NSCA CPT H5

The smaller the neuron size of slow twitch motor units results in a lower threshold for activation, they are recruited at low force levels
THUS it's dependent on the force production requirements of a task

Omdraaien

CP becomes depleted during RT and that leads to decreased power production (because CP is important for phosphorylation of ADP to ATP)

Omdraaien

Glycogen breakdown is an important factor in the supply of energy, 80% of ATP production during RT comes from glycolysis so glycogen levels decrease in respons to RT

Omdraaien

1. Protein and peptide hormones (growth hormone and insulin)
2. Steroid hormones (derived from cholesterol; testosteron and estrogen)

Omdraaien

Testosterone, growth hormone and insulin
Cortisol

Omdraaien

increases fat and carbohydrate breakdown so more ATP will be available for muscle contraction and it facilitates motor unit recruitment
Exercise results in increases of epinephrine (sensitivity receptors for the hormone)

Omdraaien

ATP no change or slight decrease, CP decreases, glycogen decreases

Omdraaien

Hypertrophy. Changes in motor unit recruitment and firing rate, activate high threshold motor units leading to an increase in force production capability and increase in motor unit firing rates
(SHIFT FROM TYPE 2x TO TYPE 2a)
+ increase in protein synthesis/decrease in protein degredation, resulting in greater number myosin filaments (increase of myofibrils is result of splitting existing myofibrils into seperate myofibrils)

Omdraaien