Posted in | News | Consumer Robotics

Researchers Study Arm-Reaching Movements Using Robotic Arm

As per the experiments conducted by research teams in Colorado University (CU) subjects who were fitted with robotic arms, could achieve performance with lesser efforts with continued practice. For the purpose of the experiment, 15 subjects who were right handed were fitted with a robotic arm along with a handle similar to a joystick, which could control a cursor on the computer screen.

The subjects were made to perform various tasks such as inward and outward movements and reaching out to a particular target on the computer screen.

It was established that though the subjects learnt a reaching task and the stability in muscle activity was achieved, the amount of energy lost during the performance of the task kept reducing gradually as they kept practicing the movements. The amount of energy in terms of carbon dioxide exhaled and oxygen consumed reduced by 20% when the subject mastered the movements through practice. The subjects of the test were required to exert more energy when the robotic arm created a force field. Initially they were made to perform a series of 200 trials where there was no force field. Then the subjects were made to perform two sets of 250 trials each with the force field. It was found out that the subjects reduced the amount of energy spent by reducing errors. Other data that was collected included electromyographic data by studying the six upper limb muscles when the tasks were performed.

The results of this study could be applied for the rehabilitation of stroke patients who have to relearn how to walk.



Please use one of the following formats to cite this article in your essay, paper or report:

  • APA

    Choi, Andy. (2019, February 20). Researchers Study Arm-Reaching Movements Using Robotic Arm. AZoRobotics. Retrieved on February 25, 2024 from

  • MLA

    Choi, Andy. "Researchers Study Arm-Reaching Movements Using Robotic Arm". AZoRobotics. 25 February 2024. <>.

  • Chicago

    Choi, Andy. "Researchers Study Arm-Reaching Movements Using Robotic Arm". AZoRobotics. (accessed February 25, 2024).

  • Harvard

    Choi, Andy. 2019. Researchers Study Arm-Reaching Movements Using Robotic Arm. AZoRobotics, viewed 25 February 2024,

Tell Us What You Think

Do you have a review, update or anything you would like to add to this news story?

Leave your feedback
Your comment type
Azthena logo powered by Azthena AI

Your AI Assistant finding answers from trusted AZoM content

Azthena logo with the word Azthena

Your AI Powered Scientific Assistant

Hi, I'm Azthena, you can trust me to find commercial scientific answers from

A few things you need to know before we start. Please read and accept to continue.

  • Use of “Azthena” is subject to the terms and conditions of use as set out by OpenAI.
  • Content provided on any AZoNetwork sites are subject to the site Terms & Conditions and Privacy Policy.
  • Large Language Models can make mistakes. Consider checking important information.

Great. Ask your question.

While we only use edited and approved content for Azthena answers, it may on occasions provide incorrect responses. Please confirm any data provided with the related suppliers or authors. We do not provide medical advice, if you search for medical information you must always consult a medical professional before acting on any information provided.

Your questions, but not your email details will be shared with OpenAI and retained for 30 days in accordance with their privacy principles.

Please do not ask questions that use sensitive or confidential information.

Read the full Terms & Conditions.