Health/Fitness « Weekly Gravy

People with the heart-rhythm disorder known as atrial fibrillation, or a-fib, may ease their symptoms with the help of a slower-paced yoga, a preliminary study finds. Researchers from India found that over 16 weeks of yoga sessions, a-fib patients saw their symptom episodes drop by about half. Their mental well-being got a boost as well. The findings, which were presented this week at an online meeting of the European Society of Cardiology, should be considered preliminary until published in a peer-reviewed journal. But the report adds to evidence that yoga can help control a-fib symptoms, which include palpitations, dizziness and breathlessness. In 2013, Dr. Dhanunjaya Lakkireddy led a small study of a-fib patients that came to similar conclusions: Slower-paced yoga, with a focus on breathing and mindful physical poses, helped people reduce their symptoms. The benefits may stem from yoga’s calming effects on the nervous system, explained Lakkireddy, who is medical director of the Kansas City Heart Rhythm Institute, at HCA Midwest Health in Kansas. He was not involved with the new report. People with a-fib, Lakkireddy said, tend to have an exaggerated “sympathetic tone” — which refers to the arm of the nervous system that, among other jobs, revs up heart rate and blood pressure. Yoga may counter that, according to Lakkireddy. But in a world where yoga classes are often geared toward a… read on >

Injuries can continue to plague rugby players long after they retire, a new study finds. Researchers examined injuries suffered by 254 retired elite and amateur rugby players and competitors in non-contact sports, such as cricket. The athletes were 21 to 82 years of age. Compared to athletes who played non-contact sports, rugby players were 1.7 to 7.3 times more likely to report an injury and 2.4 to 9.7 times more likely to report long-term effects, the findings showed. Rugby players reported back pain, and severe and regular joint pain, which they attributed to injuries suffered on the field, according to the report published online recently in the journal Sports Medicine. Concussion was the most frequently reported injury among those who played rugby, with 81% of elite and 76% of amateur players reporting at least one during their career. Concussion was most often associated with reports of long-term impacts. About half of players had suffered a knee ligament injury, with 25% experiencing ongoing problems. Osteoarthritis — which causes joints to become painful and stiff — was two times more common in elite rugby players than in non-contact athletes. It was associated with previous injuries and surgery. More than half of retired elite players said they had been diagnosed with osteoarthritis, according to the study. Study author Karen Hind, of the department of sport and exercise sciences… read on >

If your knees crack when you walk or run, don’t be too worried, an expert says. “Knee cracking could mean lots of things,” said Harshvardhan Singh, assistant professor in the department of physical therapy at the University of Alabama at Birmingham. “If it is painful, then you should see a health care provider.” The cause can be a large kneecap that doesn’t fit well into the groove, producing cracking during activities such as running and jogging. And if the thigh muscle is too tight, it can pull the kneecap, causing an audible crack. Degeneration of knee cartilage can, too. “The degenerative changes can also lead to pain and/or locking of the knee joint,” Singh said in a university news release. “Typically, degenerative changes are common in older people.” Scans have shown that the displacement of joint surfaces forming the knee can cause a chain reaction in which natural gas bubbles collapse. The result: knee cracking. “You should not be worried if your knees crack often as long as it is not associated with pain,” Singh said. If you have had a recent trauma to the knee and it starts to crack, you should see a doctor even in there’s no pain, he said. “Do not allow these sounds to make you feel abnormal or mentally stressed, or limit your functional activities,” Singh said. “A knee… read on >

Kids suffering from nearsightedness can slow the progression of their myopia by using soft bifocal contact lenses, a new trial shows. Bifocal contacts with a powerful corrective prescription slowed the progression of nearsightedness in youngsters by 43% compared to single-vision contacts, the results showed. “The higher the reading portion of the contact lens, the better control you get, the more slow the progression,” said lead researcher Jeffrey Walline, associate dean for research at Ohio State University’s College of Optometry, in Columbus. Based on these findings, Walline said parents should talk with their family eye doctor about bifocal contacts for their nearsighted child, to prevent potentially devastating eye conditions associated with myopia, including cataracts, glaucoma or retinal detachment. “It’s not something that’s coming out farther on down the line. They are available,” Walline said. “I think we’re at the place where parents of nearsighted children should know they have options for myopia control.” Nearsightedness occurs when the eye grows in an uncoordinated way into an elongated state, so that light entering the eye fails to reach all the way back to the retina. “That’s what myopia is,” said Dr. Douglas Fredrick, a pediatric ophthalmologist at New York Eye and Ear Infirmary of Mount Sinai in New York City. “It’s a long eyeball, the physical elongation of the eye.” Eye experts used to think that nearsightedness developed… read on >

All-terrain vehicles (ATVs) are a big draw for adventure-loving kids, but a new study warns that the thrill ride can often land children in the ER. U.S. data shows that nearly 280,000 children were treated over a 25-year period for head and neck injuries caused by ATV accidents. That’s about 31 children each day — and nearly half of them were younger than 12, the researchers reported. “I think it largely confirmed what we were concerned about, which was how frequent these injuries were occurring and how serious they were,” said Dr. Gary Smith, director of the Center for Injury Research and Policy at Nationwide Children’s Hospital in Columbus, Ohio. The fact that 46% of ATV-related head and neck injuries among kids occurred among those aged 12 or younger was particularly worrisome, Smith said. “These are large, powerful machines. They’re designed for off-road use. By definition, when you take this type of powerful machine off road, it requires an advanced degree of coordination, strength and moment-to-moment decision-making on uneven terrain,” Smith said. “And a child at 12 years of age just simply doesn’t possess that degree of skill. They just developmentally aren’t ready.” That’s true even for the lighter, smaller ATVs designed for kids, Smith added. The study looked at data from the U.S. National Electronic Injury Surveillance System to research injuries over a 25-year… read on >

