Muscle

Skeletal Muscle: Skeletal muscle makes up approximately 40 percent of a humans total body weight, and contains 50-75 percent of all body proteins, accounting for 30-50 percent of whole body protein turnover (Frontera and Ochala 2015). It contributes significantly to multiple bodily functions both mechanically and metabolically. In terms of our study its main function is to convert chemical energy into mechanical energy allowing individuals to generate force and power, and produce repetitive…

This muscle group is used in almost everything a person does. It is a huge and important part of all of the functions of a human. It can be strengthened in many different ways depending on which part, if any, you would like to focus on. The Abdominal muscles do a lot for the body to keep it functioning. They assist in breathing and protecting the important organs within the body. They assist in bodily functions such as urinating, childbirth, singing, vomiting and much more. They also assist in…

pig and its muscle structure, researchers and individuals are able to gain a better understanding of what human muscles look like, where they are located, and how they function. The muscles that were labeled in the dissection are important factors in the movement of the individual. The muscles work together though antagonism. Antagonism works when one muscle, such as the extensor carpi radialis contracts, and the flexor carpi radialis relaxes, allowing the hand to extend. These muscles are…

Muscle contraction is made possible when an action potential is propagated from a motor neuron to a muscle fiber. This occurs at the neuromuscular junction, where the neuron innervates the muscle fiber. One nerve can innervate thousands of muscle fibers, allowing for an entire muscle to contract. At each neuromuscular junction, muscle tissue (an excitable tissue) is able to receive an electrical signal from the motor neuron and propagate it further. As the electrical signal reaches the terminal…

together to strengthen muscle fibres and protect them from injury as muscles contract and relax. Dystrophin is produced by the DMD gene and mutations cause Duchenne and Becker muscular dystrophies, which lead to reduced amounts of dystrophin in skeletal muscle cells. This reduced amount of dystrophin causes muscles to weaken and damage over time, causing the build up of fat rather than muscle. This pseudohypertrophy causes the appearance of enlarged muscle, namely in the calf muscles, in those…

in hand. For older adults, the current recommended amount of physical activity, according to the Centers for Disease Control and Prevention (2014), is 2 hours and 30 minutes of moderate-intensity aerobic activity per week and at least two days of muscle-strengthening activities each week. Research shows that exercise and other types of physical activity can play a role in reducing individuals’ risk of developing memory loss diseases or other age-related cognitive deficits (Gomez-Pinille &…

Hello class, I hope you all had a great Thanksgiving weekend. This week, studying the topic of the benefits of obtaining muscle for overall health, I just wanted to hit on a few topics that skirt just outside the course scope. Besides the four reasons given to us in the book, promoting the benefits of gaining muscle, I personally believe it goes a little deeper than just those four. The big one that first came mind is just that, mind. For many individuals, weight training is a source of…

Muscle Pain, Adult Muscle pain (myalgia) may be caused by many things, including: • Overuse or muscle strain, especially if you are not in shape. This is the most common cause of muscle pain. • Injury. • Bruises. • Viruses, such as the flu. • Infectious diseases. • A chronic condition that causes muscle tenderness, fatigue, and headache (fibromyalgia). • A condition, such as lupus, in which the body’s disease-fighting system attacks other organs in the body (autoimmune disease).…

Stretching your muscles before a workout is always beneficial, but especially so when getting ready to perform back muscles exercises. Stretching loosens up the muscles in your back enabling you to perform those exercises for back muscles more intensely without risking possible injury. Building up the back muscles can be very difficult. It will consume a great deal of your energy. Targeting the muscles is also difficult because they are out of view. There are some excellent guidelines to be…

As a rule of thumb, slim guys find it hard to build muscle mass, but look around our local gym and you see loads of once skinny men who have used exercise to transform their body. Building a body takes focus, time and consistency and your biceps are definitely not going to ripple after a week’s weightlifting. Most beginner bodybuilders say they trained for six months before seeing results. The list of exercise routines is endless, but after listening to intermediates it was clear many reached…