Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Motor Unit Stimulation01:20

Motor Unit Stimulation

3.5K
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.
The latent period of contraction marks the onset of excitation-contraction coupling, when the action potential propagates across the sarcolemma, preparing the muscle fibers for contraction. As the fibers enter the contraction phase, the...
3.5K
Muscle Stimulation Frequency01:22

Muscle Stimulation Frequency

4.3K
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
At low firing rates, motor neurons induce individual twitch contractions in muscle fibers. These twitches...
4.3K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Oxygen uptake on-kinetics during horizontal and uphill treadmill running in moderate- and severe-intensity domains.

European journal of applied physiology·2026
Same author

The effects of caffeinated chewing gum on sprint swimming performance and upper-body strength: a randomized crossover study.

BMC nutrition·2026
Same author

Metabolic, V̇O<sub>2</sub> kinetics, and muscle oxygenation responses at and above maximal lactate steady state in trained male rowers.

Physiological reports·2026
Same author

Prediction of on-water performance in outrigger canoeing using laboratory tests: the influence of sex and anthropometric characteristics.

Frontiers in sports and active living·2026
Same author

Thresholds Derived From Muscle NIRS Signal, Heart Rate Variability, and Ventilatory Parameters During an Incremental Cycling Test: An Agreement Analysis.

Research quarterly for exercise and sport·2026
Same author

Comparison of NIRS-derived [HHb] breakpoints and concordance with lactate thresholds during speed- and slope-based incremental running tests.

Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme·2026

Related Experiment Video

Updated: Jan 12, 2026

Construction of Constant-Load (Isotonic) and Constant-Velocity (Isokinetic) Torque-Velocity-Power Profiles In vivo for the Rat Plantar Flexors
07:44

Construction of Constant-Load (Isotonic) and Constant-Velocity (Isokinetic) Torque-Velocity-Power Profiles In vivo for the Rat Plantar Flexors

Published on: October 3, 2025

468

Neuromuscular Performance Impairment: Exploring the Power-Force-Velocity Recovery Profiles in Local and Nonlocal

Ângelo Meira1, Artur Ferreira Tramontin1, Guilherme Ribeiro1

  • 1Department of Human Performance Research Group, Center for Health and Sport Sciences, Santa Catarina State University, Florianópolis, Brazil.

Journal of Strength and Conditioning Research
|October 31, 2025
PubMed
Summary

Repetitive lengthening protocols impair neuromuscular performance in both local and nonlocal muscles, affecting force, velocity, and power output. Recovery requires monitoring both directly impacted and distant muscle groups.

Keywords:
back squatbench pressforce–velocity profilesmuscle fatigueresistance exercise

More Related Videos

Muscle Velocity Recovery Cycles to Examine Muscle Membrane Properties
08:27

Muscle Velocity Recovery Cycles to Examine Muscle Membrane Properties

Published on: February 19, 2020

14.7K
The Muscle Cuff Regenerative Peripheral Nerve Interface for the Amplification of Intact Peripheral Nerve Signals
07:30

The Muscle Cuff Regenerative Peripheral Nerve Interface for the Amplification of Intact Peripheral Nerve Signals

Published on: January 13, 2022

2.4K

Related Experiment Videos

Last Updated: Jan 12, 2026

Construction of Constant-Load (Isotonic) and Constant-Velocity (Isokinetic) Torque-Velocity-Power Profiles In vivo for the Rat Plantar Flexors
07:44

Construction of Constant-Load (Isotonic) and Constant-Velocity (Isokinetic) Torque-Velocity-Power Profiles In vivo for the Rat Plantar Flexors

Published on: October 3, 2025

468
Muscle Velocity Recovery Cycles to Examine Muscle Membrane Properties
08:27

Muscle Velocity Recovery Cycles to Examine Muscle Membrane Properties

Published on: February 19, 2020

14.7K
The Muscle Cuff Regenerative Peripheral Nerve Interface for the Amplification of Intact Peripheral Nerve Signals
07:30

The Muscle Cuff Regenerative Peripheral Nerve Interface for the Amplification of Intact Peripheral Nerve Signals

Published on: January 13, 2022

2.4K

Area of Science:

  • Sports Science
  • Exercise Physiology
  • Neuromuscular Function

Background:

  • Neuromuscular impairment following exercise can affect muscle function.
  • Understanding the recovery kinetics of both local and nonlocal muscles is crucial for training and rehabilitation.

Purpose of the Study:

  • To investigate the time course of neuromuscular performance changes in local (lower limb) and nonlocal (upper limb) muscles after a repetitive lengthening protocol (RLP).
  • To analyze the recovery of the force-velocity-power profile in response to induced neuromuscular disruption.

Main Methods:

  • Sixteen physically active men underwent a repetitive lengthening protocol (RLP) using drop jumps.
  • Neuromuscular performance was assessed using back squat (local) and bench press (nonlocal) exercises, measuring maximal theoretical force (F 0), velocity (V 0), and power output (Pmax).
  • Measurements were taken at baseline and 24, 48, and 72 hours post-RLP, alongside delayed onset muscle soreness.

Main Results:

  • Significant reductions in F 0 and Pmax were observed in both back squat and bench press, with greater impairments in the back squat.
  • Velocity (V 0) decreased in the back squat but remained unchanged in the bench press, indicating task-specific effects.
  • Force deficits persisted across all time points, while power output showed progressive reductions, peaking at 72 hours.

Conclusions:

  • Repetitive lengthening protocols induce neuromuscular impairments that extend beyond the directly exercised muscles.
  • Recovery of force, velocity, and power profiles differs between local and nonlocal muscles.
  • Comprehensive monitoring of both local and nonlocal muscle recovery is essential for effective training and rehabilitation program design.