The concept or phenomenon of "Treppe" occurs when a muscle contracts more forcefully after it has contracted a few times than when it first contracts. This is due to the fact that active muscles require decreasing degrees of succeeding stimuli to elicit maximal contractions.

What is the reason for treppe?

This tension increase is called treppe, a condition where muscle contractions become more efficient. It's also known as the “staircase effect” (Figure 5). It is believed that treppe results from a higher concentration of Ca⁺⁺ in the sarcoplasm resulting from the steady stream of signals from the motor neuron.

What is treppe effect?

The Bowditch effect is also known as the Treppe phenomenon, staircase phenomenon, or frequency-dependent activation. It refers to the idea that an increase in heart rate increases the force of contraction generated by the myocardial cells with each heartbeat despite accounting for all other influences.