Articles tagged with Swimming
Competitive swimmers are at risk of shoulder injuries due to the high stress on their joints. Proper technique, training, stretching, and strengthening can help prevent these injuries. Swimmers may experience signs such as a dropped elbow or excessive body roll, which can be diagnosed with a thorough physical examination.
Harmful disinfection by-products (DBPs) form when chlorine and other chemicals react with organic matter in pool water, causing respiratory problems like asthma among swimmers. Practicing good hygiene, such as taking showers before entering the pool, can help reduce DBP levels.
A recent study suggests that Labrador Retrievers may be more susceptible to limber tail due to their genetic predisposition and exposure to cold climates. The research also found that swimming was not a significant risk factor for the condition, contradicting previous speculation.
Drexel researchers create chains of microscopic magnetic bead-based robots that can swim at impressive speeds through a microfluidic environment. The team demonstrates their ability to link and unlink the beads using a rotating magnetic field, paving the way for targeted medicine delivery and minimally invasive surgery.
When bacteria are confined to millimeter-sized, fluid-filled oval tracks, they quickly organize into a collective motion, with individuals moving in opposite directions. The research, published in the New Journal of Physics, shows that mechanical interactions between bacteria and their surroundings drive this complex behavior.
Labradors with elbow dysplasia showed improved mobility and stride characteristics after hydrotherapy, suggesting its potential as a therapeutic tool. The study also found benefits in healthy control groups, indicating swimming can be beneficial for dogs.
A team of scientists at the Monterey Bay Aquarium Research Institute has designed a new camera tag to track white sharks' behavior and habitat. The tag, called the 'Café Cam,' can capture video footage of the sharks for up to nine months, providing unprecedented insights into their lives.
A new study by University of Guelph researchers found that exposure to diluted bitumen impairs swimming ability and changes heart structures in young salmon. The Trans Mountain pipeline expansion project is expected to increase oil sands products reaching the Pacific coast.
Marine invertebrate larvae of sea urchins demonstrate active responses to turbulence and flow conditions by adjusting their swimming speeds. This behavior has significant implications for the adult populations' transport, survival, and recruitment.
Researchers discovered that single-celled algae can coordinate their flagella into leaping, trotting, or galloping gaits, similar to four-legged animals. The networks of elastic fibres within the cell play a crucial role in coordinating these diverse movements.
A study found polar bears are swimming more due to reduced summer sea ice, with adult females covering distances of up to 249 miles in search of food. Climate change is linked to the increased swimming behavior, which may have serious implications for polar bear populations.
Researchers tracked turtles released outside their familiar areas and found most returned home, often within a few hundred meters of their original location. The study's findings have important implications for turtle conservation, supporting the idea that long-term resettlement is not a realistic option.
Researchers at Argonne National Laboratory discovered a way to use microscopic swirling flows to rapidly clear bacteria or swimming robots from circles. This technique could be useful in lab-on-a-chip devices for chemical or biological analyses, and may also help prevent biofilms from forming.
Researchers found that sharkskin's small, tooth-like denticles can increase hydrodynamic drag, unlike riblets which reduce drag. This discovery contradicts long-held assumptions about shark skin's functionality.
Researchers at Imperial College London have visualized bacteria motors with electron microscopes, revealing differences in swimming power and torque. These findings explain why some bacteria can swim through thick mucus while others cannot.
Researchers create microrobots that mimic the movement of ciliates, beating filaments propelled by green light. The robots exhibit wave-like movements and can potentially be used for medical applications, such as detecting and curing diseases.
A new study of fossil tracks in northern China suggests that sauropod dinosaurs were walking, not swimming, despite previous theories. The tracks, dating back over 120 million years, show four or five claw marks at the front and are matched perfectly by the feet of medium-sized sauropod dinosaurs.
Researchers discovered that sea snails use the same technique as flying insects to swim, beating their wings in a figure-of-eight pattern to generate lift. The team, led by David Murphy, used high-speed cameras and advanced analysis to visualize fluid movements around the animals.
A study suggests that sildenafil can reduce pulmonary edema caused by swimming in cold water, a condition known as SIPE. Athletes who take the drug before competitions have successfully completed triathlons and ultra events without incidents.
A research team from the University of Tsukuba found that the S-stroke is more efficient for middle and long distance swimming due to its ability to generate propulsive power with less physical exertion. In contrast, the I-stroke is better suited for short distances where speed over efficiency is prioritized.
