Wednesday, May 14, 2025

 

The power of play for children with autism


Study reveals cognitive, behavioral benefits of whole-body movement


University of Delaware

Why movement matters 

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A recent study by physical therapy professor Anjana Bhat found cognitive benefits to whole-body movement in children with autism.

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Credit: Ashley Barnas Larrimore/ University of Delaware




Step into physical therapy professor Anjana Bhat’s colorful Move 2 Learn Innovation Lab on the University of Delaware’s Science, Technology and Advanced Research (STAR) Campus, and you may see children moving to the beat or leaping over structures as part of an obstacle course. For them, it’s fun and games. But for researchers like Bhat, it’s an exploration of how play affects cognitive functioning in children with autism.  

Bhat’s intervention research, funded by the Delaware INBRE Pilot Project Award, separated autistic children ages 5 to 15 into two groups: a whole-body movement group and a sedentary play group. 

Children in the movement group participated in a gross motor intervention involving full-body exercise.

“There was a lot of decision-making involved,” Bhat explained. “Children can choose to jump over cups or leap over spots. The child had to make these choices ahead of time and cycle through the activity.”

Sometimes music played, and children had to move in sync with an adult.

They’d make music with drums, bells and cymbals, or dance with an adult who switched between moving fast and slow, Bhat said. 

Meanwhile, children in the sedentary play group engaged in seated activities like building with blocks, arts and crafts, or reading.  

Research published in the journal Disability and Rehabilitation found that children who engaged in whole-body movement saw improved executive functioning.

“These are the skills required in daily life to make decisions and choices about how to do an activity with multiple parts,” Bhat said. "It requires a lot of thinking ahead so the task becomes fluid.”

Bhat also noted that exercise increases blood supply to the prefrontal cortex — the part of the brain involved in executive functioning.  

“That’s another reason we may see generally improved cognitive performance following exercise,” she said. 

No improvements in cognitive function were observed in the sedentary play group. 

The study, which spanned from 2020 to 2022, included children who participated either face-to-face or via telehealth. 

“Positive outcomes were seen across both subgroups, proving the intervention is effective whether delivered via Zoom or in person,” Bhat said.

Next, Bhat hopes to use these findings to obtain federal funding for a larger study that uses neuroimaging to validate behavioral findings.

Why movement matters

Executive functioning and cognitive performance are linked to behavior.

“Past research shows that in children with autism, those with better executive functioning present with fewer negative and repetitive behaviors,” Bhat said. “That association was also seen in our study.”

In a separate exergaming study, Bhat observed similar positive impacts on improved executive function as children played sports games using Ring Fit, further reinforcing the connection between movement and cognitive gains.

Despite these promising findings, Bhat says children with autism often receive occupational therapy (OT) focused mainly on fine motor skills and emotional regulation, while gross motor challenges are largely overlooked.

“Physical therapists don’t get referrals for autism, and gross motor issues in this population are largely unaddressed, and the issues extend into adulthood,” Bhat said. 

Kamryn Lombardi, a 2023 graduate of UD’s College of Health Sciences integrated health sciences program, obtained her master’s in OT from Thomas Jefferson University. At UD, she worked on this research in Bhat’s lab and now incorporates movement breaks into her practice as a pediatric occupational therapist. 

“Incorporating movement-based activities even when we’re working on fine motor skills contributes to enhancing engagement," Lombardi said. "Improving their ability to focus enhances their ability to participate in therapy and work toward their goals.”

It’s still unclear whether the cognitive benefits of whole-body movement extend into children’s daily lives outside structured sessions. However, Bhat’s findings show the need for more movement breaks in school settings. 

“Post-exercise, you will see improved attention span and learning ability,” Bhat said. “I don’t think it’s happening enough, especially at the middle-school level. As students get older, physical education time is reduced, resulting in students spending more sedentary time in the classroom.”

For Fei Shan, the benefits of movement are clear. As a mother of two boys with autism who have participated in Bhat’s movement studies, she has witnessed firsthand how movement positively impacts her children’s daily lives.

“We hike, swim and do Taekwondo. Movement has been life-changing for my children,” Shan said. “Even 20 minutes daily makes them more in sync and more focused on their daily tasks.”


