Space cycle: a human-powered centrifuge that can be used for hypergravity resistance training.

Space cycle: a human-powered centrifuge that can be used for hypergravity resistance training. Research Abstract Details 

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Space cycle: a human-powered centrifuge that can be used for hypergravity resistance training. Abstract Text:

Yifan Yang,Adam Kaplan,Mark Pierre,Greg Adams,Peter Cavanagh,Craig Takahashi,Art Kreitenberg,James Hicks,Joyce Keyak,Vince Caiozzo,

INTRODUCTION: This study represents the first step toward testing the hypothesis that hypergravity can be used as a unique resistance training modality for maintaining the health and function of skeletal muscle in microgravity. The primary objectives of this study were to use a human-powered short-arm centrifuge for the following: 1) to determine whether subjects could perform squats under hypergravity conditions without developing motion sickness or illusory motion; 2) to measure foot forces while performing squats under hypergravity conditions; and 3) to determine the mechanical power required to produce 1.5, 2.0, 2.5, and 3.0 Gz (head to foot) at the feet. METHODS: Subjects (22 males and 19 females) performed 10 squats each at 1.5, 2.0, 2.5, and 3.0 Gz on a human-powered short-arm centrifuge, the space cycle. Foot forces during each squat were monitored using insole force sensors, and normalized to foot forces measured at 1 Gz (relative foot forces). RESULTS: Illusory motion was minimized using a visual focal point, and did not affect the ability of subjects to perform squats. The mean standing relative foot forces at 3.0 Gz were 2.3 and 2.4 for the male and female subjects, respectively. The work rate required to power the space cycle was a linear function of Gz, and is well within the aerobic scope of untrained individuals. DISCUSSION: The findings of this study demonstrate that hypergravity can be used as an effective modality for loading skeletal muscle and that subjects can perform squat resistance exercise without developing motion sickness or illusory motion.

Space cycle: a human-powered centrifuge that can be used for hypergravity resistance training. Publishing Authors By Initials

Y Yang,A Kaplan,M Pierre,G Adams,P Cavanagh,C Takahashi,A Kreitenberg,J Hicks,J Keyak,V Caiozzo,

For similar investigative techniques: weightlessness countermeasures research abstracts see: investigative techniques: weightlessness countermeasures research

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Space cycle: a human-powered centrifuge that can be used for hypergravity resistance training. Journal Published:

PUBLICATION TYPE: Research Support, U.S. Gov't,

Journal: Aviation, space, and environmental medicine

VOLUME: 78

Page Numbers: 2-9

Journal Abbreviation:

ISSN: 0095-6562

DAY: 3

MONTH: Jan

YEAR: 2007

Space cycle: a human-powered centrifuge that can be used for hypergravity resistance training. Information

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LANGUAGE: eng

NlmUniqueID: 7501714

Space cycle: a human-powered centrifuge that can be used for hypergravity resistance training. Keywords Mesh Terms:

KEYWORDS: Weightlessness Countermeasures

MESH TERMS: physiology

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Grant and Affiliation Information for Space cycle: a human-powered centrifuge that can be used for hypergravity resistance training.

AFFILIATION: Department of Orthopedic Surgery, University of California, Irvine, CA 92697, USA.

Country: United States

AGENCY: United States NCRR

GRANT: M01 RR00827

ACRONYM: RR

MEDLINETA: Aviat Space Environ Med

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