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Home Astronomy

Spaceflight as a Mannequin for Learning Age-Associated Muscle Decline

September 26, 2025
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Spaceflight as a Mannequin for Learning Age-Associated Muscle Decline
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How does spaceflight affect sarcopenia, which is a typical age-related muscle decline, particularly for elder adults? That is what a recent study revealed in Stem Cell Stories hopes to handle as a workforce of researchers investigated how microgravity influences muscle cell operate. This research has the potential to assist scientists, mission planners, astronauts, and the general public higher perceive the long-term well being impacts of microgravity on muscle decline and the steps that may be taken to mitigate it.

For the research, the researchers launched skeletal muscle microtissues obtained from each younger and previous grownup donors aboard the SpaceX CRS-25 mission to the Worldwide Area Station (ISS), which occurred between July and August 2022. The purpose of the research was to establish how muscle tissues atrophy throughout extended durations of microgravity and the way electrical stimulation can be utilized to reverse this pattern. This research comes as scientists estimate that astronauts lose roughly 30 % of their skeletal muscle mass whereas being uncovered to microgravity for just one month.

Ultimately, the researchers recognized that microgravity modified 86 muscle-specific age-associated genes whereas noting that the youthful muscle fibers responded extra positively to electrical stimulation than the older muscle fibers. It’s this latter discovering that allows the researchers to supply constructive phrases for addressing the problem for spaceflight within the long-term.

“Utilizing electrical pulses to set off real-time muscle contractions in house, we are able to simulate train and observe the way it helps defend towards fast muscle weakening in microgravity,” said Dr. Siobhan Malany, who’s an affiliate professor within the School of Pharmacy on the College of Florida and a co-author on the research. “This expertise development affords perception into how we would protect muscle well being throughout long-duration house missions and finally, tips on how to fight age-related muscle loss right here on Earth.”

The historical past of muscle loss from microgravity is well-documented and has been examined because the daybreak of human spaceflight. It’s estimated that astronauts can lose roughly 20 % of their muscle mass throughout missions spanning solely 5-11 days, whereas dropping as much as 30 % of their muscle mass on longer missions. This has been decided to end result from the shortage of decrease again and leg muscle tissues wanted since astronauts don’t get up in house. To fight this, ISS astronauts conduct a each day train routine for 2 hours involving a treadmill, bike, and specialised tools designed to simulate weightlifting on Earth.

Current research discussing sarcopenia and spaceflight embrace a 2023 study revealed in Ageing Analysis Evaluations that explored how spaceflight elevated ageing whereas a 2024 study revealed in Scientific Stories mentioned how spaceflight altered organic markers. Examples of how long-term spaceflight can affect muscle loss consists of the one-year mission on the ISS with NASA astronaut Scott Kelly and Russian cosmonaut Mikhail Kornienko, who lived onboard the ISS from March 2015 to March 2016. Upon returning to Earth, each astronauts had been discovered to have misplaced bone and muscle mass throughout their journey, highlighting the significance of higher perceive the physiological impacts of long-term spaceflight.

This most up-to-date research and previous analysis spotlight the significance of elevating consciousness and addressing muscle loss throughout spaceflight, particularly as governments like america and China plan to ship their very own astronauts to the lunar floor throughout the subsequent few years, and Mars someday subsequent decade. Whereas future astronauts on the Moon and Mars received’t expertise full microgravity, as each planetary our bodies exhibit one-sixth and one-third gravity, respectively, protocols like electrical stimulation to counteract muscle loss may show helpful for long-term astronaut well being.

What new connections between spaceflight and sarcopenia will researchers make within the coming years and a long time? Solely time will inform, and this is the reason we science!

As all the time, hold doing science & hold trying up!



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