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Artificial gravity as a countermeasure for mitigating physiological deconditioning during long-duration space missions.

Clément GR, Bukley AP, Paloski WH - Front Syst Neurosci (2015)

Bottom Line: In spite of the experience gained in human space flight since Yuri Gagarin's historical flight in 1961, there has yet to be identified a completely effective countermeasure for mitigating the effects of weightlessness on humans.Hence, the concept of artificial gravity is to provide a broad-spectrum replacement for the gravitational forces that naturally occur on the Earth's surface, thereby avoiding the physiological deconditioning that takes place in weightlessness.Because researchers have long been concerned by the adverse sensorimotor effects that occur in weightlessness as well as in rotating environments, additional study of the complex interactions among sensorimotor and other physiological systems in rotating environments must be undertaken both on Earth and in space before artificial gravity can be implemented.

View Article: PubMed Central - PubMed

Affiliation: Wyle Science and Engineering Group Houston, TX, USA.

ABSTRACT
In spite of the experience gained in human space flight since Yuri Gagarin's historical flight in 1961, there has yet to be identified a completely effective countermeasure for mitigating the effects of weightlessness on humans. Were astronauts to embark upon a journey to Mars today, the 6-month exposure to weightlessness en route would leave them considerably debilitated, even with the implementation of the suite of piece-meal countermeasures currently employed. Continuous or intermittent exposure to simulated gravitational states on board the spacecraft while traveling to and from Mars, also known as artificial gravity, has the potential for enhancing adaptation to Mars gravity and re-adaptation to Earth gravity. Many physiological functions are adversely affected by the weightless environment of spaceflight because they are calibrated for normal, Earth's gravity. Hence, the concept of artificial gravity is to provide a broad-spectrum replacement for the gravitational forces that naturally occur on the Earth's surface, thereby avoiding the physiological deconditioning that takes place in weightlessness. Because researchers have long been concerned by the adverse sensorimotor effects that occur in weightlessness as well as in rotating environments, additional study of the complex interactions among sensorimotor and other physiological systems in rotating environments must be undertaken both on Earth and in space before artificial gravity can be implemented.

No MeSH data available.


Related in: MedlinePlus

Rationale for evaluating the effects of intermittent short-radius centrifugation during bed rest.
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Figure 4: Rationale for evaluating the effects of intermittent short-radius centrifugation during bed rest.

Mentions: One method for evaluating the effects of different levels or duration of gravity loading on the physiological systems is to test whether intermittent short-radius centrifugation can overcome the deconditioning of bed rest. In these investigations, the physiological responses measured during bed rest alone are compared with the same physiological responses during bed rest and intermittent centrifugation. The assumption is that the differences observed between the responses in the two conditions are due to the net forces acting along the longitudinal body axis (Figure 4).


Artificial gravity as a countermeasure for mitigating physiological deconditioning during long-duration space missions.

Clément GR, Bukley AP, Paloski WH - Front Syst Neurosci (2015)

Rationale for evaluating the effects of intermittent short-radius centrifugation during bed rest.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4470275&req=5

Figure 4: Rationale for evaluating the effects of intermittent short-radius centrifugation during bed rest.
Mentions: One method for evaluating the effects of different levels or duration of gravity loading on the physiological systems is to test whether intermittent short-radius centrifugation can overcome the deconditioning of bed rest. In these investigations, the physiological responses measured during bed rest alone are compared with the same physiological responses during bed rest and intermittent centrifugation. The assumption is that the differences observed between the responses in the two conditions are due to the net forces acting along the longitudinal body axis (Figure 4).

Bottom Line: In spite of the experience gained in human space flight since Yuri Gagarin's historical flight in 1961, there has yet to be identified a completely effective countermeasure for mitigating the effects of weightlessness on humans.Hence, the concept of artificial gravity is to provide a broad-spectrum replacement for the gravitational forces that naturally occur on the Earth's surface, thereby avoiding the physiological deconditioning that takes place in weightlessness.Because researchers have long been concerned by the adverse sensorimotor effects that occur in weightlessness as well as in rotating environments, additional study of the complex interactions among sensorimotor and other physiological systems in rotating environments must be undertaken both on Earth and in space before artificial gravity can be implemented.

View Article: PubMed Central - PubMed

Affiliation: Wyle Science and Engineering Group Houston, TX, USA.

ABSTRACT
In spite of the experience gained in human space flight since Yuri Gagarin's historical flight in 1961, there has yet to be identified a completely effective countermeasure for mitigating the effects of weightlessness on humans. Were astronauts to embark upon a journey to Mars today, the 6-month exposure to weightlessness en route would leave them considerably debilitated, even with the implementation of the suite of piece-meal countermeasures currently employed. Continuous or intermittent exposure to simulated gravitational states on board the spacecraft while traveling to and from Mars, also known as artificial gravity, has the potential for enhancing adaptation to Mars gravity and re-adaptation to Earth gravity. Many physiological functions are adversely affected by the weightless environment of spaceflight because they are calibrated for normal, Earth's gravity. Hence, the concept of artificial gravity is to provide a broad-spectrum replacement for the gravitational forces that naturally occur on the Earth's surface, thereby avoiding the physiological deconditioning that takes place in weightlessness. Because researchers have long been concerned by the adverse sensorimotor effects that occur in weightlessness as well as in rotating environments, additional study of the complex interactions among sensorimotor and other physiological systems in rotating environments must be undertaken both on Earth and in space before artificial gravity can be implemented.

No MeSH data available.


Related in: MedlinePlus