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A New Study Explores Why the Gym Can Be a COVID-19 Spreading Hotspot

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A New Study Explores Why the Gym Can Be a COVID-19 Spreading Hotspot

COVID-19 has been irritating for gymnasium rats. Even earlier than scientists knew a lot about this specific virus, it was fairly clear that respiration closely in a confined area with a lot of different individuals round doing the identical was a simple strategy to catch a respiratory sickness, and gymnasiums have been among the many first companies to shut early within the pandemic. These suspicions have since been borne out by science: aerosols—tiny droplets that unfold by way of the air after we breathe—have been recognized as a significant supply of COVID-19 transmission, particularly when persons are respiration quicker and extra deeply. All through the pandemic, train at spin courses, health golf equipment and sports activities video games has been recognized because the supply of dozens of recent circumstances.

Now a brand new experiment has given us a extra actual sense of simply what number of aerosols a single particular person can spew throughout an intense exercise—and the outcomes aren’t fairly. In response to analysis by scientists in Germany printed in PNAS on Could 23, individuals emit about 132 occasions as many aerosols per minute throughout excessive depth train than once they’re at relaxation, which the researchers warn raises the danger of an individual contaminated with COVID-19 setting off a superspreader occasion. At relaxation, individuals emitted a mean of 580 particles every minute, however throughout maximal train—through which researchers step by step elevated depth till the topics have been exhausted—individuals emitted a mean of 76,200 particles a minute.

The examine authors acknowledge that their work has limitations. At the start, the pattern dimension was simply 16 individuals. As well as, not one of the topics have been contaminated by COVID-19; within the paper, the researchers observe there was no manner to take action safely, on account of moral issues in regards to the well being dangers for members.

Nonetheless, there have been some beneficial findings to come back out of the work. “[As an exercise physiologist], and we knew earlier than that if you train, there’s extra air popping out of an individual,” says Henning Wackerhage, a co-author and professor of train biology at Technische Universität München. “However we didn’t know earlier than, and which, fairly frankly, I didn’t anticipate, is that additionally after we train arduous: there are extra particles per liter of air.”

The weird experiment design enabled the researchers to get a extra actual sense of the particles launched. Whereas exercising on a stationary bike, every of the 16 topics breathed clear air by way of a silicone face masks, after which exhaled right into a plastic bag. This enabled the researchers to remove sources of contamination and get extra dependable outcomes, says Christian Kähler, a professor on the Institute of Fluid Mechanics and Aerodynamics at Universität der Bundeswehr München who co-authored the examine.

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A number of the members additionally emitted rather more aerosols throughout high-intensity train than others; particularly, fitter individuals with extra expertise in endurance coaching emitted 85% extra aerosols than individuals with out such coaching. Dr. Michael Klompas, a hospital epidemiologist and infectious illness doctor at Brigham and Ladies’s Hospital who didn’t take part within the examine, explains that this can be a operate of the way in which people’ our bodies turn out to be extra environment friendly at shifting massive quantities of air. “They make their muscular tissues do an infinite quantity of labor, and they should assist that by giving their muscular tissues monumental quantities of oxygen and serving to to clear waste merchandise,” he says.

If this provides you pause about your present train routine, remember the fact that not all gyms are alike—and the correct insurance policies and set-up may also help to maintain you secure. As an illustration, the quantity of area per particular person is important; massive areas, particularly these with excessive ceilings, give the air more room, says Thomas Allison, director of Cardiopulmonary Train Testing Laboratories on the Mayo Clinic. Different issues to search for at a gymnasium, says Klompas, are a vaccination requirement, a facility that has professionally measured the air stream and put in place air filters, and, ideally, a testing requirement. In Klompas’ opinion, masks are doubtlessly useful, however aren’t prone to be dependable throughout exercises—looser masks received’t do a lot throughout vigorous train, and it’s impractical to anticipate individuals to put on N95s whereas exerting themselves.

