Stiff muscles only result from overworking them

Answers

Answer 1

Answer: Stiff muscles can come from overworking them, but also from having lactic acid accumulation, low hydration or glycogen stores and from 'DOMS' delayed onset muscle soreness which can take a day or two to appear after a suddenly (unusual) strenuous workout.

Answer 2

Answer:

Final answer:

Muscle stiffness is multifaceted and can result from factors such as overworked muscles, cellular damage after intense exercise, improper alignment of joints, lack of warm-up before exercises, and myosin heads not detaching from action-binding sites. Muscles gain mass as the damage is repaired, a process called hypertrophy. This contrasts with the atrophy process where sarcomeres and myofibrils disappear but the number of muscle fibers remains.

Explanation:

Stiff muscles do not only result from overworking them but can be due to various factors. Improper resistance training, for instance, can lead to overused muscles, tendons, or bones resulting from too heavy loads or insufficient recovery time between workouts. Other causes include cellular damage to muscle fibers after intense exercise and joints not properly aligned. Besides, the condition of muscles being rarely completely relaxed or flaccid also contributes to muscle stiffness.

However, it's worth noting that muscles gain mass as the muscle damage is repaired, and additional structural proteins are added to replace the damaged ones. This is referred to as hypertrophy. The opposite process - atrophy, results in the disappearance of sarcomeres and myofibrils but not the number of muscle fibers, which can be observed when a limb casts are removed or in diseases like polio.

Everyday activities, such as exercise and stretching, matter too. Warm-up exercises increase blood flow to the muscles while stretching helps pull on the muscle fibers. Absence of a proper warm-up can result in damage to muscle fibers or a pulled tendon. Lastly, myosin heads not detaching from actin-binding sites results in muscle stiffness, causing conditions like 'writer's cramp' or rigor mortis in a recently deceased person.

Learn more about Muscle Stiffness here:

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If someone wanted to manage his or her weight in a healthy way, he or she should

Answers

Cut out fatty, or oily foods. More physical activities. Stress managent also helps, people who are more stress tend to gain/lose more weight which can becone unhealthy.

The EMGs recorded in this week's lab will be from sustained voluntary muscle contractions rather than from the reflexes we have observed in previous labs. In recordings of voluntary muscle contraction, EMG data often appear as bursts of spike-like signals (hundreds or thousands of peaks clustered together) versus the smooth EMG curves seen in reflexes. What is a reason for this?

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Answer:

B IS ANSWRE

Explanation:

Which nutrient is the most important one for our body and comprises one third of our bones

Answers

The answer to your question is Calcium

Calcium!
because it keeps our bones healthy and strong.
People usually get calcium from dairy products. For example, milk, cheese, and butter. If you eat a good portion of dairy products then your not so prone to broken bones and you will have a healthy bone:)
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Which is an example of a barrier to exercise? A person is able to perform daily exercise. A person has an injury and cannot work out. A person receives support from family and friends. A person completes an exercise routine three days a week.