Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Hydraulic Jump: Problem Solving

Hydraulic Jump: Problem Solving

To analyze a hydraulic jump in a rectangular channel with a flow speed of 6 meters per second, follow these steps:Calculate Effective Upstream Velocity:When the downstream gate closes, a hydraulic jump forms, traveling upstream at 2 meters per second. This wave speed combines with the initial channel flow velocity, creating an effective upstream velocity.Identify Flow Velocities Before and After the Hydraulic Jump:Upstream of the hydraulic jump, the effective flow velocity includes both the...

Upward Impending Motion

Upward Impending Motion

A square-threaded screw jack is a mechanical device widely used for lifting heavy loads or applying considerable force. Its operation is based on converting the force applied at its handle into a torsional moment, causing the upward impending motion of the screw. This movement is accomplished by overcoming the static friction between the threads of the screw and the jack.
To better comprehend how a screw jack functions, consider the completely unraveled thread as a block in contact with the...

Muscle Coordination and Action

Muscle Coordination and Action

Muscle coordination is a complex and finely tuned process essential for smooth and purposeful movements like flexion, extension, adduction, abduction, and rotation. The human body orchestrates the actions of various muscles working in concert, each with a specific role. Four functional types describe how muscles work together: agonist, antagonist, synergist, and fixator.
Agonists
Agonist muscles, often called prime movers, are the primary muscles responsible for producing a specific movement....

Maximum Deflection

Maximum Deflection

When analyzing beams under unsymmetrical loads, such as a train moving on a bridge, it is crucial to accurately determine the points of maximum stress and deflection. The process involves identifying the maximum deflection of the beam, which may not always occur at its midpoint due to the uneven distribution of the load.
The maximum deflection occurs at a specific point, known as point O, where the tangent to the deflection curve is horizontal. To find point O, the slope of the tangent at any...

Mechanical Efficiency of Real Machines

Mechanical Efficiency of Real Machines

The mechanical efficiency of a machine is a fundamental concept that describes how effectively a machine can convert input work into output work. According to this concept, the efficiency of a machine is equal to the ratio of the output work to the input work. An ideal machine, meaning a machine that has no energy losses, has an efficiency of one. This implies that the input work and the output work are equal.
However, in reality, no machine can be truly ideal, and all of them experience some...

Impact: Problem Solving

Impact: Problem Solving

In an experiment conducted during a Mars mission, a rover propels a projectile with an initial velocity, and the projectile rebounds after colliding with the Martian surface. To ascertain the maximum height attained by the projectile after this collision, the known restitution coefficient and acceleration due to gravity are employed.
By designating the launch point as the origin and utilizing kinematic equations, the vertical component of the projectile's velocity at the point of impact is...

You might also read

Related Articles

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

Sort by

Same author

Entropy-dependent human motor modulation consistent with morphological computation in a single subject.

Frontiers in robotics and AI·2026

Same author

Factors Contributing to the Success of Counterattacks Examined Through Reaction Time.

Perceptual and motor skills·2025

Same author

Importance of Motor Control in "Static Situations" Where the Situation Does not Seem to Change.

Perceptual and motor skills·2025

Same author

Human Information Processing of the Speed of Various Movements Estimated Based on Trajectory Change.

Entropy (Basel, Switzerland)·2023

Same author

Estimating Information Processing of Human Fast Continuous Tapping from Trajectories.

Entropy (Basel, Switzerland)·2022

Same author

Fitts' law when errors are not allowed: Quantification of reciprocating trajectories and estimating information processing.

Acta psychologica·2021

Search research articles

Related Experiment Video

Updated: Jun 27, 2025

Experimental Methods to Study Human Postural Control

Experimental Methods to Study Human Postural Control

Published on: September 11, 2019

Mechanism for High-Precision Control of Movement at Maximum Output in the Vertical Jump Task.

Hiroki Murakami¹, Norimasa Yamada¹

¹Graduate School of Health and Sport Sciences, Chukyo University, 101 Tokodachi, Kaizu-cho, Toyota 470-0393, Aichi, Japan.

Entropy (Basel, Switzerland)

|April 26, 2024

Summary

Human movement balances speed and accuracy. Adding landing control to vertical jumps improved accuracy by reducing speed, showing a feedforward control mechanism for precise landings.

Keywords:

maximum effort speed and accuracy trajectory whole-body movement

More Related Videos

Importance of Jumping Ability in Handball Throwing Speed and Accuracy

Importance of Jumping Ability in Handball Throwing Speed and Accuracy

Published on: April 4, 2025

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

Related Experiment Videos

Last Updated: Jun 27, 2025

Experimental Methods to Study Human Postural Control

Experimental Methods to Study Human Postural Control

Published on: September 11, 2019

Importance of Jumping Ability in Handball Throwing Speed and Accuracy

Importance of Jumping Ability in Handball Throwing Speed and Accuracy

Published on: April 4, 2025

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

Area of Science:

Biomechanics
Human Motor Control
Sports Science

Background:

Human movements inherently involve a speed-accuracy tradeoff.
Previous research on this tradeoff in whole-body sports movements yielded inconsistent findings.
Existing studies often focused narrowly on competition-specific actions.

Purpose of the Study:

To investigate the speed-accuracy tradeoff in a vertical jump task with added landing control.
To evaluate the fundamental essence of sports movements requiring both speed and accuracy.
To analyze the underlying mechanisms of this tradeoff in a controlled setting.

Main Methods:

Incorporated a vertical jump task with a landing position control condition.
Quantified movement accuracy using entropy based on landing and takeoff coordinates.
Analyzed 3D vector trajectories to understand the tradeoff mechanism.

Main Results:

Adding landing control to vertical jumps increased accuracy and decreased movement speed.
The 3D velocity vector showed reduced magnitude and a more vertical direction during controlled jumps.
Improved landing accuracy correlated with decreased trajectory entropy, suggesting feedforward control.

Conclusions:

The speed-accuracy tradeoff is evident even in maximal effort tasks like vertical jumps when accuracy is prioritized.
Landing position control in vertical jumps is achieved through feedforward mechanisms, adjusting the initial takeoff velocity vector.
This contrasts with feedback control observed in simpler movements like hand actions.