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ARED
The Advanced Resistive Exercise Device (ARED) is an exercise device designed by NASA to allow for more intense workouts in zero gravity. The device was flown to the International Space Station during STS-126 and installed in 2009 to replace its inefficient predecessor, the Interim Resistance Exercise Device. The device uses a system of vacuum tubes and flywheel cables to simulate the process of free weight exercises, such as squats, deadlifts, and calf raises, workouts which more effectively prevent lower muscle atrophy, though it has the capability to workout any muscle group. The ARED device can accommodate all astronauts on the ISS. Astronauts can lose approximately 15% overall muscle mass throughout a long mission and up to 30% of their lower-body muscle mass. The reason for the change from iRED is that the ARED can deliver up to , double that of the iRED. Specifically, the ARED can support for bar workouts and for cable workouts. The device works through the use of tw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Space Station
The International Space Station (ISS) is a large space station that was Assembly of the International Space Station, assembled and is maintained in low Earth orbit by a collaboration of five space agencies and their contractors: NASA (United States), Roscosmos (Russia), European Space Agency, ESA (Europe), JAXA (Japan), and Canadian Space Agency, CSA (Canada). As the largest space station ever constructed, it primarily serves as a platform for conducting scientific experiments in microgravity and studying the space environment. The station is divided into two main sections: the Russian Orbital Segment (ROS), developed by Roscosmos, and the US Orbital Segment (USOS), built by NASA, ESA, JAXA, and CSA. A striking feature of the ISS is the Integrated Truss Structure, which connect the station’s vast system of solar panels and Spacecraft thermal control, radiators to its pressurized modules. These modules support diverse functions, including scientific research, crew habitation, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NASA
The National Aeronautics and Space Administration (NASA ) is an independent agencies of the United States government, independent agency of the federal government of the United States, US federal government responsible for the United States's civil list of government space agencies, space program, aeronautics research and outer space, space research. National Aeronautics and Space Act, Established in 1958, it succeeded the National Advisory Committee for Aeronautics (NACA) to give the American space development effort a distinct civilian orientation, emphasizing peaceful applications in space science. It has since led most of America's space exploration programs, including Project Mercury, Project Gemini, the 1968–1972 Apollo program missions, the Skylab space station, and the Space Shuttle. Currently, NASA supports the International Space Station (ISS) along with the Commercial Crew Program and oversees the development of the Orion (spacecraft), Orion spacecraft and the Sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weightlessness
Weightlessness is the complete or near-complete absence of the sensation of weight, i.e., zero apparent weight. It is also termed zero g-force, or zero-g (named after the g-force) or, incorrectly, zero gravity. Weight is a measurement of the force on an object at rest in a relatively strong gravitational field (such as on the surface of the Earth). These weight-sensations originate from contact with supporting floors, seats, beds, scales, and the like. A sensation of weight is also produced, even when the gravitational field is zero, when contact forces act upon and overcome a body's inertia by mechanical, non- gravitational forces- such as in a centrifuge, a rotating space station, or within an accelerating vehicle. When the gravitational field is non-uniform, a body in free fall experiences tidal forces and is not stress-free. Near a black hole, such tidal effects can be very strong, leading to ''spaghettification''. In the case of the Earth, the effects are minor, especiall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
STS-126
STS-126 was the one hundred and twenty-fourth NASA Space Shuttle mission, and twenty-second orbital flight of the ''Space Shuttle Endeavour'' (OV-105) to the International Space Station (ISS). The purpose of the mission, referred to as ULF2 by the ISS program, was to deliver equipment and supplies to the station, to service the Integrated Truss Structure, Solar Alpha Rotary Joints (SARJ), and repair the problem in the starboard SARJ that had limited its use since STS-120. STS-126 launched on 15 November 2008 at 00:55:39 UTC from Kennedy Space Center Launch Complex 39A, Launch Pad 39A (LC-39A) at NASA's Kennedy Space Center (KSC) with no delays or issues. ''Endeavour'' successfully docked with the station on 16 November 2008. After spending 15 days, 20 hours, 30 minutes, and 30 seconds docked to the station, during which the crew performed four Extravehicular activity, spacewalks, and transferred cargo, the orbiter undocked on 28 November 2008. Due to poor weather at Kennedy Sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Squat (exercise)
A squat is a strength exercise in which the trainee lowers their hips from a standing position and then stands back up. During the descent, the hip and knee joints flexion, flex while the ankle joint dorsiflexion, dorsiflexes; conversely the hip and knee joints extension (anatomy), extend and the ankle joint plantarflexion, plantarflexes when standing up. Squats are considered a vital exercise for increasing the strength and Muscle hypertrophy, size of the lower body muscles as well as developing core stability, core strength. The primary Anatomical terms of muscle#Agonist, agonist muscles used during the squat are the quadriceps femoris, the adductor magnus, and the gluteus maximus. The squat also Isometric exercise, isometrically uses the erector spinae and the rectus abdominis muscle, abdominal muscles, among others. The squat is one of the three lifts in the strength sport of powerlifting, together with the deadlift and the bench press. It is also considered a staple exerc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deadlift
