Usain Bolt, the fastest-ever human, appears to have an extra gear that propels him ahead of other sprinters. But that’s not what’s going on.
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To book a live or taped interview with Peter Weyand in the SMU News Broadcast Studio call SMU News and Communications, at 214-768-7654, or email news@smu.edu.
Science writer Matthew Futterman tapped the expertise of SMU biomechanics expert Peter Weyand for an article about the world’s fastest-ever human, Usain Bolt.
Reporting in The Wall Street Journal, Futterman quotes Weyand for his expertise on the mechanics of Usain Bolt’s unusual speed. The article “The Science Behind Sprinter Usain Bolt’s Speed,” published July 28, 2016.
Weyand, director of the SMU Locomotor Performance Laboratory, is one of the world’s leading scholars on the scientific basis of human performance. His research on runners, specifically world-class sprinters, looks at the importance of ground forces for running speed, and has established a contemporary understanding that spans the scientific and athletic communities.
In particular, Weyand’s finding that speed athletes are not able to reposition their legs more rapidly than non-athletes debunked a widespread belief. Rather, Weyand and his colleagues have demonstrated sprinting performance is largely set by the force with which one presses against the ground and how long one applies that force.
By Matthew Futterman
The Wall Street Journal
Sprinters who have taken on Usain Bolt in the 100-meter dash often describe a moment in the second half of the race when the world’s fastest-ever human just runs away from them.
One minute they are shoulder-to-shoulder with Bolt, believing that this will be the night the legend will be toppled. The next they are staring at his back, watching him raise his hands in triumph, sometimes many meters before he crosses the finish line.
Last week Bolt expressed his usual, unflappable confidence, even though a hamstring injury kept him from Jamaica’s track and field trials. Granted a medical exemption by the country’s athletics federation, he was named to the team even though he couldn’t qualify at the national trials.
“My chances are always the same: Great!” he said. “If everything goes smoothly the rest of the time and the training goes well, I’m going to be really confident going to the championship.” …
…However, a 2012 study by Matthew Bundle of the University of Montana in Missoula and Peter Weyand at Southern Methodist University in Dallas, showed that the greatest decrease in muscular performance occurs within the first seconds of a sprint when runners are still accelerating, which would suggest that deceleration in a race as short as 100 meters may not be related to how sprinters metabolize glycogen.
“Muscle fatigue happens contraction by contraction,” Weyand said. He argues that the biological process that causes the fatigue is still a mystery. It also is very hard to measure, because it is difficult to examine what is happening to an incredibly fast person’s muscles when he can only run at full speed for roughly three seconds.
Still, the idea that muscle fatigue begins instantaneously and with each muscle contraction may say plenty about why Bolt is so hard to beat.
SMU is a nationally ranked private university in Dallas founded 100 years ago. Today, SMU enrolls nearly 11,000 students who benefit from the academic opportunities and international reach of seven degree-granting schools. For more information, www.smu.edu.
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“Weyand has conducted what many researchers consider to be some of the best science to date on the biomechanics of sprinting and how these elite athletes achieve their record-breaking speeds.” — Scientific American
The work of SMU biomechanics researcher Peter G. Weyand is featured in the August 2016 issue of the science news magazine Scientific American.
Weyand, director of the SMU Locomotor Performance Laboratory, is one of the world’s leading scholars on the scientific basis of human performance. His research on runners, specifically world-class sprinters, looks at the importance of ground forces for running speed, and has established a contemporary understanding that spans the scientific and athletic communities.
For more information
To book a live or taped interview with Peter Weyand in the SMU News Broadcast Studio call SMU News and Communications, at 214-768-7654, or email news@smu.edu.
In particular, Weyand’s finding that speed athletes are not able to reposition their legs more rapidly than non-athletes debunked a widespread belief. Rather, Weyand and his colleagues have demonstrated sprinting performance is largely set by the force with which one presses against the ground and how long one applies that force.
By Dina Fine Marone
Scientific American
… Before (Weyand’s) investigations, the prevailing wisdom about great sprinters was that they are particularly adept at quickly repositioning their limbs for their next step while their feet are in the air … Weyand was the first to test this idea scientifically — and his findings indicate that it is wrong …
… In subsequent work, Weyand further determined that at top speeds the best runners landed with a peak force up to five times their body weight, compared with 3.5 times among the average runner … Recently Weyand’s team additionally figured out how the best sprinters are able to generate those higher forces — and in so doing forced a revision of another central tenet of the running world.
SMU is a nationally ranked private university in Dallas founded 100 years ago. Today, SMU enrolls nearly 11,000 students who benefit from the academic opportunities and international reach of seven degree-granting schools. For more information, www.smu.edu.
SMU has an uplink facility located on campus for live TV, radio, or online interviews. To speak with an SMU expert or book an SMU guest in the studio, call SMU News & Communications at 214-768-7650.
