Sports « Weekly Gravy

Bodybuilders are largely unaware that the protein supplements they use to bulk up might harm their fertility, a new study shows. Four out of five male gym enthusiasts (79%) said they use protein supplements as part of their fitness plan, the poll found. But only 14% had considered how those supplements — which contain high levels of the female hormone estrogen — might impact their fertility, researchers found. “Too much female hormone can cause problems with the amount and quality of sperm that a man can produce,” explained lead researcher Meurig Gallagher, an assistant professor studying infertility at the University of Birmingham in the U.K. Men taking these protein supplements also might be unintentionally dosing themselves with steroids, Gallagher added. “Many protein supplements that can be bought have been found to be contaminated by anabolic steroids, which can cause reduced sperm count, shrunken testicles and erectile dysfunction, amongst other things,” Gallagher said. For this study, Gallagher and his colleagues surveyed 152 avid gym-goers. They found that more than half (52%) of male participants had thought about their fertility prior to being asked. “We found that men are genuinely curious about their fertility when prompted, but that they don’t think about it on their own – likely because societally people still think of fertility as a ‘female issue’ and [incorrectly] believe that men’s fertility doesn’t change… read on > read on >

The repeat head injuries suffered by football players, boxers and other athletes appear to affect brain health long after players have given up their sport. New research from Johns Hopkins University in Baltimore could explain why: The persistence in the brain of inflammation tied to the original injury or injuries. “The findings show that participating in repeated collision sports like football may have a direct link to long-term inflammation in the brain,” study senior author Dr. Jennifer Coughlin said in a university news release. She’s an associate professor of psychiatry and behavioral sciences at Hopkins. Key to the new findings is a brain “repair protein,” with the unwieldy name of 18 kDa translocator protein — shortened to TSPO. Whenever a brain sustains injury, TSPO levels quickly rise as the brain tries to heal. TSPO is closely associated with immune cells in the brain called microglia, Coughlin’s group noted. It was thought that spikes in TSPO were only temporary. However, prior studies revealed that levels of the pro-inflammatory protein can remain elevated for up to 17 years. In the new study, the Hopkins team examined PET and MRI brain scans of 27 former NFL players, taken between 2018 and early 2023. They used the scans to compare levels of TSPO in the football players’ brains to those seen in brain scans of 27 former pro college… read on > read on >

FRIDAY, DEC. 1, 2023 (Healthday News) — Millions of American kids and teens love to play the game of baseball, but the sport can leave many with elbow pain and injuries, new research finds. “When we look at the forces that baseball players, even Little League baseball players, deal with during routine practice and games, it becomes apparent why elbow injuries are so common amongst this group,” said study co-author Vandan Patel, a radiology-orthopedics research scholar at Children’s Hospital of Philadelphia (CHOP) in Philadelphia. Recent estimates show that 20% to 40% of youth baseball players between the ages of 9 and 12 complain of elbow pain at least once during the season, the researchers noted. “This does not mean that elbow injuries are inevitable in baseball,” Patel noted. “With proper technique and proper rest, these injuries could potentially be avoided.” What sets these youngsters up for injury in the first place? Throwing a baseball repeatedly stresses the growing bones, joints and muscles of the elbows of players. “We conducted this study in order to better understand the patterns of injuries that can occur among youth baseball players with elbow pain,” said senior study author Dr. Jie Nguyen, director for the section of musculoskeletal imaging in CHOP’s Department of Radiology. “A younger player injures differently than an older player. It is our hope that this data… read on > read on >

Dreary, chilly winter days might cause some year-round runners to think twice about their jog, but recent research suggests the benefits of cold weather running outweigh those of running in warmer conditions. Specifically, cold weather can help runners burn more bad fat, lose more weight and feel healthier overall. “Cold weather doesn’t have to force runners indoors and I encourage my patients to continue safely running outdoors,” said Dr. Joshua Blomgren, an assistant professor at Rush University Medical Center in Chicago. “Exercise is medicine, even in the winter.” Running in cold weather produces less heat stress on the body, which can make a winter jog easier than one in the summer, Blomgren said. Higher body temperatures are associated with increased exertion and strain on the heart, lungs and metabolism. On the other hand, winter running can boost your metabolism at a time when cold temperatures are causing your average metabolism to slow down in an attempt to preserve fat, Blomgren explained. Cold weather jogging tricks the body into stopping that slowdown, helping you maintain a healthy weight. Scientific evidence also suggests that exercising in cold temperatures can help convert “bad” white fat to “good” brown fat, Blomgren said. White fat can cause inflammation and insulin resistance, while brown fat is metabolic tissue that helps burn calories. Blomgren does issue some cautions to folks who choose… read on > read on >

People can walk away their risk of developing type 2 diabetes – but only if they walk fast enough, a new report finds. Folks who walk at least 2.5 miles an hour appear to have a significantly lower risk of type 2 diabetes, according to a study published Nov. 28 in the British Journal of Sports Medicine. That’s the equivalent of 87 steps per minute for men and 100 steps per minute for women, said a team led by Dr Ahmad Jayedi of Semnan University of Medical Sciences in Semnan, Iran. And the faster above that threshold, the better – every half-mile per hour you add to your walking speed is associated with an additional 9% reduction in risk, results show. Walking has been associated with a lower risk of diabetes, but these findings show that a brisk pace is better than a slow amble, researchers said. “While current strategies to increase total walking time are beneficial, it may also be reasonable to encourage people to walk at faster speeds, to further increase the health benefits of walking,” the researchers noted in a journal news release. In this analysis, the team conducted a review of all long-term studies that included data on diabetes risk and walking. They identified 10 relevant studies involving more than a half million people from the United States, the U.K. and… read on > read on >