Xavier Luckett and his little brother participate in a movement study with Anjana Bhat’s research team, including biomechanics and movement science alumna Wan-Chun Su (left) and Kamryn Lombardi (right), who studied integrated health sciences at UD and went on to obtain her occupational therapy degree at Jefferson.

Grant funds movement study [VIDEO] | 

Anjana Bhat, associate professor in the University of Delaware’s Physical Therapy department, has been awarded an R01 grant through the NIH for the next three years. Bhat will look at a timely SPARK study dataset of 24,000 school-aged children with Autism Spectrum Disorder (ASD). The goal of Bhat’s grant-funded research is to better understand motor problems in children with ASD – their prevalence and relationship to other problems in ASD.

Credit

Ashley Barnas Larrimore/ University of Delaware

 

Caltech's CARL-bot catches an underwater wave




California Institute of Technology
Caltech's CARL-BOT Catches an Underwater Wave 

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Caltech engineers in John Dabiri’s lab have taught a simple submarine robot to take advantage of turbulent forces to propel itself through water. Dabiri and his former graduate student Peter Gunnarson (PhD '24), who is now at Brown University, used CARL-Bot's single onboard accelerometer to measure how it was moving and being pushed around by vortex rings. The team developed simple commands to help CARL detect a vortex ring's relative location and to then position itself to, in Gunnarson's words, "hop on and catch a ride basically for free across the tank."

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Credit: Caltech




Small autonomous underwater vehicles, like the drones of the sea, could be very useful for studying the depths of the ocean and monitoring its changing conditions. But such nautical mini bots can be easily overpowered by turbulent ocean currents.

Caltech scientists led by John Dabiri (PhD '05), the Centennial Professor of Aeronautics and Mechanical Engineering, have been taking advantage of the natural ability of jellyfish to traverse and plumb the ocean, outfitting them with electronics and prosthetic "hats" with which the creatures can carry small payloads on their nautical journeys and report their findings back to the surface. These bionic jellyfish must contend with the ebb and flow of the currents they encounter, but the brainless creatures do not make decisions about how best to navigate to a destination, and once they are deployed, they cannot be remotely controlled.

"We know that augmented jellyfish can be great ocean explorers, but they don't have a brain," Dabiri says. "So, one of the things we've been working on is developing what that brain would look like if we were to imbue these systems with the ability to make decisions underwater."

Now Dabiri and his former graduate student Peter Gunnarson (PhD '24), who is now at Brown University, have figured out a way to simplify that decision-making process and help a robot, or potentially an augmented jellyfish, catch a ride on the turbulent vortices created by ocean currents rather than fighting against them. The researchers recently published their findings in the journal PNAS Nexus.

For this work, Gunnarson returned to an old friend in the lab: CARL-Bot (Caltech Autonomous Reinforcement Learning roBot). Gunnarson built the CARL-Bot years ago as part of his work to begin incorporating artificial intelligence into such a bot's navigation technique. But Gunnarson recently figured out a simpler way than AI to have such a system make decisions underwater.

"We were brainstorming ways that underwater vehicles could use turbulent water currents for propulsion and wondered if, instead of them being a problem, they could be an advantage for these smaller vehicles," Gunnarson says.

Gunnarson wanted to understand exactly how a current pushes a robot around. He attached a thruster to the wall of a 16-foot-long tank in Dabiri's lab in the Guggenheim Aeronautical Laboratory on Caltech's campus in order to repeatedly generate what are called vortex rings—basically the underwater equivalents of smoke rings. Vortex rings are a good representation of the types of disturbances an underwater explorer would encounter in the chaotic fluid flow of the ocean.

Gunnarson began using the CARL-Bot's single onboard accelerometer to measure how it was moving and being pushed around by vortex rings. He noticed that, every once in a while, the robot would get caught up in a vortex ring and be pushed clear across the tank. He and his colleagues started to wonder if the effect could be done intentionally.

To explore this, the team developed simple commands to help CARL detect a vortex ring's relative location and then position itself to, in Gunnarson's words, "hop on and catch a ride basically for free across the tank." Alternatively, the bot can decide to get out of the way of a vortex ring it does not want to get pushed by.