Scientists have developed motorized spermbots that can deliver poor swimmers to an egg, improving chances of conception. The technique uses tiny metal helices controlled by a rotating magnetic field and has shown promising results in lab testing.
Researchers at MIT and Cambridge University discovered that bacteria streaming through a lattice behave like electrons in a magnetic material. By tuning the lattice dimensions, they can direct billions of microbes to align and swim in the same direction, similar to electrons orbiting around atomic nuclei.
Researchers used computer simulations to determine that plesiosaurs flapped their front flippers in an underwater flight motion, similar to that of a penguin, to achieve propulsion. The rear flippers were likely used for steering and stability, contradicting previous assumptions about their role.
Researchers found that pesticides can have lasting impacts on aquatic ecosystems, affecting populations of small crustaceans and zooplankton. The study's results suggest that standard toxicity tests may not capture the full extent of pollution in waters.
Researchers discovered that E. coli bacteria move faster and farther in viscoelastic fluids, such as saliva and mucus, than in water. This is because the increase in viscosity allows bacteria to maintain their rotational motion, enabling them to travel longer distances.
Researchers at the University of Bristol have developed a row-bot that can operate indefinitely in remote locations by harnessing energy from dirty water. The robot's bio-inspired mechanism allows it to feed on nutrient-rich water, generating electricity through microbial fuel cells.
The study expands the known distributional range of five squids, including Abraliopsis and Pterygioteuthis, with surprising finds at depths over 600m. These elasmobranch predators play a vital role in the food web, but their abundance is highly dependent on temperature.
Researchers found that zooplankton copepods display energetic behavior in turbulent flows, amplifying the flow's intermittent properties. Their self-induced motion adds to fluctuations in speed, affecting feeding efficiency and ecological modeling.
Researchers found that these animals move forward by sucking water towards them using low pressure, rather than pushing against it. This discovery has significant implications for our understanding of evolutionary adaptation, functional ecology, and bio-inspired design.
Researchers reveal that jellyfish and lampreys suck water towards themselves to move forward, contrary to previous assumptions. By studying the motion of these ancient creatures, scientists gain insights into fluid dynamics, potentially improving human-made technologies such as submarines and ships.
A study by U of T Scarborough and Rotman School of Management found that a high-performing founder can drive a spin-out's success with an experienced team, boosting the firm's ability to start quickly and operate smoothly.
A study published in Frontiers in Psychology found that varying pause times before the starting gun can result in significant differences in finishing times among athletes. The researchers propose introducing a warning step to ensure all athletes are ready before the start, and even suggest computerized procedures to minimize human error.
Researchers at Harvard's John A. Paulson School of Engineering and Applied Sciences have created a flying, swimming robotic bee that can transition between air and water. The microrobot, smaller than a paperclip, uses flapping motions inspired by puffins to propel itself through both mediums.
A Tel Aviv University study finds that oxybenzone, a common chemical in sunscreen lotions, is highly toxic to juvenile corals, causing coral bleaching, DNA damage, and death. Concentrations as low as 62 parts per trillion pose an ecological threat.
NYU researchers found that fish and birds can move in two distinct speeds when swimming in groups, with one speed conserving energy and the other allowing for faster escapes from predators. The study's innovative methodology mimics infinitely large schools using robotic wings and water tank, offering insights into air and water flows.
Researchers have developed a simple mechanism to control the swimming direction of magnetotactic bacteria, which can provide insight into the earth's sedimentary layers and potentially be used as indicators of climate change. The new tool uses a rotating permanent magnet to generate a controlled magnetic field.
Researchers study tiny jellyfish's coordinated multiple jets propulsion system, which could inspire a natural solution for multi-engine organization in underwater-distributed propulsion vehicles. The jellies' ability to turn and maneuver with relatively simple components could lead to more efficient and redundant designs.
A colonial jellyfish-like species, Nanomia bijuga, coordinates multiple jets for whole-group locomotion through an elegant division of labor among young and old members. The colony can rapidly alter course and reverse its direction of swimming due to the long lever arm of the young members.
Female guppies that experience high levels of male harassment in the wild learn to swim more efficiently, reducing energy costs and improving escape abilities. This physiological change is comparable to human athletes' adaptations to their sports.
Researchers discovered single-cell organisms can somersault and bend their bodies to navigate confined spaces, exhibiting unique behaviors such as meandering wanderings and ballistic swimming traits. This finding has significant implications for the study of microfluidics and its applications in various engineering and scientific fields.