The researchers observe that elements in addition to health standing can even have an effect on what number of aerosols individuals emit. Wackerhage says they’re additionally trying into how elements like physique mass index, age, and lung situation play a job.

Finally, says Klompas, whether or not or not you go to a gymnasium comes right down to your danger tolerance, and weighing the prices and advantages of going to the gymnasium for you, personally. Nonetheless, he says, you shouldn’t faux that figuring out indoors, and round different individuals, doesn’t pose dangers. “For those who’re not keen to get COVID don’t go,” says Klompas. “At a time like now, when there’s loads of COVID round, it’s a excessive danger proposition.”

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Should you stretch before exercise? After? Never? Here’s what to know

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Should you stretch before exercise? After? Never? Here’s what to know
Panamanian gymnast Hillary Heron stretches as she trains for the Olympics at the No Limits Gymnastics Center in Panama City, Saturday, June 15, 2024, ahead of the Games in Paris. Stretching can help make you more flexible, improve range of motion in your joints — and feel good. Credit: AP Photo/Matias Delacroix, File

For many people of a certain age, high school gym class began with reaching for their toes. Then, over the years, we were told it was better to stretch after exercise.

It turns out, both those things can be true, but the differing advice has created some confusion.

Stretching can help make you more flexible, improve range of motion in your joints—and feel good. David Behm, who researches human kinetics at Memorial University of Newfoundland in St. John’s, Canada, offers this advice on when to stretch and how to do it safely:

Warm up first

It’s almost always good to stretch, but it’s better if you warm up first, said Behm, author of “The Science and Physiology of Flexibility and Stretching.” He recommends a light aerobic activity such as jogging, walking or cycling for five or 10 minutes.

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Follow that with some static stretching, the traditional way of reaching and holding a position (think back to that gym class). You can then do activity-specific dynamic stretching, in which you warm up the muscles with repetitive movements like leg lifts.

Behm says one minute is “the magic number” for how long to do static stretching per muscle group without fatigue.

Should you stretch before exercise? After? Never? Here’s what to know
The Chicago Cubs mascot playfully stretches with Seiya Suzuki prior to a spring training baseball game against the Los Angeles Angels, Wednesday, March 6, 2024, in Mesa, Ariz. Stretching can help make you more flexible, improve range of motion in your joints — and feel good. Credit: AP Photo/Matt York, File

Expand your definition of ‘stretching’

Should you always stretch before exercising? If it’s traditional stretching, not necessarily.

The better question, Behm says, is, “Should people increase their range of motion? Should people have better flexibility? And that is yes, because it helps prevent injuries. It helps with health. But you don’t have to stretch to achieve that.”

Resistance training, for instance, can be an effective form of stretching, he said. Doing a chest press increases range of motion in your deltoids and pecs, whether with barbells, dumbbells or machines, so there is no need to stretch beforehand. Just make sure to start with a small amount of weight to warm up and then add more to train.

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“You probably don’t have to do extra stretching unless you’re a gymnast, a figure skater, or even a golfer who needs a great range of motion through that swing,” Behm said.

Nor do you need to stretch first if you’re going for a leisurely run. Simply start with a slow jog to warm up and then increase the pace.

Don’t do it if it hurts

After exercise, “light stretching is OK, as long as you don’t reach a point where you’re feeling pain,” Behm said. Since your muscles will be warm by that point, overdoing it makes you more likely to injure yourself.

Foam rollers can help with muscle recovery and have been shown to increases range of motion as well as stretching.

Should you stretch before exercise? After? Never? Here’s what to know
David Behm, author of “The Science and Physiology of Flexibility and Stretching,: Implications and Applications in Sport Performance and Health” stretches in Philips, Newfoundland, Canada, on May 27, 2024. Credit: David Behm via AP

Do some static stretching before sports

If you’re playing a sport, Behm said, static stretching beforehand helps reduce muscle and tendon injury.

