Featured Post from Georgia Southern University

How much exercise is too much? Georgia Southern researchers study cardiovascular health in ultramarathon runners to better understand impacts of physical activity

Oct 30, 2023

3 min

Is too much of a good thing actually a bad thing?


That’s what researchers in Georgia Southern’s Biodynamics and Human Performance Center aim to find out through a recent study of 75 ultramarathon runners during the 50th anniversary of the Western States 100-mile Endurance Run (WSER) in California.


The study focuses on the benefits of physical activity beyond the typical recommended amount by examining the cardiovascular effects of extreme exercise in the WSER, a 100-mile trail race through the Sierra Nevada mountains that climbs more than 18,000 feet and descends nearly 23,000 feet before runners reach the finish.


Drs. Grosicki and Babcock (University of Colorado, Anschutz Medical Campus) work through the night to collect cardiovascular measures on race finishers.


“We know that exercise is beneficial for health, and national and international public health agencies, such as The American Heart Association, advise that adults get at least 150 minutes of moderate or 75 minutes of vigorous physical activity per week,” said Gregory Grosicki, Ph.D., associate professor in the Waters College of Health Professions Department of Health Sciences and Kinesiology.

“Moreover, there is a dose-response relation between exercise and health, whereby an individual can gain even more health benefits by being active for up to 300 minutes per week,” he continued. “However, it is uncertain whether exercising for greater than 300 minutes will confer any additional health benefits, and importantly, excess exercise may actually detract from cardiovascular health.”


It is important to note, Grosiciki said, that this apparent “partial loss of health benefits” from excess exercise is theoretical for the time being.


“Studies such as ours will help to determine whether this hypothesis is valid, and if so, what can be done about it,” he said.



This is the third year Grosicki and colleagues attended WSER to collect data on some of the world’s most extreme athletes. Previous studies focused on changes in gut health during exercise, which, believe it or not, may actually be linked to changes in cardiovascular health.



Associate Professor Gregory Grosicki, Ph.D., and research colleagues stand at the start line of the Western States Endurance Run.


Grosicki recruited 10 research faculty and students from Auburn University, Florida State University, San Francisco State University and the University of Colorado Anschutz to assist in the data collection.


“We measured blood pressure, arterial stiffness, heart size and function and kidney blood flow, and we collected blood and urine from 75 athletes pre-race, 55 of which completed the race and returned for post-race measures,” stated Grosicki. “This is, without question, the largest and most comprehensive dataset ever to be collected at a single event like this.”


WSER begins in Olympic Valley, California, and ends in Auburn, California, and is considered one of the oldest and most competitive ultramarathons in the United States. Participation is highly selective, and if chosen, athletes have only 30 hours to cover the distance.


The Western States Endurance Run Research Foundation funded this project.



This is exciting research and you are a reporter looking to contact Gregory Grosicki, Ph.D. from the Waters College of Health Professions Department of Health Sciences and Kinesiology - then let us help. Simply contact Georgia Southern's Director of Communications Jennifer Wise at jwise@georgiasouthern.edu to arrange an interview today.

Powered by

You might also like...

Check out some other posts from Georgia Southern University

2 min

Georgia Southern professor to present “Steel and Sweat: Knights, Soldiers and the Making of the Tactical Athlete”

The Georgia Southern University College of Arts and Humanities will host the next installment of the Moveable Feast lecture series with an in-depth discussion of the evolution of combat training from the tumultuous Middle Ages to the modern-day military. Professor of Spanish Grant Gearhart, Ph.D., will present “Steel and Sweat: Knights, Soldiers and the Making of the Tactical Athlete” Feb. 19, at 6 p.m., at Service Brewing in Savannah. Gearhart, who is also the coordinator of experiential learning for the Department of World Languages and Cultures, says the presentation is all about connecting modern military training with the physical contests of centuries past. “I wanted to bring back interest in research on the Middle Ages, considering there is a declining interest in the topic within academia,” Gearhart explained. “To connect the past with present in a way that’s digestible for all audiences is something that I feel passionate about bringing to the public.” His research focuses on the evolution of fighting styles and explores how these styles reflect the ethics and values of the cultures in which they were developed. “Today’s soldiers are more than just military personnel, they are athletes,” said Gearhart. “Being a former college athlete sparked my interest in doing this research on the connections between athletics and warriors. I want to show how our modern ideas of soldiers as tactical athletes have historical grounding in the Middle Ages.” The Moveable Feast series is an immersive learning experience that brings lectures into spaces relevant to their topics. The event is free and open to the public.

