Principles of Functional Exercise
Muscle Contraction Figure 1. Myofibrils The myofibrils are the contractile components that allow for strength and the performanc ...
Figure 2 Mitochondria The mitochondria are located all along the myofibrils. They provide the energy a cell needs to move, divid ...
Muscle Fiber A muscle fiber (also technically known as a myocyte) is a single cell of a muscle. Muscle fibers contain many myofi ...
Figure 3. The seven types of skeletal fibres Most skeletal muscles are either fusiform or pennate fibers. Muscle Fiber Types As ...
Red Fast Twitch Fibers - Type II a The red, fast twitch muscle fibers have a greater number of capillaries, and can, therefore, ...
How Muscles Contract Nerves connect the spinal column to the muscle. The nerve and muscles meet at the neuromuscular junction. A ...
Isokinetic Muscle contraction at a constant velocity. For example, pushing an object that cannot be moved. Agonists Muscle pe ...
Motor units A motor unit is a single motor neuron plus all the muscle fibers to which it connects. Some motor neurons only conne ...
Depleting Energy Recruitment As a result of depleting energy, another type of motor unit recruitment occurs. For example, during ...
desired affect being the enhancement of speed and power through explosive muscle contraction lasting only a split second under e ...
Dispelling Common Myths All the tissue fibers within a motor unit will contract together because the entire motor unit is stimul ...
CHAPTER 7 Myofibrils are the contractile components that allow for strength and the performance of work. A. True B. False Actin ...
Fast twitch motor units are responsible for A. Sustaining a load over a prolonged period B. Speed and strength C. Producing ene ...
CHAPTER 8 The Energy Systems ...
The Energy Systems Bioenergetics, or the “energy systems,” refers to the metabolic pathways from which energy is made available ...
There are three major sources of high energy phosphate (ATP) that take part in the conservation, capture, and expenditure of fre ...
intensity, creatine kinase activity remains elevated, and leads us into the next system of anaerobic glycolysis. As exercise int ...
Again, protein will only be used at the level of complete muscular starvation and depletion. At the end stages of glycolysis, th ...
emphasis is on the dominating system. No activity, whether it’s a gentle stroll or a high-intensity sprint, exclusively uses one ...
Estoteric exercises (strong men competitions) Power lifting (heavy bench, heavy squat, and heavy deadlift) Olympic lifting (sna ...
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