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Biomechanical Modeling of the Deadlift Exercise to Improve the Efficacy of Resistive Exercise Microgravity CountermeasuresDuring long-duration spaceflight missions, astronauts exposure to microgravity without adequate countermeasures can result in losses of muscular strength and endurance, as well as loss of bone mass. As a countermeasure to this challenge, astronauts engage in resistive exercise during spaceflight to maintain their musculoskeletal function. The Hybrid Ultimate Lifting Kit (HULK) has been designed as a prototype exercise device for an exploration-class vehicle; the HULK features a much smaller footprint than previous devices such as the Advanced Resistive Exercise Device (ARED) on the International Space Station (ISS), which makes the HULK suitable for extended spaceflight missions in vehicles with limited volume. As current ISS exercise countermeasure equipment represents an improvement over previous generations of such devices, the ARED is being employed as a benchmark of functional performance. This project involves the development of a biomechanical model of the deadlift exercise, and is novel in that it is the first exercise analyzed in this context to include the upper limbs in the loading path, in contrast to the squat, single-leg squat, and heel raise exercises also being modeled by our team. OpenSim software is employed to develop these biomechanical models of humans performing resistive exercises to assess and improve the new exercise device designs. Analyses include determining differences in joint and muscle forces when using different loading strategies with the device, comparing and contrasting with the ARED benchmark, and determining whether the loading is sufficient to maintain musculoskeletal health. During data collection, the number of repetitions, load, cadence, stance, and grip width are controlled in order to facilitate comparisons between loading configurations. To date, data have been collected for two human subjects performing the deadlift exercise on the HULK device using two different loading conditions. Recorded data include motion capture, electromyography (EMG), ground reaction forces, device load cell data, photos and videos, and anthropometric data. Work is ongoing to perform biomechanical analyses including inverse kinematics and inverse dynamics to compare different versions of the deadlift model in order to determine which provides an appropriate level of detail to study this exercise. This work is supported by the National Space Biomedical Research Institute through NCC 9-58.
Document ID
20170004566
Acquisition Source
Glenn Research Center
Document Type
Presentation
Authors
Jagodnik, K. M.
(National Space Biomedical Research Inst. (NSBRI) Houston, TX, United States)
Thompson, W. K.
(NASA Glenn Research Center Cleveland, OH United States)
Gallo, C. A.
(NASA Glenn Research Center Cleveland, OH United States)
DeWitt, J. K.
(Wyle Labs., Inc. Houston, TX, United States)
Funk, J. H.
(Zin Technologies, Inc. Cleveland, OH, United States)
Funk, N. W.
(Zin Technologies, Inc. Cleveland, OH, United States)
Perusek, G. P.
(NASA Glenn Research Center Cleveland, OH United States)
Sheehan, C. C.
(Zin Technologies, Inc. Cleveland, OH, United States)
Lewandowski, B. E.
(NASA Glenn Research Center Cleveland, OH United States)
Date Acquired
May 15, 2017
Publication Date
October 26, 2016
Subject Category
Aerospace Medicine
Report/Patent Number
GRC-E-DAA-TN36771
Meeting Information
Meeting: American Society for Gravitational and Space Research Meeting
Location: Cleveland, OH
Country: United States
Start Date: October 26, 2016
End Date: October 29, 2016
Sponsors: American Society for Gravitational and Space Research
Funding Number(s)
WBS: WBS 516724.01.02.10
CONTRACT_GRANT: NNC14CA02C
CONTRACT_GRANT: NCC 9-58
CONTRACT_GRANT: NNJ15HK11B
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
physical exercise
microgravity
mathematical models
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