Related Experiment Video
Updated: Mar 21, 2026
10:08
Effects of a Novel Neuromuscular Training Intervention on Jump, Sprint, and Change of Direction in Adult Female Soccer Players
Published on: June 10, 2025
1.6K
Optimal compliant-surface jumping: a multi-segment model of springboard standing jumps
Kuangyou B Cheng1, Mont Hubbard
1Sports Biomechanics Laboratory, Department of Mechanical and Aeronautical Engineering, University of California, Davis, CA 95616, USA.
Journal of Biomechanics
|July 19, 2005
Summary
This study models optimal springboard jumping, finding that joint activation decreases near takeoff on compliant surfaces, unlike rigid surfaces. Taller jumpers benefit from higher fulcrum settings for increased jump height.
Area of Science:
- Biomechanics
- Human Movement Analysis
- Sports Science
Background:
- Springboard jumping involves complex interactions between the jumper and the board.
- Understanding optimal strategies for compliant surfaces is crucial for performance enhancement.
Purpose of the Study:
- To investigate optimal compliant-surface jumping strategies using a multi-segment human model.
- To simulate springboard standing jumps and maximize jump height through joint torque activation patterns.
Main Methods:
- A four-segment human model (feet, shanks, thighs, trunk-head-arms) was developed.
- A rotational spring model represented the springboard, with properties varying by fulcrum setting.
- Simulations optimized joint torque activation patterns during board contact, subject to constraints.
Main Results:
- The model accurately predicted jumper vertical velocity and jump height.
- Joint activation patterns decreased near takeoff on compliant surfaces, differing from rigid-surface jumping.
- Model predictions aligned with experimental fulcrum-height relationships.
Conclusions:
- Optimal springboard jumping strategies on compliant surfaces involve a decrease in joint activation near takeoff.
- Fulcrum settings significantly impact jump performance, with higher settings favoring taller/heavier individuals.
- Model predictions suggest potential for performance improvement with practice at varied fulcrum settings.
More Related Videos
Related Concept Videos
01:16Hydraulic Jump: Problem Solving
687
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...
687
01:29Hydraulic Jump
818
A hydraulic jump is a sudden rise in fluid depth in open channels, occurring when high-velocity (supercritical) flow transitions to low-velocity (subcritical) flow. This phenomenon requires an upstream Froude number greater than 1, as flows with Fr1<1 remain subcritical, making a hydraulic jump impossible due to the need for negative head loss, which violates thermodynamic principles.The characteristics of a hydraulic jump depend on the upstream Froude number and are classified as...
818
01:11Buoyancy and Stability for Submerged and Floating Bodies
4.4K
In fluid mechanics, buoyancy and stability are key concepts for understanding the behavior of submerged and floating bodies. When a stationary body is fully or partially submerged in a fluid, the fluid exerts a force on the body known as the buoyant force. This force acts vertically upward through a point called the center of buoyancy, which is the center of the displaced fluid volume. According to Archimedes' principle, the magnitude of the buoyant force is equal to the weight of the fluid...
4.4K
01:30Three-Dimensional Force System:Problem Solving
1.5K
A three-dimensional force system refers to a scenario in which three forces act simultaneously in three different directions. This type of problem is commonly encountered in physics and engineering, where it is necessary to calculate the resultant force on the system, which can then be used to predict or analyze the behavior of the object or structure under consideration.
To solve a three-dimensional force system, first resolve each force into its respective scalar components. Do this using...
To solve a three-dimensional force system, first resolve each force into its respective scalar components. Do this using...
1.5K
01:17Frequency of Spring-Mass System
8.2K
One interesting characteristic of the simple harmonic motion (SHM) of an object attached to a spring is that the angular frequency, and the period and frequency of the motion, depend only on the mass and the force constant of the spring, and not on other factors such as the amplitude of the motion or initial conditions. We can use the equations of motion and Newton's second law to find the angular frequency, frequency, and period.
Consider a block on a spring on a frictionless surface. There...
Consider a block on a spring on a frictionless surface. There...
8.2K
01:29Two-Dimensional Force System: Problem Solving
1.4K
Solving problems related to two-dimensional force systems is an essential aspect of mechanics and engineering. By applying the principles of vector analysis and force equilibrium, one can determine the effect of multiple forces acting on an object in a two-dimensional space.
The first step to solving a two-dimensional force system problem is to draw a free-body diagram of the object under consideration. This diagram helps identify all the external forces acting on the object, including their...
The first step to solving a two-dimensional force system problem is to draw a free-body diagram of the object under consideration. This diagram helps identify all the external forces acting on the object, including their...
1.4K