Exam 1 review Flashcards
Body mechanics
is the way we move our bodies. it includes body alignment, balance, coordination, and joint mobility.
-teaches patients how to move
-teaches us how to move
Body alignment
- posture.
- places spine in a neutral position.
- allows movements to occur with less fatigue.
- work at peak efficincy
- normal functioning of the nervous system
Balance
Your line of gravity must pass through your center of gravity
Center of gravity should be close to your base of support
How to balance
- Use a wide stance, with feet apart and one foot forward when standing for a long period of time.
- The broader the base of support, the lower the center of gravity, and the easier it is the maintain balance.
Coordination
3 components
Smooth movement requires coordination between the nervous system and the MSK.
* cerebral cortex : Initiation VOLUNTARY movement
* cerebellum: Coordinates movements; PROPRIOCEPTION, the awareness of posture, movement, and position sense
* basal ganglia: located deep in the cerebellum. Coordination of movement
Joint Mobility
ROM
AROM
PROM
ability to move within the environment.
Baseline activity
light intensity ADLS such as standing, walking slow, lifting objets that are lightweight.
Exercise
health enchancing physical activity
Isometric Exercises
muscle contraction without motion. They are usually performed against an immovable surface or object, for example, pressing the hand against a wall. The muscles of the arm contract, but the wall does not move. Each position is held for 6 to 8 seconds and repeated 5 to 10 times. Isometric training is effective for developing total strength of a muscle or group of muscles.
Benefits of isometric exercises
Often used for rehabilitation because the exact area of muscle weakness can be isolated and strengthening can be administered at the proper joint angle
Requires no special equipment
Little chance of injury
Can be used by patients who are confined to bed to maintain or regain muscle strength
Isotonic Exercise
movement of the joint
during the muscle contraction. A classic example of an isotonic exercise is weight training with free weights. As the weight is moved throughout the ROM, the muscle shortens and lengthens. Calisthenics, such as chin-ups, push-ups, and sit-ups, all of which use body weight as the resistance force, are also isotonic exercises.
Isokinetic exercise
performed with specialized apparatuses that provide variable resistance to movement. Isokinetic exercise combines the best features of both isometrics and weight training by providing resistance at a constant, preset speed while the muscle moves through the full ROM. Specialized machines available at health and fitness facilities and physical therapy departments are used for this form of exercise.
Aerobic exercise
acquires energy from metabolic pathways that use oxygen—the amount of oxygen taken into the body meets or exceeds the amount of oxygen required to perform the activity. Aerobic exercise uses large muscle groups, can be maintained continuously, and is rhythmic in nature. It increases the heart and respiratory rates, thereby providing exercise for the cardiovascular system while simultaneously exercising the skeletal muscles. Jogging, brisk walking, and cycling are common forms of aerobic exercise.
Anaerobic exercise
Anaerobic exercise occurs when the amount of oxygen taken into the body does not meet the amount of oxygen required to perform the activity. Therefore, the muscles must obtain energy from metabolic pathways that do not use oxygen. Rapid, intense exercises such as lifting heavy objects and sprinting are examples of anaerobic exercise.
People who shouldn’t exercise
SOB, dizzy, chest pain, joint pain, weight loss unexplained, fever w/ no infection, eye problems, blood clot, hernia, recent hip or joint surgery
Prolonged immobility MSK
- muscle wasting 10% of strength per week losing stability muscles in legs
- stiff joints
- Contractures (flexors pull the joints leading to joint ankyloses)
Cardio immobility
- Venous stasis
- less cardiac reserve
- edema
- risk for thrombosis - leads to compression so can’t clear out coag. factors. Blood clots. Virchows triad of stasis, activation of clotting, and vessel injury.
- Increased risk of DVT
- Orthostatic hypotension because baroreceptors become inactive