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Long-term Potentiation

Long-term Potentiation

Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
Hebbian LTP
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Long-term Potentiation

Long-term Potentiation

Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre- and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.

Exercise and Muscle Performance

Exercise and Muscle Performance

Exercise induces a range of adaptations in muscle tissue, depending on the type and duration of activity. Such physical training can be broadly categorized into two types: endurance exercises and resistance exercises.
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...

Muscle Stimulation Frequency

Muscle Stimulation Frequency

The contraction strength of muscles is regulated by motor neurons, which modulate the frequency of action potentials dispatched to the motor units based on the body's requirements. This process of varying the muscle stimulation frequency allows muscles to contract with a force that is precisely tailored to the needs of the moment, whether lifting a feather or a heavy box.
Wave summation
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Motor Unit Stimulation

Motor Unit Stimulation

When the neuron of a motor unit fires an action potential, it triggers a series of events, leading to a twitch contraction in the muscle fibers. The process of excitation-contraction coupling is crucial in relaying the action potential to the muscle fibers.
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Generation of Action Potential in Skeletal Muscles

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Every cell in the body maintains a membrane potential due to an uneven distribution of positive and negative charges across its plasma membrane. The membrane potential is measured in millivolts and quantifies the difference in charge across the membrane.
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Related Experiment Video

Updated: May 21, 2026

Non-invasive Assessments of Subjective and Objective Recovery Characteristics Following an Exhaustive Jump Protocol

Non-invasive Assessments of Subjective and Objective Recovery Characteristics Following an Exhaustive Jump Protocol

Published on: June 8, 2017

Potentiation of vertical jump performance during a snatch pull exercise session.

Loren Z F Chiu¹, George J Salem

¹Faculty of Physical Education and Recreation, University of Alberta, Edmonton, AB, Canada.

Journal of Applied Biomechanics

|June 15, 2012

Summary

Weightlifting exercise, specifically the snatch pull, enhances vertical jump performance in male athletes. This potentiation effect, observed during and after the exercise, is linked to increased work at the knee and ankle joints.

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Area of Science:

Sports Science
Biomechanics
Exercise Physiology

Background:

Potentiation, an increase in muscle force, is known to follow strength stimuli.
Previous research assessed potentiation's effects on whole-body performance only.
The acute effects of weightlifting on vertical jump joint kinetics remain under-explored.

Purpose of the Study:

To investigate the acute effects of snatch pull exercise on vertical jump performance and joint kinetics in male athletes.
To determine how joint-specific work contributes to potentiation during and after a strength exercise session.

Main Methods:

Male athletes performed vertical jumps before, during, and after snatch pull exercise.
Three-dimensional motion analysis and inverse dynamics were used to assess jumping.
Joint kinetics, including net joint work, were analyzed at the knee and ankle.

Main Results:

Vertical jump height significantly increased at the midpoint and end of the snatch pull exercise.
At the midpoint, increased knee extensor net joint work correlated with enhanced jump height.
At the end of the session, increased ankle plantar flexor net joint work correlated with enhanced jump height.

Conclusions:

Snatch pull exercise acutely enhances vertical jump performance in male athletes.
Potentiation's contribution to performance varies across joints during multijoint exercise.
Knee joint work is critical mid-exercise, while ankle joint work is crucial post-exercise for potentiation.