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Title
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Effects of five days of bed rest with intermittent centrifugation on neurovestibular function
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Author
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Abstract
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| Objectives: We tested whether intermittent short-radius centrifugation was effective for mitigating alteration in balance and gait following bed rest. Methods: Ten male subjects were exposed to 5 days of 6 degrees head-down tilt bed rest with: (a) no countermeasure; (b) daily 1-g centrifugation for a continuous 30-min period; and (c) daily 1-g centrifugation for six periods of 5 min. During and after the bed rest, subjects were asked to scale the severity of neurovestibular symptoms that followed centrifugation or 80 degrees head-up tilt. Following the bed rest, equilibrium scores were derived from anterior-posterior sway while standing on a foam pad with the eyes open or closed while making pitch head movements, and gait was evaluated by grading subjects' performance during various locomotion tasks. Results: At the beginning of bed rest, one single 30-min period of centrifugation induced more severe neurovestibular symptoms than six periods of 5-min centrifugation. After bed rest, although equilibrium scores and gait performance were not significantly altered, subjects felt less neurovestibular dysfunction with orthostatic stress when centrifugation was used. Conclusion: Centrifugation was effective at reducing the severity of neurovestibular symptoms after bed rest, but this decrease was not different between one or multiple daily sessions. |
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Language
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English
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Source (journal)
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The Journal of Musculoskeletal and Neuronal Interactions
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Publication
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2015
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ISSN
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1108-7161
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Volume/pages
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15
:1
(2015)
, p. 60-68
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ISI
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000352007200007
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Pubmed ID
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25730653
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Full text (publisher's version - intranet only)
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