PATHFIT 2 Flashcards
It is a muscle contraction without motion
Isometric contraction
used to stabilize a joint, such as when a weight is held at waist level neither raising nor lowering it.
Isometric contraction
Also referred to as resistance exercise or strength training
Isometric contraction
Benefits of Isometric contraction
- activating many muscle fibers at once.
- require less practice
- suitable for people with an injury or medical condition that restricts movement.
- effective way to lower blood pressure.
- improve muscle stability and the ability to hold weight over longer periods.
- help with pain relief for lower back pain, knee osteoarthritis, and neck pain.
Examples of Isometric contraction
Plank
Wall sit
Glute bridge
Dead hang
Isometric squat
classically defined as the movement of a load at constant resistance through an arc of motion.
Isotonic contraction
occur when the muscle changes length, producing limb motion.
Isotonic contraction
also referred to as aerobic, dynamic, or endurance exercise
Isotonic exercise
involves high-repetition movements against low resistance and includes such activities as walking, running, swimming, and cycling
Isotonic exercise
produces limb movement without a change in muscle tension
Isotonic muscle contraction
produces muscle tension without a change in limb movement.
Isometric muscle contraction
muscle lengthening as the muscle produces tension and the insertion moves away from the origin.
Eccentric contractions
require less energy
Eccentric contractions
thought to be responsible for some aspect of postexercise muscle soreness.
Eccentric contractions
is muscle shortening as the muscle produces tension while the insertion moves toward the origin.
Concentric contractions
Movement occurs in the same direction as the tension and joint motion because the contractile force is greater than the resistive force.
Concentric contractions
Require more energy
Concentric contractions
Benefits of isotonic contractions
Stronger muscles
Increased muscle mass
Stronger bones
Better cardiovascular health
Functional strength and ability
Weight loss
Risk of isotonic contractions exercise
Muscle strain
Joint injury
Cardiac events
Dehydration
Overtraining
Examples of isotonic contractions
Push ups
Pull ups
Alternator lunges
Squat thrust
Military press
Bicep curls
Tone of muscle
Isotonic contractions
Used in rehab, meter or length
Isometric contractions
commonly used in strength and conditioning and bodybuilding.
Time-under-tension or TUT
A typical set of 10 reps for an average lifter will take anywhere from 15-25 seconds depending on lifting speed.
Time-Under-Tension or TUT
refers to the amount of time a muscle is held under tension or strain during an exercise set.
Time-Under-Tension or TUT