Evidence that soccer heading — where players use their heads to strike a ball — is dangerous continues to mount. Research to be presented at the Radiological Society of North America (RSNA) annual meeting in Chicago on Tuesday points to a measurable decline in brain structure and function as a result of the practice. “There is enormous worldwide concern for brain injury in general and in the potential for soccer heading to cause long-term adverse brain effects in particular,” said senior study author Dr. Michael Lipton, a professor of radiology and an affiliate professor of biomedical engineering at Columbia University in New York City. “A large part of this concern relates to the potential for changes in young adulthood to confer risk for neuro-degeneration and dementia later in life.” Unlike other studies that have examined adverse effects at one point in time, Lipton’s team looked at brain changes over two years. They asked 148 amateur players (average age: 27) how often they play, practice and head the ball — and in what situations. Their exposure was ranked low, moderate or high. Just over a quarter of participants were women. Players’ verbal learning and memory were assessed and each had a specialized head scan known as diffusion tensor imaging (DTI). These advanced MRI techniques track the movement of water through brain tissue. The images were telling.… read on > read on >

Squats and lunges aren’t the most fun exercises, but a new study says they’ll help save your knees. Folks with strong quads building up their thighs appear to be less likely to require a total knee replacement, according to a presentation scheduled for Monday at a meeting of the Radiological Society of North America (RSNA) in Chicago. Stronger muscles are generally associated with a lower rate of total knee replacement, researchers said in background notes. However, it’s been unclear whether people benefit more from stronger extensor muscles like the quadriceps, which extend the leg, or stronger flexor muscles like hamstrings that bend the leg. “Our study shows that in addition to strong muscles individually, larger extensor muscle groups — relative to hamstring muscle groups — are significantly associated with lower odds of total knee replacement surgery in two to four years,” said Dr. Upasana Upadhyay Bharadwaj, a research fellow in radiology at the University of California-San Francisco School of Medicine. About 14 million U.S. adults have knee arthritis, and more than half will eventually require knee replacement surgery, researchers said. The quads and the hamstrings are of particular interest because they’re the two most important muscle groups to the knee. The quads are located on the front of the thigh. They are the strongest muscle group in the body and are essential to a person’s… read on > read on >

TUESDAY, Nov. 14, 2023 (Healthday News) — There is nothing worse for your heart than sitting, a new study confirms. “The big takeaway from our research is that while small changes to how you move can have a positive effect on heart health, intensity of movement matters,” said study first author Dr. Jo Blodgett, a research fellow with University College London’s Institute of Sport, Exercise & Health. “The most beneficial change we observed was replacing sitting with moderate to vigorous activity — which could be a run, a brisk walk or stair climbing — basically any activity that raises your heart rate and makes you breathe faster, even for a minute or two,” Blodgett added in a university news release. However, even standing and sleeping beat sitting when it came to heart health, the study found. Heart disease is the leading cause of mortality worldwide. In 2021, it was responsible for one in three deaths, and the number of people living with heart disease across the world has doubled since 1997, the researchers said. “We already know that exercise can have real benefits for your cardiovascular health and this encouraging research shows that small adjustments to your daily routine could lower your chances of having a heart attack or stroke,” said James Leiper, associate medical director at the British Heart Foundation, which funded the research.… read on > read on >

Playing professional football, especially if you are a lineman, may shorten your life, a new study suggests. The University of Minnesota researchers thought that perhaps professional football players are unlike “American men in general” in ways that determine their future health. “When we started digging into the literature on later life health outcomes for professional American football players, we were initially surprised to find a relatively large number of studies that found football players lived longer than American men in general,” said study co-author Gina Rumore. She is program development director of the university’s Institute for Social Research and Data Innovation. “We believe a better strategy for understanding the association between playing football and mortality is to compare football players to men who are like them in every respect — except they never played professional football,” Rumore added in a university news release. So, the researchers compared men drafted to play professional football in the 1950s, some of whom played and some of whom never played in any professional league. The investigators then compared professional football players who began their careers in the late 1980s through the mid-1990s to a nationally representative group of men who were employed, not disabled, not poor and who had completed at least three years of college. The first analysis showed that linemen die earlier than otherwise similar men. In… read on > read on >

The ancient art of tai chi, plus a modern twist, may help older adults reverse mild declines in brain power, a new clinical trial reveals. Researchers found that tai chi classes helped older adults improve their subtle problems with cognition (memory and thinking skills). It also helped them with a fundamental multitasking skill: walking while your attention is elsewhere. But while tai chi was effective, a “cognitively enhanced” version that added mental challenges to the mix worked even better, the study found. Experts called the findings — published Oct. 31 in the Annals of Internal Medicine — promising. They support the concept of stimulating seniors’ minds in multiple ways, rather than one. Tai chi is a traditional Chinese practice that combines slow, graceful movement and physical postures with controlled breathing. It’s performed as a moving meditation, and studies over the years have found that it can help older people improve their balance and lower their risk of falls. There is also evidence that tai chi can help seniors sharpen their cognition, said Peter Harmer, a researcher on the new trial. His team wanted to test the effects of adding specific mental challenges to the tai chi practice — based on recent studies suggesting that physical and mental exercise together are better than either alone. Conventional tai chi classes, like most physical exercise classes, are primarily… read on > read on >