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Advanced Exercise Concept Hardware Evaluation: High Eccentric Resistive Overload Exercise Device (EORS_HERO)
Principal Investigator
Research Area:
Behavior and performance
Muscle physiology
Technology development
Species Studied
Scientific Name: Homo sapiens Species: Human

In order to maintain crewmember health during long-duration space flight, exercise is performed to strengthen the body. There will be a need for crewmembers to exercise while in a transit vehicle, which will require a compact exercise device that is capable of allowing exercise at loads that will be beneficial to crew health. As design prototypes are created, there is a need to evaluate the device concepts in order to assess the potential for a given design to meet exercise prescription criteria. The purpose of this evaluation is to quantify the response of the High Eccentric Resistive Overload Exercise Device (HERO) during typical exercise actions by healthy subjects. The data will be used to evaluate the device as a potential exercise countermeasure device for use inflight.

The HERO device works by making use of the energy storage capabilities of compressed air. The device uses a commercially available air cylinder which helps provide the constant force needed for resistive exercise. Also, the device incorporates a motor assembly to allow for a pre-defined eccentric overload (i.e. higher load on the return stroke) of up to 40 pounds. Based on current research this eccentric overload is beneficial in maintaining bone and muscle health.

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Exercise test

Data Information
Data Availability
Archive is complete. Data sets are not publicly available but can be requested.
Data Sets+ Request data

Bench Press
Bent Over Row
Bicep Curl
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Mission/Study Information
Mission Launch/Start Date Landing/End Date Duration
ECP 02/01/2005 12/31/2010 In Progress

Additional Information
Managing NASA Center
Johnson Space Center (JSC)
Responsible NASA Representative
Johnson Space Center LSDA Office
Project Manager: Jessica Keune
Institutional Support
National Aeronautics and Space Administration (NASA)