Dabiri points out that this process includes elements of biomimicry, stealing a page from nature's playbook. Soaring birds, for example, will often take advantage of strong winds to save energy rather than attempt to fly against them. Experiments have also shown that fish may allow themselves to be carried by the ocean's swirling currents to help conserve energy. However, in both natural cases, the systems are using relatively sophisticated sensory input and a brain to accomplish this.

"What Peter has figured out is that basically with a single sensor, this one accelerometer, and relatively simple control laws, we can achieve similar advantages in terms of using the energy in the environment to go from point A to point B," Dabiri says.

Looking to the future, Dabiri hopes to marry this work with his hybrid jellyfish. "With the jellyfish, we can have an onboard accelerometer measure how this system is getting pushed around," he says. "Hopefully, we can demonstrate a similar capability to take advantage of environmental flows to move more efficiently through the water."

The PNAS Nexus paper is titled "Surfing vortex rings for energy-efficient propulsion." The work was supported by the National Science Foundation.


Caltech engineers have taught the CARL-Bot to position itself such that it can catch a ride on underwater vortex rings rather than fighting the turbulence.

Credit

Caltech

 

Workplace culture, not policies, biggest factor in helping employees disclose mental health concerns: SFU study



A Simon Fraser University new study is challenging a commonly held misconception that there’s little organizations can do to encourage employees to disclose mental health concerns.




Simon Fraser University





A Simon Fraser University new study is challenging a commonly held misconception that there’s little organizations can do to encourage employees to disclose mental health concerns.

World Health Organization data shows 15 per cent of adults have a mental health concern, while other surveys have found 65 per cent of employees believe mental health concerns interfere with their job. Yet many organizations, even those with mental health supports and programs, see disclosure as a personal decision they have no influence over. 

“That’s just not what we saw in the data,” says Zhanna Lyubykh, assistant professor at Beedie School of Business and lead author of the study published in Human Resource Management. “Organizations can do a lot to help employees disclose. Much of it comes down to employee perceptions of how disclosure is going to be handled, which is absolutely within an organization’s control.”  

The study found people were 55 per cent more likely to disclose mental health concerns to their employer when they perceived their organization as supportive. Beyond feeling they won’t be discriminated against or stigmatized, Lyubykh says a supportive workplace means people feel truly supported and that they’ll benefit from accessing organizational supports and programs. 

This is where employers can step up, she says. Her research revealed the presence of social supports — the subtle environmental cues people pick up on — is the most significant factor that impacts an employee's willingness to disclose. 

“People notice things and log them, sometimes consciously and sometimes not,” she explains. “Did they see someone who recently disclosed get passed over for a promotion? Are open, understanding conversations about mental health encouraged and happening among co-workers? Did it take six months and 100 forms for a co-worker to actually get access to the supports they were entitled to? And when that person received those supports, were they really beneficial?” 

It’s a classic example of actions speaking louder than words (or policies).  

Lyubykh’s research included two survey-based studies. The first study parsed the difference between employees’ willingness to disclose and actual disclosure rates and looked at factors that influenced employee decision-making. The second study examined the connection between organizational support for mental health and wellbeing and absenteeism.  

Researchers found low disclosure rates and poor employee perceptions were linked to higher absenteeism, increased anxiety, and lower productivity and performance. But the opposite was also true: The benefits of a supportive workplace touch every level of an organization, from people to paper, says Lyubykh.  

“Competent people don’t want to stay in an unsupportive or toxic environment. Now you have the attrition of high performers on top of other costly problems,” she adds. “If an organization cares about the bottom line, they should really care about the environment they’re creating, because that’s going to be their competitive advantage.” 

With so much of an organization’s success resting on their employees’ perception of a supportive environment, Lyubykh hopes organizations adapt existing workplace surveys to ask specific questions around how comfortable people feel talking about mental health concerns in the workplace.  

“That will give organizations a solid benchmark, help them track perceptions over time,” she says. “Organizations have the responsibility and power to change things. And change starts at the leadership level.” 

 

Olympic anti-doping lab puts U.S. meat supply to the test



Positive tests resulting from meat consumption “highly unlikely”



University of California - Los Angeles Health Sciences

Instrumentation at the UCLA Olympic Analytical Lab 

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Lab instrument at the UCLA Olympic Analytical Laboratory

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Credit: UCLA Health




Scientists at UCLA's Olympic Analytical Laboratory turned their sophisticated analytical capabilities for testing athlete samples for performance-enhancing drugs to research examining the U.S. meat supply as part of a study led by Texas Tech. The study was designed to investigate concerns that residues of growth promoters used in meat production could potentially cause athletes to test positive.