The deadlift is a strength training exercise in which a weight-loaded barbell is lifted off the ground to the level of the hips, with the torso perpendicular to the floor, before being placed back on the ground. It is one of the three powerlifting movements along with the Squat (exercise), squat and bench press, as well as a quintessential lift in strongman. The all-time world record deadlift stands at , achieved by Iceland's Hafþór Júlíus Björnsson. Two styles of deadlift are commonly used in competition settings: the conventional deadlift and the sumo deadlift. While both of these styles are permitted under the rules of powerlifting, only the conventional stance is permitted in strongman. Execution Form The conventional deadlift can be broken down into three phases: the setup, the initial pull or drive, and the lockout. Setup: When performing a deadlift, a lifter sets in a position that eccentrically loads the gluteus maximus, gluteus minimus, trapezius, biceps femoris, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calf Raises
Calf raises are a method of exercising the triceps surae ( gastrocnemius and soleus), tibialis posterior, and peroneal muscles of the lower leg. The movement performed is plantar flexion, also called ankle extension. Bent-knee Calf raises are sometimes done with a flexed knee, usually roughly 90 degrees. This lessens the stretch in the gastrocnemius (a knee flexor), so the movement is done to emphasize the soleus. Seated Bent-knee calf raises are frequently done in a seated position for comfort. Since the weight of the upper body is rested on the seat, resistance is frequently added. Using bodyweight, one leg could be draped across the other (through external rotation) to exercise unilaterally and double the weight lifted. It can also be executed by using a weight, such as a barbell A barbell is a piece of exercise equipment used in weight training, bodybuilding, Olympic weightlifting, weightlifting, powerlifting and strongman, consisting of a long bar, usually with wei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muscle Atrophy
Muscle atrophy is the loss of skeletal muscle mass. It can be caused by immobility, aging, malnutrition, medications, or a wide range of injuries or diseases that impact the musculoskeletal or nervous system. Muscle atrophy leads to muscle weakness and causes disability. Disuse causes rapid muscle atrophy and often occurs during injury or illness that requires immobilization of a limb or bed rest. Depending on the duration of disuse and the health of the individual, this may be fully reversed with activity. Malnutrition first causes fat loss but may progress to muscle atrophy in prolonged starvation and can be reversed with nutritional therapy. In contrast, cachexia is a wasting syndrome caused by an underlying disease such as cancer that causes dramatic muscle atrophy and cannot be completely reversed with nutritional therapy. Sarcopenia is age-related muscle atrophy and can be slowed by exercise. Finally, diseases of the muscles such as muscular dystrophy or myopathies can caus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astronaut
An astronaut (from the Ancient Greek (), meaning 'star', and (), meaning 'sailor') is a person trained, equipped, and deployed by a List of human spaceflight programs, human spaceflight program to serve as a commander or crew member of a spacecraft. Although generally reserved for professional space travelers, the term is sometimes applied to anyone who travels into space, including scientists, politicians, journalists, and space tourists. "Astronaut" technically applies to all human space travelers regardless of nationality. However, astronauts fielded by Russia or the Soviet Union are typically known instead as cosmonauts (from the Russian "kosmos" (космос), meaning "space", also borrowed from Greek ). Comparatively recent developments in crewed spaceflight made by China have led to the rise of the term taikonaut (from the Standard Chinese, Mandarin "tàikōng" (), meaning "space"), although its use is somewhat informal and its origin is unclear. In China, the People' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lever
A lever is a simple machine consisting of a beam (structure), beam or rigid rod pivoted at a fixed hinge, or '':wikt:fulcrum, fulcrum''. A lever is a rigid body capable of rotating on a point on itself. On the basis of the locations of fulcrum, load, and effort, the lever is divided into Lever#Types of levers, three types. It is one of the six simple machines identified by Renaissance scientists. A lever amplifies an input force to provide a greater output force, which is said to provide leverage, which is mechanical advantage gained in the system, equal to the ratio of the output force to the input force. As such, the lever is a mechanical advantage device, trading off force against movement. Etymology The word "lever" entered English language, English around 1300 from . This sprang from the stem of the verb ''lever'', meaning "to raise". The verb, in turn, goes back to , itself from the adjective ''levis'', meaning "light" (as in "not heavy"). The word's primary origin is the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flywheel Training
Flywheel training is a type of strength training where the resistance required for muscle activation is generated by the inertia of a flywheel instead of gravity from weights as in traditional weight training. In contrast to weight training, flywheel training offers variable resistance throughout the range of motion, which facilitates isoinertial training and eccentric overload. Flywheel training is shown to lead to improvements of strength and power, hypertrophy, muscle activation, muscle length, and tendon stiffness. This in turn can improve athletic performance in speed, jump height, change of direction and resilience to injury. History An early scientific research paper on flywheel training was conducted by researchers Hansen and Lindhard at the University of Copenhagen in 1924 and looked at the maximum realizable work of the elbow flexors. After that, flywheel resistance training was studied in space travelers exposed to microgravity environments to fight the effec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