SMU scientists and their research have a global reach that is frequently noted, beyond peer publications and media mentions.
By Margaret Allen
SMU News & Communications
It was a good year for SMU faculty and student research efforts. Here is a small sampling of public and published acknowledgements during 2015:
Hot topic merits open access
Taylor & Francis, publisher of the online journal Environmental Education Research, lifted its subscription-only requirement to meet demand for an article on how climate change is taught to middle-schoolers in California.
Co-author of the research was Diego Román, assistant professor in the Department of Teaching and Learning, Annette Caldwell Simmons School of Education and Human Development.
Román’s research revealed that California textbooks are teaching sixth graders that climate change is a controversial debate stemming from differing opinions, rather than a scientific conclusion based on rigorous scientific evidence.
Research makes the cover of Biochemistry
Drugs important in the battle against cancer were tested in a virtual lab by SMU biology professors to see how they would behave in the human cell.
A computer-generated composite image of the simulation made the Dec. 15 cover of the journal Biochemistry.
Scientific articles about discoveries from the simulation were also published in the peer review journals Biochemistry and in Pharmacology Research & Perspectives.
The researchers tested the drugs by simulating their interaction in a computer-generated model of one of the cell’s key molecular pumps — the protein P-glycoprotein, or P-gp. Outcomes of interest were then tested in the Wise-Vogel wet lab.
The ongoing research is the work of biochemists John Wise, associate professor, and Pia Vogel, professor and director of the SMU Center for Drug Discovery, Design and Delivery in Dedman College. Assisting them were a team of SMU graduate and undergraduate students.
The researchers developed the model to overcome the problem of relying on traditional static images for the structure of P-gp. The simulation makes it possible for researchers to dock nearly any drug in the protein and see how it behaves, then test those of interest in an actual lab.
To date, the researchers have run millions of compounds through the pump and have discovered some that are promising for development into pharmaceutical drugs to battle cancer.
Strong interest in research on sexual victimization
Teen girls were less likely to report being sexually victimized after learning to assertively resist unwanted sexual overtures and after practicing resistance in a realistic virtual environment, according to three professors from the SMU Department of Psychology.
The finding was reported in Behavior Therapy. The article was one of the psychology journal’s most heavily shared and mentioned articles across social media, blogs and news outlets during 2015, the publisher announced.
The study was the work of Dedman College faculty Lorelei Simpson Rowe, associate professor and Psychology Department graduate program co-director; Ernest Jouriles, professor; and Renee McDonald, SMU associate dean for research and academic affairs.
Consumers assume bigger price equals better quality
Even when competing firms can credibly disclose the positive attributes of their products to buyers, they may not do so.
Instead, they find it more lucrative to “signal” quality through the prices they charge, typically working on the assumption that shoppers think a high price indicates high quality. The resulting high prices hurt buyers, and may create a case for mandatory disclosure of quality through public policy.
That was a finding of the research of Dedman College’s Santanu Roy, professor, Department of Economics. Roy’s article about the research was published in February in one of the blue-ribbon journals, and the oldest, in the field, The Economic Journal.
Published by the U.K.’s Royal Economic Society, The Economic Journal is one of the founding journals of modern economics. The journal issued a media briefing about the paper, “Competition, Disclosure and Signaling,” typically reserved for academic papers of broad public interest.
Chemistry research group edits special issue
Chemistry professors Dieter Cremer and Elfi Kraka, who lead SMU’s Computational and Theoretical Chemistry Group, were guest editors of a special issue of the prestigious Journal of Physical Chemistry. The issue published in March.
The Computational and Theoretical research group, called CATCO for short, is a union of computational and theoretical chemistry scientists at SMU. Their focus is research in computational chemistry, educating and training graduate and undergraduate students, disseminating and explaining results of their research to the broader public, and programming computers for the calculation of molecules and molecular aggregates.
The special issue of Physical Chemistry included 40 contributions from participants of a four-day conference in Dallas in March 2014 that was hosted by CATCO. The 25th Austin Symposium drew 108 participants from 22 different countries who, combined, presented eight plenary talks, 60 lectures and about 40 posters.
CATCO presented its research with contributions from Cremer and Kraka, as well as Marek Freindorf, research assistant professor; Wenli Zou, visiting professor; Robert Kalescky, post-doctoral fellow; and graduate students Alan Humason, Thomas Sexton, Dani Setlawan and Vytor Oliveira.
There have been more than 75 graduate students and research associates working in the CATCO group, which originally was formed at the University of Cologne, Germany, before moving to SMU in 2009.
Vertebrate paleontology recognized with proclamation
Dallas Mayor Mike Rawlings proclaimed Oct. 11-17, 2015 Vertebrate Paleontology week in Dallas on behalf of the Dallas City Council.