Feeling woozy when you stand up may be a sign of an increased risk of developing dementia, a new study suggests. Doctors call this feeling “orthostatic hypotension,” and it occurs when there’s a sudden drop in blood pressure as you stand, explained a team of researchers from the University of California, San Francisco (UCSF). The researchers found a connection between orthostatic hypotension and later onset of dementia with a drop in systolic blood pressure of at least 15 mm Hg, but not diastolic blood pressure or blood pressure overall. Systolic blood pressure is the top number in a blood pressure reading. The finding suggests that “people’s blood pressure when they move from sitting to standing should be monitored,” UCSF researcher Dr. Laure Rouch said in a news release from the American Academy of Neurology. “It’s possible that controlling these blood pressure drops could be a promising way to help preserve people’s thinking and memory skills as they age.” Rouch cautioned that this study couldn’t prove that orthostatic hypotension causes dementia, only that there appears to be an association. In the study, her team tracked the medical history of more than 2,100 people who averaged 73 years of age and did not have dementia at the beginning of the study. Over the next 12 years, 22% of these individuals developed dementia. Those with systolic orthostatic hypotension… read on >

The makeup of bacteria that colonize a man’s penis can help predict the risk of a serious and hard-to-treat vaginal infection in his female partner, new research suggests. Bacterial vaginosis, also known as BV, can lead to problems in pregnancy and make a woman more vulnerable to several sexually transmitted diseases. More than 20% of women worldwide get BV. For this study, researchers tracked 168 couples and found that women whose partner had BV-related bacteria on their penis were more likely to develop BV within a year. “Our results show that penile bacteria can accurately predict new cases of BV in women who did not have BV to begin with, up to six to 12 months in the future,” said lead author Supriya Mehta. “This is important, because it suggests that reducing these bacteria from the penis may reduce BV cases or improve treatment outcomes in women.” Mehta is an associate professor of epidemiology at the University of Illinois at Chicago. The study authors stressed that they are not saying that exposure to certain types of penile bacteria actually causes BV, though that’s possible. But it’s also possible that, over time, or with repeated exposure, penile bacteria may upset the natural balance of microbes in a woman’s vagina, indirectly raising her BV risk. Mehta noted that BV can be related to behaviors other than sex,… read on >

Concussion symptoms aren’t always evident, so parents of student-athletes need to know the signs and seek a diagnosis if their teen gets hurt, experts say. Only those closest to a teen may be able to identify the sometimes subtle changes in mood and emotion stemming from a concussion, said Dr. Rory Tucker, a sports medicine specialist at Penn State Bone and Joint Institute in Hershey, Penn. “Parents may notice a change in their teen’s sleep patterns,” Tucker explained. “He or she may be more withdrawn, socializing less with friends or family members, more emotional or tearful. They may have anger outbursts or be more nervous than they were before.” Since doctors may be unfamiliar with a patient’s usual mental state, parents need to advocate for their children. “Medication is rarely necessary in the long term, but while a concussion is healing, it can sometimes be beneficial to take medication to control moods,” Tucker said in a Penn State news release. “We also use medications to assist with sleep. Impairment of sleep can have a detrimental impact on emotional health and how people interact with others.” It’s also important for parents to know that concussion symptoms can be similar to those of depression and anxiety, and that a concussion can worsen existing mental health problems. Dr. Craig DiGiovanni is a postdoctoral fellow in psychiatry and behavioral… read on >

If you’re working from a home office these days, it’s important to have an environment that won’t injure you, an expert says. It’s good to have a break about every 30 minutes to protect your back, shoulders and arms, said Kermit Davis, an expert in office ergonomics at the University of Cincinnati College of Medicine. “The body doesn’t like static postures continually,” he said. “You don’t want to do all sitting or all standing all the time. You want to alter your position and change it up throughout the day.” Davis said that while you can work at home, you can’t take home all the comforts of your office. “You can use your laptop from home, but it is designed to be a short-term option,” he said. “It should be used for a few hours while traveling. It is not meant to be used for eight or nine hours each day.” An evaluation of home workstations of university employees who began working at home during the coronavirus pandemic was revealing. Many chairs were the wrong height: 41% were too low; 2% were too high. Although 53% of workers’ chairs had armrests, 32% didn’t use them and 18% were improperly adjusted. Not using armrests can put stress on forearms and strain in the upper back. The evaluation also found that 69% were not using the chairback… read on >

A simple blood test may predict which COVID-19 patients are likely to get worse and die, a new study suggests. “When we first started treating COVID-19 patients, we watched them get better or get worse, but we didn’t know why,” said researcher Dr. Juan Reyes. He’s an assistant professor of medicine at the George Washington School of Medicine and Health Sciences, in Washington, D.C. “Some initial studies had come out of China showing certain biomarkers were associated with bad outcomes. There was a desire to see if that was true for our patients here in the U.S.,” Reyes said in a school news release. For the study, Reyes and his colleagues evaluated nearly 300 patients with COVID-19 admitted to George Washington Hospital between March 12 and May 9, 2020. Of these, 200 had all the biomarkers being studied, namely, IL-6, D-dimer, CRP, LDH and ferritin. Higher levels of these markers were tied with inflammation and bleeding disorders, and an increased risk of being admitted to the intensive care unit, needing ventilator support, and death, the researchers found. Study author Dr. Shant Ayanian said, “We hope these biomarkers help physicians determine how aggressively they need to treat patients, whether a patient should be discharged, and how to monitor patients who are going home, among other clinical decisions.” Ayanian is an assistant professor of medicine at George… read on >