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“If you’re going to do an explosive movement, change of direction, agility, sprint, any of these explosive activities that involve your muscles and tendons,” he said, “you’re going to be stronger if you do static stretching.”

People can especially get in trouble when they go back to a sport they used to play, whether it’s tennis, surfing or any sort of team activity.

Also, stretch both sides equally. Lacking flexibility on one side also can lead to injury.

Should you stretch before exercise? After? Never? Here’s what to know
David Behm, author of “The Science and Physiology of Flexibility and Stretching,: Implications and Applications in Sport Performance and Health” stretches in Philips, Newfoundland, Canada, on May 27, 2024. Credit: David Behm via AP

Sounds simple. Why all the confusion?

Different studies over the years have either encouraged or discouraged stretching before exercise. Behm says that partly because some studies didn’t reflect real-life conditions, or were designed with elite athletes in mind, not regular people.

“If you’re Usain Bolt, it makes a difference,” said Behm. Not so much for the rest of us.

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Daniela Hantuchová in Two-Piece Workout Gear Does a Deadlift

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Daniela Hantuchová in Two-Piece Workout Gear Does a Deadlift

Daniela Hantuchová is a commentator and retired tennis player. While she might no longer be playing professionally, she’s still training hard. In May, Hantuchová hit the gym, and shared a video of herself there on Instagram. In it, she is seen doing deadlifts, lunge squats with a barbell, and leg lifts while on an exercise ball. How does she stay so fit? Read on to see TK ways Daniela Hantuchová stays in shape and the photos that prove they work.

As you can see from her Instagram video, Hantuchová likes to lift weights to stay in shape. ACE Fitness states that lifting weights is a great workout. “Using maximal loads for compound (multi-joint) movements like the deadlift, squat-to-shoulder press, bent-over row or chest press can improve intermuscular coordination, which is the ability of many muscles to work together to generate and control high levels of force through multiple joints.”

Daniela Hantuchova/Instagram

Hantuchová is also seen doing lunge squats with a barbell in her Instagram video. ACE Fitness states that lunge exercises have a lot of benefits. “The lunge is one of the most effective exercises for targeting the lower body. It activates the quads, glutes and hamstrings, and helps improve lower-body strength, balance and stability. And if that isn’t enough to get you lunging, lunging activates the core muscles as well.”

Hantuchová likes to do Pilates to keep herself in shape. She shared this video on Instagram of herself doing exercises on a reformer. Hantuchová captioned the post, “As in life, focus on the balance in all you do.” The Cleveland Clinic states, “The benefits of Pilates are both therapeutic and preventive. The practice may help you recover from an existing injury or manage a chronic musculoskeletal issue. It may also help you establish a healthy baseline, so that when those injuries or issues arise, you’re able to bounce back faster.”

Hantuchová likes to set goals for herself each year. She talked about this in the caption of this Instagram photo. “Setting up goals for next year starts with understanding that it is a continuous work through out the entire year🫶♻️. Think long term, taking small steps every day.”

Tennis is naturally one of the main ways Hantuchová keeps herself in shape. She shared this video of herself on the court on Instagram. Hantuchová talked about her love of tennis in the caption. “Once a passion, forever a passion.🎾 For me playing tennis is like playing piano,it is the art and the beauty of every shot that makes our sport so special and what I was attracted to every since being a little girl🥰. And it is still the same feeling today🫶. What is your passion?”

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No, not sit-ups — here’s the one abs exercise you should do to strengthen your core without weights

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No, not sit-ups — here’s the one abs exercise you should do to strengthen your core without weights

Maybe you’re just bored of sit-ups or they’re off the table from back pain, tight hips, or limited mobility. Great news — you don’t them to build a stronger core. Here’s one abs exercise you can do without sit-ups or weights.

In recent years, the tides have turned as instructors turn their backs on sit-ups in favor of the best abs exercises that are low impact for your back. That doesn’t mean a sit-up doesn’t have value — just that you don’t need the ab exercise to strengthen your core.

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