The proclamation honored the 75th Annual Meeting of the Society of Vertebrate Paleontology, which was jointly hosted by SMU’s Roy M. Huffington Department of Earth Sciences in Dedman College and the Perot Museum of Science and Nature. The conference drew to Dallas some 1,200 scientists from around the world.
Making research presentations or presenting research posters were: faculty members Bonnie Jacobs, Louis Jacobs, Michael Polcyn, Neil Tabor and Dale Winkler; adjunct research assistant professor Alisa Winkler; research staff member Kurt Ferguson; post-doctoral researchers T. Scott Myers and Lauren Michael; and graduate students Matthew Clemens, John Graf, Gary Johnson and Kate Andrzejewski.
The host committee co-chairs were Anthony Fiorillo, adjunct research professor; and Louis Jacobs, professor. Committee members included Polcyn; Christopher Strganac, graduate student; Diana Vineyard, research associate; and research professor Dale Winkler.
KERA radio reporter Kat Chow filed a report from the conference, explaining to listeners the science of vertebrate paleontology, which exposes the past, present and future of life on earth by studying fossils of animals that had backbones.
SMU earthquake scientists rock scientific journal
Findings by the SMU earthquake team reverberated across the nation with publication of their scientific article in the prestigious British interdisciplinary journal Nature, ranked as one of the world’s most cited scientific journals.
The article reported that the SMU-led seismology team found that high volumes of wastewater injection combined with saltwater extraction from natural gas wells is the most likely cause of unusually frequent earthquakes occurring in the Dallas-Fort Worth area near the small community of Azle.
The research was the work of Dedman College faculty Matthew Hornbach, associate professor of geophysics; Heather DeShon, associate professor of geophysics; Brian Stump, SMU Albritton Chair in Earth Sciences; Chris Hayward, research staff and director geophysics research program; and Beatrice Magnani, associate professor of geophysics.
The article, “Causal factors for seismicity near Azle, Texas,” published online in late April. Already the article has been downloaded nearly 6,000 times, and heavily shared on both social and conventional media. The article has achieved a ranking of 270, which puts it in the 99th percentile of 144,972 tracked articles of a similar age in all journals, and 98th percentile of 626 tracked articles of a similar age in Nature.
“It has a very high impact factor for an article of its age,” said Robert Gregory, professor and chair, SMU Earth Sciences Department.
The scientific article also was entered into the record for public hearings both at the Texas Railroad Commission and the Texas House Subcommittee on Seismic Activity.
Researchers settle long-debated heritage question of “The Ancient One”
The research of Dedman College anthropologist and Henderson-Morrison Professor of Prehistory David Meltzer played a role in settling the long-debated and highly controversial heritage of “Kennewick Man.”
Also known as “The Ancient One,” the 8,400-year-old male skeleton discovered in Washington state has been the subject of debate for nearly two decades. Argument over his ancestry has gained him notoriety in high-profile newspaper and magazine articles, as well as making him the subject of intense scholarly study.
Officially the jurisdiction of the U.S. Army Corps of Engineers, Kennewick Man was discovered in 1996 and radiocarbon dated to 8500 years ago.
Because of his cranial shape and size he was declared not Native American but instead ‘Caucasoid,’ implying a very different population had once been in the Americas, one that was unrelated to contemporary Native Americans.
But Native Americans long have claimed Kennewick Man as theirs and had asked for repatriation of his remains for burial according to their customs.
Meltzer, collaborating with his geneticist colleague Eske Willerslev and his team at the Centre for GeoGenetics at the University of Copenhagen, in June reported the results of their analysis of the DNA of Kennewick in the prestigious British journal Nature in the scientific paper “The ancestry and affiliations of Kennewick Man.”
The results were announced at a news conference, settling the question based on first-ever DNA evidence: Kennewick Man is Native American.
The announcement garnered national and international media attention, and propelled a new push to return the skeleton to a coalition of Columbia Basin tribes. Sen. Patty Murray (D-WA) introduced the Bring the Ancient One Home Act of 2015 and Washington Gov. Jay Inslee has offered state assistance for returning the remains to Native Tribes.
Science named the Kennewick work one of its nine runners-up in the highly esteemed magazine’s annual “Breakthrough of the Year” competition.
The research article has been viewed more than 60,000 times. It has achieved a ranking of 665, which puts it in the 99th percentile of 169,466 tracked articles of a similar age in all journals, and in the 94th percentile of 958 tracked articles of a similar age in Nature.
In “Kennewick Man: coming to closure,” an article in the December issue of Antiquity, a journal of Cambridge University Press, Meltzer noted that the DNA merely confirmed what the tribes had known all along: “We are him, he is us,” said one tribal spokesman. Meltzer concludes: “We presented the DNA evidence. The tribal members gave it meaning.”