Researchers at Brown University found that largemouth bass use their swimming muscles to generate suction power for feeding. The study revealed that up to 95% of the power required for suction comes from the swimming muscles, not the mouth bones.
Researchers found that six-gill and prickly deep-sea sharks are positively buoyant, requiring less energy to swim upward than downward. This adaptation may provide them with a 'stealth' advantage during hunting or aid in nightly migrations to shallower areas.
Researchers from Boston University, University of Michigan, and Chinese Academy of Sciences develop comprehensive solar wind models. The CISM, CSEM, and SIGMA groups create high-performance coupled models to simulate the complex behavior of solar winds and their impact on Earth's environment.
Endothermic fish, including sharks and tunas, can swim two and a half times faster and twice as far as cold-blooded species. This unique physiological characteristic allows them to maximize their swimming distance and speed, providing benefits for hunting and reproduction.
A new study reveals that diverse sea creatures have evolved to swim with elongated fins using the same mechanical motion, maximizing speed and ensuring survival. The researchers found a consistent ratio of 20, known as the optimal specific wavelength (OSW), which is a key finding in understanding convergent evolution.
Researchers used mathematical equations to study how flowing fluid hinders bacterial movement in search of food. The findings suggest that slender bacteria get trapped in high shear regions, affecting their ability to find food but potentially aiding surface colonization.
Researchers found that young sea turtles (6-18 months old) swim actively and disperse through ocean currents, reaching favorable habitats. This discovery has huge implications for understanding early sea turtle survival and behavior.
Scientists are studying Chlamydomonas reinhardtii to understand the behavior of living fluids, which could lead to new treatments for lung diseases like cystic fibrosis. The research team discovered that the algae changes its swim pattern dramatically in elastic fluids, which possess both liquid and solid-like properties.
Researchers at Ruhr-Universität Bochum used CT imaging to examine the buoyancy of ammonite shells. Their analysis suggests that ammonites could have swum freely in water after hatching, contradicting previous theories.
Researchers at Rockefeller University discovered that fast-swimming bacteria can form two-dimensional crystals by clustering together in a lattice structure. The crystals are held together by the rotating motion of individual cells, which creates a unique pattern similar to atoms in mineral crystals.
A unique combination of ecological, environmental, and behavioral factors led to the abundant production and preservation of Early Triassic swim tracks. Delayed ecologic recovery, depositional environments, and tetrapod swimming behavior contributed to their formation.
In the Early Triassic period, a prolonged period of delayed ecological recovery led to the widespread production and preservation of vertebrate swim tracks. This was due to minimal sediment mixing in stressful environments, which created firm-ground substrates ideal for recording subaqueous trace fossils.
Researchers tracked jellyfish movements with GPS loggers and observed their swimming direction to show they can actively swim counter-current in response to drift. The findings could help predict and avoid troublesome jellyfish blooms, improving management of these ocean ecosystems.
A new study reveals that cone snails add a unique form of insulin to their venom cocktail, which disrupts blood glucose levels and causes hypoglycemic shock in fish. The snail insulin may help unlock secrets of insulin function and energy metabolism.
Researchers studied snake and lizard movement through sand, finding the snake's elongated shape and slippery skin reduce friction and increase energy efficiency. The study provides insights into evolutionary pressures on body shape among sand-dwelling animals.
Researchers at the University of Groningen have resolved the 'boxfish swimming paradox' by showing that the fish's triangular shape and body design actually promote manoeuvrability. The study, published in the online journal Interface, challenges a previous American research group's claims about the magical properties of boxfish ridges.
Researchers found three chemicals in swimming pool water: DEET, caffeine, and TCEP. The detection of these chemicals highlights the potential for uncontrolled releases into swimming pools, which can pose risks to swimmers through inhalation, ingestion, or skin absorption.
Scientists have developed a new light-based tool to monitor and improve swimming technique and aid in muscle recovery. The technology uses near-infrared spectroscopy to measure muscle oxygenation underwater, providing valuable feedback for swimmers and helping track rehabilitation progress.
Research by Brown University scientists found that paramecia's buoyancy affects their ability to navigate flat surfaces. Under normal conditions, they use their sensory systems to turn and swim away, but with altered buoyancy, they get stuck at an angle, unable to complete the turn.
Researchers discovered that elephant seals dive more efficiently with moderate body fat by changing their buoyancy. As they add fat stores during months-long migrations, the seals become neutrally buoyant, reducing energy costs and increasing time spent feeding at depth.