The laboratory, which typically searches for prohibited substances in urine and blood samples from elite athletes, took part in a comprehensive year-long surveillance study funded by the Partnership for Clean Competition (PCC) examining beef, pork, and chicken purchased from retail outlets across eight U.S. cities.

Growth-promoting substances like ractopamine and trenbolone are legally used in U.S. livestock production to increase muscle growth and improve feed efficiency. While the European Union bans many of these compounds, U.S. regulations permit their controlled use in specific animals (particularly beef cattle), though suggested voluntary withdrawal periods for ractopamine before slaughter help ensure residue levels remain within established limits for safe human consumption. Some athletes have attributed positive anti-doping tests to contaminated meat from the U.S. food supply.

Researchers at the lab led by Elizabeth (Ellie) Ahrens, director of the UCLA Olympic Analytical Laboratory, employed the same analytical methods used in anti-doping efforts—liquid chromatography with high-resolution mass spectrometry—to screen meat samples for anabolic steroids and other growth-promoting agents that are prohibited in sports.

The study, led by Dr. Bradley J. Johnson at Texas Tech University, and in collaboration with the United States Anti-Doping Agency (USADA), found that while some beef samples contained detectable levels of substances like ractopamine, trenbolone, and estradiol, all measurements remained well below the maximum residue limits established by regulatory authorities such as the FDA. Pork and chicken samples showed minimal residues, with the vast majority testing entirely negative for prohibited substances.

"The findings suggest that positive tests resulting from meat consumption are highly unlikely when consumed in amounts consistent with typical daily diets," the researchers concluded in their report. "This study reinforces the effectiveness of current regulatory practices in limiting growth promoter residues in commercial meat.” The project is ongoing to collect more samples, including examining imported meat into the U.S. from abroad.

Article: Surveillance of Anabolic Agent Residues in US Meat Supply by Liquid Chromatography With High-Resolution Tandem Mass Spectrometry; Drug Test Anal. 2025 May 1. doi: 10.1002/dta.3901. Online ahead of print.

 

AMS science preview: Heat stress and height, eclipse effects



Early online research from journals of the American Meteorological Society




American Meteorological Society

Extended "warming stripes" 

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“Figure 2: Warming stripes for the surface and ocean depths (1960-2024), and for different layers of the atmosphere (1979-2024).” Hawkins et al. (2025), Bulletin of the American Meteorological Society. doi: 10.1175/BAMS-D-24-0212.1. Image license: CC BY 4.0

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Credit: Hawkins et al. (2025), Bulletin of the American Meteorological Society. doi: 10.1175/BAMS-D-24-0212.1.






The American Meteorological Society continuously publishes research on climate, weather, and water in its 12 journals. Many of these articles are available for early online access–they are peer-reviewed, but not yet in their final published form. Below are some recent examples.


JOURNAL ARTICLES

Atmospheric and Insect Responses to a Total Solar Eclipse
Bulletin of the American Meteorological Society

Totality alters wind, insect behavior. The University of Alabama’s Flexible Array of Radars and Mesonets (FARM) observed “profound and rapid” changes in the atmosphere and airborne insect behavior during the 2017 U.S. total solar eclipse. The first instrument-based study to record such changes in fine detail before, during, and after totality observed substantial low-level atmospheric changes and a wind shift, and saw airborne insects descend, then reascend. Insect behavior during totality was markedly different from non-totality phases of the eclipse.

Heat Health Height Dependency in an Urban Environment
Journal of Applied Meteorology and Climatology

Children, pets are more exposed to urban heat stress due to their height–especially during the worst heat days. Due to heat radiating from surfaces, wet bulb globe temperature (WBGT, a measure of potential heat stress combining heat and humidity) in paved urban areas is greater at 0.5 m above the ground than at 1.5 m, according to a study of two Charleston, SC, locations. The authors found that “these differences were most pronounced when the health danger was extreme” and warned of “potential health impacts on vulnerable children and pets.”

