Which of the following accurately describes the concept of treppe?
a) The idea that muscle contractions become weaker with repeated stimula
b)
The progressive increase in muscle contraction force that occurs with
repeated stimulation at a constant frequency
c) The relationship between muscle length and contractile force
d) The alternation of muscle contraction and relaxation during exercise

Treppe is the progressive increase in muscle contraction force that occurs with repeated stimulation at a constant frequency. This phenomenon results in the muscle tension increasing in a graded manner that looks like a set of stairs, making muscle contractions more efficient. It is believed to be influenced by a higher concentration of Ca ions in the sarcoplasm due to continuous signaling from the motor neuron.

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