Prehistoric vacuum cleaner captures singular award
Science writer Laura Geggel with Live Science named a new species of extinct marine mammal identified by two SMU paleontologists among “The 10 Strangest Animal Discoveries of 2015.”
The new species, dubbed a prehistoric hoover by London’s Daily Mail online news site, was identified by SMU paleontologist Louis L. Jacobs, a professor in the Roy M. Huffington Department of Earth Sciences, Dedman College of Humanities and Sciences, and paleontologist and SMU adjunct research professor Anthony Fiorillo, vice president of research and collections and chief curator at the Perot Museum of Nature and Science.
Jacobs and Fiorillo co-authored a study about the identification of new fossils from the oddball creature Desmostylia, discovered in the same waters where the popular “Deadliest Catch” TV show is filmed. The hippo-like creature ate like a vacuum cleaner and is a new genus and species of the only order of marine mammals ever to go extinct — surviving a mere 23 million years.
Desmostylians, every single species combined, lived in an interval between 33 million and 10 million years ago. Their strange columnar teeth and odd style of eating don’t occur in any other animal, Jacobs said.
As noted by the CERN Courier — the news magazine of the CERN Laboratory in Geneva, which hosts the Large Hadron Collider, the world’s largest science experiment — more than 250 scientists from 30 countries presented more than 200 talks on a multitude of subjects relevant to experimental and theoretical research. SMU physicists presented at the conference.
The SMU organizing committee was led by Fred Olness, professor and chair of the SMU Department of Physics in Dedman College, who also gave opening and closing remarks at the conference. The committee consisted of other SMU faculty, including Jodi Cooley, associate professor; Simon Dalley, senior lecturer; Robert Kehoe, professor; Pavel Nadolsky, associate professor, who also presented progress on experiments at CERN’s Large Hadron Collider; Randy Scalise, senior lecturer; and Stephen Sekula, associate professor.
Sekula also organized a series of short talks for the public about physics and the big questions that face us as we try to understand our universe.
Technology helpful in motivating young struggling readers, particularly boys, to read — Dara Rossi
SMU’s Dara Rossi was interviewed by the summer reading program Shelly’s Summer Bookworms for Dallas TV station WFAA.
Rossi is a clinical assistant professor and director of SMU’s Teach for American Teacher Education Program in the Simmons School of Education and Human Development. She was asked how using technology can help young students learn to read.
Rossi is an experienced educator with a strong science background, including K-12 curriculum development and administration.
To book a live or taped interview with Dr. Michael McLendon in the SMU News Broadcast Studio call SMU News at 214-768-7650 or email SMU News at news@smu.edu.
McLendon examined the role and performance of UT Austin and Texas A&M compared to their national peers in the report released by the Coalition on Dec. 6. The report provides a baseline look at the state’s flagship public universities. McLendon was commissioned to do the study while at Vanderbilt University. Now at Simmons, he’s a faculty member in the Department of Education Policy and Leadership and serves as the school’s associate dean.
By Reeve Hamilton
The Texas Tribune
A group that formed in 2011 in response to a prominent push for higher education policy proposals it viewed as misguided released a report on Thursday that makes a case for the value of the state’s flagship universities: the University of Texas at Austin and Texas A&M University.
The Texas Coalition for Excellence in Higher Education report was written by Michael McLendon, a professor of higher education policy and leadership at Southern Methodist University. He previously worked at Vanderbilt University, where he completed much of the work on the report.
Jenifer Sarver, a spokeswoman for the coalition, said the group commissioned the report because it wanted a substantive, data-driven conversation about the value of the state’s top-tier public research universities. She said that among the universities’ supporters, as the statewide debate on reforming higher education has continued, there has been “a real desire to not just raise a fist and criticize others who are raising important questions.”
In the report, McLendon used national data to compare institutions and found that the two flagship universities are a bargain relative to their peers — UT charges about $1,000 less than the average tuition and fees in the peer group, while A&M charges roughly $2,000 less. He also found that they are both “among the nation’s foremost leaders in the number of bachelor’s degrees awarded nationally.”
Overall, he said in a statement, “they perform at high levels when compared to their national peers on many of the dimensions of importance to students, to the public, and to the state of Texas.”
The chief areas in which McLendon found the Texas flagships lagging were four-year graduation rates, which hover around 50 percent at both universities, and African-American student enrollment.
SMU is a nationally ranked private university in Dallas founded 100 years ago. Today, SMU enrolls nearly 11,000 students who benefit from the academic opportunities and international reach of seven degree-granting schools. For more information, www.smu.edu.
SMU has an uplink facility located on campus for live TV, radio, or online interviews. To speak with an SMU expert or book an SMU guest in the studio, call SMU News & Communications at 214-768-7650.