Which one of the following statements about proprioceptive neuromuscular facilitation (pnf) is most accurate? a. it is the most common and practical type of stretching. b. it can cause more muscle soreness than other types of stretching. c. it involves a very small amount of resistance. d. it involves bouncing, repetitive movements.
"It can cause more muscle soreness than other types of stretching
A). It is the most common and practical type of stretching
PNF is Proprioceptive Neuromuscular Facilitation whose main aim is to increase range of performance and motion. It is most common type of exercising and stretching technique which is beneficial for muscle elasticity and on both active and passive motions of muscles.
Proprioceptive Neuromuscular Facilitation (PNF) is one of the most advanced form of muscle elasticity and flexibilty training, which includes the stretching of muscles and contracting of the muscle being targeted.
Hence it is the most common and practical type of stretching.
c. lactic acid fermentation
If we did alcoholic fermentation, working out would make us feel drunk, not sore. This is only done by yeasts (a type of fungus) and bacteria. Glycolysis is simply an anaerobic process that occurs with fermentation and also regular aerobic respiration. It doesn't cause any soreness on its own. The Krebs cycle is the second major part to cellular respiration; it produces 6 NADH's, 2 FADH2's, 4 CO2's and 2 ATP; it's not involved in creating any soreness, as cell respiration does not create soreness. That leaves lactic acid fermentation, which we, bacteria, yeasts, and other organisms do. This is what we do when we run out of ample oxygen while doing some strenuous activity. Glycolysis is done with it. Glycolysis, however, relies on NAD+ to create ATP we need to maintain the same level of activity, lactic acid is produced as it accepts the 2 electrons and [H+] NAD+ should accept.
Cellular respiration or internal respiration is the set of biochemical reactions by which certain organic compounds are completely degraded, by oxidation, to become inorganic substances, a process that provides usable energy for the cell (mainly in the form of adenosine triphosphate).
Muscle contraction is the physiological process in which the muscles develop tension and shorten or stretch (or may remain the same length) due to a previous extension stimulus. These contractions produce the motor force of almost all the upper muscles, for example, to move the contents of the cavity to which they line (smooth muscle) or move the organism through the medium or to move other objects (striated muscle).
The contractions are controlled by the central nervous system. While the brain controls voluntary contractions, the spinal cord controls involuntary reflexes.
Muscle soreness due to overload, called cramp, is a sustained and involuntary contraction of a muscle or group of muscles, which causes mild or intense pain, and can cause these muscles to harden or bulge. It can occur due to insufficient oxygenation of the muscles or the loss of fluids and mineral salts as a result of prolonged effort, sudden movements or cold. In most cases it is harmless and disappears after a few minutes (it is also known as muscle "pull"). Poisoning or certain diseases can also cause cramping, particularly in the stomach. Normally they can be relieved or eliminated by performing stretching exercises on the affected area, resting and, in more persistent cases, taking some type of muscle or anti-inflammatory relaxant.
In the case of people who perform a lot of exercise or a continuous exercise, it is advisable to drink isotonic drinks, which contain the ions that the muscles need to reduce fatigue or recover earlier. The spasms produced in a fibromyalgia box occur in the same way, but their recovery is slower and almost always causes contracture in the spasmed area.
At the first sign of muscle pain, it is recommended to suspend the activity and try to stretch and massage the affected muscle. Initially, the heat helps to relax the muscle, although the application of ice can be useful after the initial spasm and when the pain has been reduced. If muscle pain persists, nonsteroidal anti-inflammatory drugs may be used and, in more severe cases, the doctor may prescribe antispasmodic or muscle relaxant medications. After the initial treatment, the cause of the spasm should be determined to prevent recurrence and if there is compromise of an irritated nerve, it may be necessary to resort to physiotherapy or even surgery.
Explain the relationship between cellular respiration and muscle contractions. ? Cellular respiration plays a key role in returning the muscles to normal after exercise, converting the excess pyruvate into ATP and regenerating the stores of ATP, phosphocreatine, and glycogen in the muscle that are required for more rapid contractions.
Explain the two reasons that muscles can get sore with eccentric exercise.? Initial event. It is generally agreed that there are two prominent signs of damage in a muscle immediately after it has been subjected to a series of eccentric contractions. There are the presence of disrupted sarcomeres in myofibrils and damage to the excitation-contraction (E-C) coupling system.
How is cellular respiration, both anaerobic and aerobic, instrumental in muscle contractions? Anaerobic and aerobic are both instrumental in muscle contractions because they control physiological activities. Anaerobic is more fast paced exercising or weight lifting while Aerobic is more of a stamina type deal. It is more for longer duration of an exercise.
What is eccentric exercise? An eccentric contraction is the motion of an active muscle while it is lengthening under load. Eccentric training is repetitively doing eccentric muscle contractions.
What are two causes of muscle soreness after eccentric exercise? According to this "muscle damage" theory of DOMS, these ruptures are microscopic lesions at the Z-line of the muscle sarcomere. The soreness has been attributed to the increased tension force and muscle lengthening from eccentric exercise.
What are some treatments for muscle soreness?
* gentle stretching
* muscle massage
* ice to help reduce inflammation
* heat to help increase blood flow to you muscles
* over-the-counter pain medicine, such as a nonsteroidal anti-inflammatory drug (NSAID) like ibuprofen
It is the most common and practical type of stretching.
Proprioceptive neuromuscular facilitation (PNF) is a very common and practical method of stretching that promotes and accelerates the response of neuromuscular mechanisms through the stimulation of receptors in the nervous system. It is based on the use of movements and postures for therapeutic purposes and seeks to understand movement and normal posture to perform learning or relearning when these movements or posture are altered.
Latic Acid and Delayed Onset !!
question #4: Heat, Anti-Inflammatory drug, etc.
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c. will be your answer sorry if im wrong tho