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

Efficiency of The Carnot Cycle01:16

Efficiency of The Carnot Cycle

3.5K
The hypothetical Carnot cycle consists of an ideal gas subjected to two isothermal and two adiabatic processes. Since the internal energy of an ideal gas depends only on its temperature, which is the same before and after the completion of the Carnot cycle, there is no change in its internal energy. Hence, using the first law of thermodynamics, the total heat exchanged by the ideal gas equals the total work done. Thus, we can quantify the efficiency of the Carnot cycle via the heat exchanged...
3.5K
Mechanical Efficiency of Real Machines01:14

Mechanical Efficiency of Real Machines

1.2K
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...
1.2K
Energy to Drive Translocation01:37

Energy to Drive Translocation

2.6K
Mitochondrial protein import is powered by two distinct energy sources: ATP hydrolysis and electrochemical potential across the inner membrane. Newly synthesized precursors are bound by cytosolic chaperones of the Hsp70 family, which guide them to the import receptors on the mitochondrial surface. Utilizing the energy of ATP hydrolysis, Hsp70 chaperones transfer these precursors to the TOM receptors on the mitochondrial outer membrane.
Generally, polypeptides are unfolded by two distinct...
2.6K
Power Expended by a Constant Force00:57

Power Expended by a Constant Force

8.7K
The relationship between work done and the time taken to do it can be explained using the concept of power. For example, several sprinters in a race may have the same velocity when they reach the finish line, therefore doing the same amount of work, but the winner does it in the least amount of time. Thus, power is defined as the rate of doing work. Since work can vary as a function of time, the average power is defined as the work done during a time interval, divided by the time interval.
8.7K
Activation Energy01:26

Activation Energy

85.9K
Activation energy is the minimum amount of energy necessary for a chemical reaction to move forward. The higher the activation energy, the slower the rate of the reaction. However, adding heat to the reaction will increase the rate, since it causes molecules to move faster and increase the likelihood that molecules will collide. The collision and breaking of bonds represents the uphill phase of a reaction and generates the transition state. The transition state is an unstable high-energy state...
85.9K
Application of the Energy Equation01:04

Application of the Energy Equation

1.2K
The application of the energy equation to centrifugal pumps is a fundamental principle in fluid dynamics and engineering. In this scenario, the energy equation is used to calculate the flow rate of a centrifugal pump responsible for transferring water between two reservoirs at different elevations. The pump applies an energy input of 7500 joules per second, and the vertical difference between the lower and upper reservoirs is 10 meters. Additionally, the head loss due to friction and other...
1.2K

You might also read

Related Articles

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

Sort by
Same author

Imaging nodal knots in momentum space through topolectrical circuits.

Nature communications·2020
See all related articles

Related Experiment Video

Updated: Dec 25, 2025

Determining the Contribution of the Energy Systems During Exercise
11:15

Determining the Contribution of the Energy Systems During Exercise

Published on: March 20, 2012

42.3K

How to run 50% faster without external energy.

Amanda Sutrisno1, David J Braun1

  • 1Center for Rehabilitation Engineering and Assistive Technology, Advanced Robotics and Control Laboratory, Vanderbilt University, 2301 Vanderbilt Place, Nashville, TN 37235, USA.

Science Advances
|April 2, 2020
PubMed
Summary

Researchers developed an unpowered robotic exoskeleton that can increase running speed by over 50%. This innovation enhances human mobility without external energy, paving the way for advanced augmentation devices.

More Related Videos

Determining and Controlling External Power Output During Regular Handrim Wheelchair Propulsion
08:55

Determining and Controlling External Power Output During Regular Handrim Wheelchair Propulsion

Published on: February 5, 2020

7.9K
A Real-World High-Intensity Interval Training Protocol for Cardiorespiratory Fitness Improvement
08:27

A Real-World High-Intensity Interval Training Protocol for Cardiorespiratory Fitness Improvement

Published on: February 22, 2022

3.5K

Related Experiment Videos

Last Updated: Dec 25, 2025

Determining the Contribution of the Energy Systems During Exercise
11:15

Determining the Contribution of the Energy Systems During Exercise

Published on: March 20, 2012

42.3K
Determining and Controlling External Power Output During Regular Handrim Wheelchair Propulsion
08:55

Determining and Controlling External Power Output During Regular Handrim Wheelchair Propulsion

Published on: February 5, 2020

7.9K
A Real-World High-Intensity Interval Training Protocol for Cardiorespiratory Fitness Improvement
08:27

A Real-World High-Intensity Interval Training Protocol for Cardiorespiratory Fitness Improvement

Published on: February 22, 2022

3.5K

Area of Science:

  • Biomechanics
  • Robotics
  • Human Augmentation

Background:

  • Next-generation running shoes aim to enhance mobility.
  • The challenge lies in increasing speed without external energy input.
  • Unpowered robotic exoskeletons offer a potential solution for human performance augmentation.

Purpose of the Study:

  • To investigate the potential of unpowered robotic exoskeletons to augment running speed.
  • To determine if a catapult-like exoskeleton can increase top running speed without external energy.
  • To explore the feasibility of human performance augmentation through passive robotic devices.

Main Methods:

  • Development of a catapult-like exoskeleton device.
  • Testing the device's effect on top running speed.
  • Analysis of biomechanical data to understand the mechanism of speed increase.

Main Results:

  • The catapult-like exoskeleton device increased top running speed by more than 50%.
  • The device achieved this speed enhancement without providing external energy.
  • The findings demonstrate the potential of unpowered exoskeletons for performance augmentation.

Conclusions:

  • Unpowered robotic exoskeletons can significantly enhance human running speed.
  • This technology has potential applications in sports, rescue operations, and law enforcement.
  • Further development of passive augmentation devices could revolutionize human mobility.