Muscles and How they Work
There are three types of muscle -
Skeletal muscle - covers our bones. These muscles support our skeletal frame, and aid movement. We have control over these muscles. Men have an average of around 40-50% of the body mass as Skeletal Muscle, and females have around 30-40%.
Smooth muscle - this is the muscle in the bladder, intestines and blood vessels. We do not have conscious control over these muscles.
Cardiac muscle - this is found only in the heart. We have no control over this muscle.
Types of Exercise
Exercise improves fitness, muscle, bone strength, and joint function. Exercise stimulates the muscles.
Aerobic exercise involves long, low levels of exertion so the muscles are not working at their maximum contraction strength. Aerobic exercises build up stamina for marathons.
Anaerobic exercise is explosive, high intensity contractions - the type used in a sprint or weight lifting.
Muscles are bundles of tiny fibres wrapped in a sheath of tissue to give strength. Each individual muscle is limited by the number of fibres we inherit via our genes. We cannot make more fibres through exercise or diet. For this reason, not all bodybuilders will go on to win a Mr Universe competition. The genes have a major part to play. The good news is, we can increase the strength and size of the muscles we have.
An increase in strength and size is the result of resistance training. This engages more and more of the available fibres, therefore the muscles will grow and get stronger. Training with weights causes micro-trauma - the muscle fibres tear (microscopic tears). This is felt as stiffness, or sore muscles, for a day or two after training. It is the repair to these tears that results in muscle growth.
That is what is so amazing - muscles grow when you are resting and not when you are training. You fill them with blood when you exercise and the tears occur. You then rest and the repairs take place, and the growth happens, if you have feeding them with the correct nutrients. Occasionally, It also helps to do different types of training to shock the muscles into growth.
Today is my chest and arms training and, in order to build and train a massive Chest, I am pushing the weights as heavy as I can. I keep safety in mind as I train by myself.
I am building my pecs doing Straight Bar Bench Presses and ending with a superset of flys. (See the table).
Triceps are being trained with tricep pushdowns and a superset of kickbacks. (See the table)
Biceps are being trained with Z Bar curls and a superset of hammer curls using dumbbells (See the table)
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