In recent years, the intense pressure professional athletes endure has come under scrutiny, highlighted by incidents like gymnast Simone Biles withdrawing from the 2020 Tokyo Olympics and tennis player Naomi Osaka stepping ...
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A randomized clinical trial published in Developmental Medicine & Child Neurology has assessed whether injections of botulinumtoxin-A in calf muscles benefit children with cerebral palsy.
Jul 24, 2024
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Physical inactivity is a killer. When we become inactive, we lose muscular strength. When we lack muscular strength, we may be more likely to experience a host of health issues, including cognitive decline, poor mental health, ...
Jul 22, 2024
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People can reduce their risk of age-related dementia by exercising their brains properly instead of Googling, according to a leading Canadian academic.
Jul 22, 2024
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Humans have been processing food for thousands of years. While some processing can increase food's safety and shelf-life, consuming lots of ultra-processed foods (UPFs) is linked to health issues such as obesity, high blood ...
Jul 20, 2024
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Obesity is known to cause lower testosterone in men, impacting muscle mass and cognition, as well as reproductive function by diminishing sperm numbers and lowering libido. Just how obesity produces these changes, in addition ...
Jul 18, 2024
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The role of creatine in healthy pregnancies is well established, but how much is enough? A study at Hudson Institute of Medical Research has shown what's needed to ensure healthy growth of your baby.
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A power outage can be difficult for anyone, but older adults are especially vulnerable to temperature extremes, with medications or medical conditions affecting their bodies' ability to regulate heat and cold. Additionally, ...
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Building upon groundbreaking research demonstrating how the SARS-CoV-2 virus disrupts mitochondrial function in multiple organs, researchers from Children's Hospital of Philadelphia (CHOP) demonstrated that mitochondrially-targeted ...
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Obesity is a complicated condition, caused by a combination of genetics, the food environment, behavior, and other factors. For millennia, getting enough food to survive and thrive was difficult. For most people, it's now ...
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In physics, energy (from the Greek ἐνέργεια - energeia, "activity, operation", from ἐνεργός - energos, "active, working") is a scalar physical quantity that describes the amount of work that can be performed by a force, an attribute of objects and systems that is subject to a conservation law. Different forms of energy include kinetic, potential, thermal, gravitational, sound, light, elastic, and electromagnetic energy. The forms of energy are often named after a related force.
Any form of energy can be transformed into another form, but the total energy always remains the same. This principle, the conservation of energy, was first postulated in the early 19th century, and applies to any isolated system. According to Noether's theorem, the conservation of energy is a consequence of the fact that the laws of physics do not change over time.
Although the total energy of a system does not change with time, its value may depend on the frame of reference. For example, a seated passenger in a moving airplane has zero kinetic energy relative to the airplane, but non-zero kinetic energy relative to the Earth.
This text uses material from Wikipedia, licensed under CC BY-SA
