Question

The strongest muscle contractions are normally achieved by ________.

a) increasing the stimulation up to the maximal stimulus
b) increasing stimulus above the threshold
c) increasing stimulus above the treppe stimulus
d) recruiting small and medium muscle fibers

Answer 1

Answer:

a) increasing the stimulation up to the maximal stimulus

Explanation:

The strength of a muscle contraction is determined by:

1. Level of motor unit recruitment: the size and number of motor neurons being stimulated in a particular muscle.
2. Muscle cross-sectional area: The greater the cross-sectional area of the muscle, the more muscle fibres that can be activated simultaneously.
3. Muscle stretch: A muscle fibre can shorten to about 50 % to 60 % of its length, but it will be less efficient if it is already short.That’s why many athletes use a brief dynamic stretch sequence as a warm-up prior to their strength work.

Number 1 is the only necessary factor for your answer.