatric clients
Precautions for resistance training
- valsalva maneuver
- substitution motions (form trumps intensity, “check ego”)
- overtrain & overwork
- exercise induced soreness
- pathological fracture: fracture related to history of osteoporosis or osteopenia, common in vertebra, femur, wrist, ribs
Precautions for acute muscle soreness
- during/directly after resistance training
- burning/aching in the muscle due to build up of metabolites/noxious waste stimulate free nerve endings
- resolves quickly
- treatment use a cool down
Precautions for delayed onset muscle soreness
- muscle ache 12-24 hrs post exercise, peaks at 48-72 hrs
- tender to palpation/stretch
- decreased ROM
- progress program gradually
- low intensity warm up/cool down
- keep load <70% of the patient’s 1 RM to avoid excessive DOMS
- treatment use low load “cyclic” activities
Describe isometric contractions
- muscle contracts & produces force without an appreciable change in the length of the muscle & without visible joint motion
- 20 times per day, 6-10 sec holds @ near max for improvements in isometric strength
Indications for isometric contractions
- minimize muscle atrophy & develop strength when joint motion is contraindicated
- re-establish neuromuscular control of healing tissues when motion is contraindicated
- develop strength at particular points in the ROM consistent with task needs
- appropriate for tissue healing, performance initiation/stability/motor control, & performance improvement phases of the exercise framework
Techniques for isometrics
- muscle setting
- stabilization exercise
- multiple angle isometrics
In what ROM can a person generate the most muscle tension
- mid range
Describe dynamic exercise
- Concentric: physical shortening of the muscle as external resistance is overcome, accelerates body segment
- Eccentric: muscle activation & tension production is below the level of external resistance so the muscle lengthens as it controls the load, decelerates body segment, greater loads can be controlled, & increased gains in muscle strength & mass
Describe eccentric exercise
- increases ROM
- increases strength
- treat tendinopathy: RTC (rotator cuff), lateral epicondylitis, patella, Achilles
Describe isokinetic exercise
- the velocity of the joint is predetermined & held constant by a rate limiting device known as an isokinetic dynamometer
Angular velocity for different speeds of isokinetic exercise
Isometric: 0 degrees per sec
Slow: 30-60 degree per sec
Medium: 60-180/240 degrees per sec
Fast: 120/240-360 degrees per sec
Characteristics of open chain exercises
- independent joint movement, no movement in adjacent joints
- movement of body segments distal to the joint moving
- typically non-weight bearing
- resistance applied to distal moving segment, external rotary loading
- external stabilization required