Urban Heat Island Effects in U.S. Summer Surface Temperature Data, 1895–2023
Journal of Applied Meteorology and Climatology

Urban heat island magnifies climate change impacts at many weather stations. Surface temperature measurements are often taken at urban or suburban locations, which experience magnified warming due to the urban heat island (UHI) effect. This study attempts to quantify the contribution of UHI to summer temperature trends, and suggests that–while the picture is very complicated–increased urbanization over time does have some impact. ”The reporting and significance of suburban and urban temperature statistics (e.g. record high temperatures) should take into account urbanization effects, in addition to large-scale climate change, when those statistics are discussed,” the authors suggest.

Cyclone Warning System in India: A journey of success over 25 years
Weather and Forecasting

Indian cyclone forecasting demonstrates pronounced improvement at saving lives. This study analyzed Tropical Cyclone Biparjoy, which hit the Gujarati coast in 2023, and found it very similar to 1998’s Tropical Cyclone Kandla. While Kandla caused over 1,000 deaths in Gujarat, Biparjoy caused none. The authors attribute this difference in large part to the India Meteorological Department’s improved ability to forecast the cyclone’s genesis, track, intensity, landfall, associated heavy rain, winds, and storm surge with good lead time, and an associated active response from emergency managers.

Warming Stripes Spark Climate Conversations: from the ocean to the stratosphere
Weather and Forecasting

“Warming stripes” extended up and down to oceans and stratosphere. A U.K. and U.S. team has extended the ubiquitous “warming stripes,” illustrating temperature changes in locations across the world, to show how the temperatures humans experience interact with those in the oceans and upper atmosphere.

NOAA/NASA research spotlights

The National Oceanic and Atmospheric Administration (NOAA) is the parent agency of the National Weather Service. NOAA’s research arm, the Office of Oceanic and Atmospheric Research, is threatened with elimination under 2026 budget plans, as is much of the research that takes place at the National Air and Space Administration (NASA). To help reporters understand some of the research that takes place at NOAA and NASA, and with their funding, we are highlighting the additional recent publications below: 

Improving severe weather decision-making in AlaskaWork at the National Weather Service’s Arctic Testbed and Proving Ground in Anchorage has brought together stakeholders to develop a successful prototype of the Winter’s Storm Severity Index (WSSI). A product thus far unavailable in the state, the WSSI shows forecasted impacts of severe winter storms in order to help emergency managers and other stakeholders make decisions.

Improving seasonal/subseasonal forecastsRead about a recent gathering that highlights the applications of NOAA’s seasonal and subseasonal forecasts (collectively known as seasonal forecast systems, or SFSs): weather/climate forecasts for weeks and months in advance). As noted, “The SFSs that are designed to assist in the protection of the U.S. economy and lives are in need of an update since they are based on physical models that are more than a decade old.” The 2024 workshop helped advance NOAA’s work on next-generation forecasts.

Understanding gamma rays and thunderstorms: The internationally collaborative ALOFT airborne campaign in July 2023 discovered that thunderstorms near Florida and Central America produce gamma rays far more frequently than previously thought–enough that the rays can be used to indicate the evolution of thunderstorms. The findings have implications for forecasting and aviation hazards.

Monitoring the air around us: The planetary boundary layer (PBL) is the atmospheric layer adjacent to the Earth's surface–i.e., the layer humans occupy. There is an urgent need for a global PBL observing system to understand its complex structures and interactions with our society and improve climate, weather, and air quality forecasting. This paper outlines the conclusions of a NASA study team working to advance such a system.

You can view all research published in AMS Journals at journals.ametsoc.org.


About the American Meteorological Society

The American Meteorological Society advances the atmospheric and related sciences, technologies, applications, and services for the benefit of society. Founded in 1919, AMS has a membership of around 12,000 professionals, students, and weather enthusiasts. AMS publishes 12 atmospheric and related oceanic and hydrologic science journals; hosts more than 12 conferences annually; and offers numerous programs and services. Visit us at www.ametsoc.org/.

About AMS Journals

The American Meteorological Society continuously publishes research on climate, weather, and water in its 12 journals. Some AMS journals are open access. Media login credentials are available for subscription journals. Journals include the Bulletin of the American Meteorolocial SocietyWeather, Climate, and Society, the Journal of Climate, and Monthly Weather Review.