3 min

A future in pharmacy, made possible by support and mentorship

A freshman chemistry major from Hinesville, Georgia, Geovanii Pacheco already has his sights set on a career in pharmacy. His ambition is rooted not just in a love for science, but in personal experience. Growing up, his family spent countless hours navigating prescriptions and insurance coverage for his older brother, Devin, who has autism. During those moments, one pharmacist consistently stood out. This was someone who advocated for his family, helped them through paperwork and made sure Devin got the medication he needed. “It really resonated with me,” Pacheco said. “As a pharmacist, I’d like to embody what she did for us, for others as well.” That goal brought Pacheco to Georgia Southern University where he is now supported by the National Science Foundation’s S-STEM Scholarship Program Award. This is a nearly $2 million grant designed to support Pell-eligible students pursuing degrees in biochemistry, biology, chemistry, geosciences, mathematics, physics or sustainability science. For Pacheco, the program has been nothing short of life-changing. “I can say that I’m not going to college with any financial stress,” he said. “I have no money coming out-of-pocket.” Administered through Georgia Southern’s College of Science and Mathematics, the federally funded program provides last-dollar scholarships that cover remaining costs after Pell Grants and other aid are applied. In addition to financial support, the program pairs students with dedicated faculty mentors and offers structured programming aimed at retention, professional development and long-term success. Sara Gremillion, Ph.D., professor of biology and principal investigator on the grant, said the goal is to ensure that students don’t just enroll in college, but that they also thrive once they arrive. “They may not have a strong expectation about what to expect in college,” said Gremillion. “This program not only removes financial barriers, but it also surrounds students with the support they need to navigate college and plan for their future.” Pacheco has felt that impact from day one. Thanks to the program, he moved into his residence hall a week early to attend a one-week Basebamp program to jump start his college experience. There, he met fellow scholarship recipients and connected with his faculty mentor before classes even began. His mentor, Shainaz Landge, Ph.D., associate professor of chemistry, has helped connect Pacheco with opportunities from joining the Student Affiliates of the American Chemical Society to learning about upcoming pre-pharmacy organizations and undergraduate research. “Students such as Geovanii serve as prime examples of the fulfillment derived from mentorship and teaching,” said Landge. “Their growth and engagement highlight the critical role that effective mentorship plays in fostering both academic development.” That blend of mentorship and financial support is exactly what the grant was designed to provide. Over five years, the program will serve dozens of students in eligible majors such as chemistry, biology, biomedical science, biochemistry, physics, mathematics, sustainability science and geoscience. Each student receives individualized scholarship support, up to $15,000 per year, based on need, along with a faculty mentor who stays with them throughout their undergraduate journey. For Pacheco and his family, the scholarship brought immediate relief. He vividly remembers opening the acceptance email with his mother and scrolling down to see the financial aid details. “She was tickled, let me tell you,” he said. “It lifted so much stress off her shoulders. It was life-changing.” Applications to be part of the next cohort of COSM S-STEM Scholars are open until Feb. 1, 2026. Eligibility requirements, necessary documentation and other information can be found at this webpage. Looking to know more about Georgia Southern University or the National Science Foundation’s S-STEM Scholarship Program Award? Simply contact Georgia Southern's Director of Communications Jennifer Wise at jwise@georgiasouthern.edu to arrange an interview today.

2 min

Georgia Southern professor re-elected to board of world’s largest scientific society

Professor of chemistry and chair of the Department of Biochemistry, Chemistry and Physics Will Lynch, Ph.D., has been re-elected to the American Chemical Society’s (ACS) board of directors. This marks his second three-year term on the board. With ACS serving as the largest science organization in the world, Lynch says the society’s work impacts lives every day. “We support the scientific enterprise by advocating for everything from research funding to laboratory safety,” said Lynch. “That work strengthens scientific integrity that ACS champions and ultimately shows up in the things that people rely on daily. Bottled water, medicines, cellphones and computer screens all come from chemistry. Many people do not realize how deeply science shapes their world.” With a budget of nearly $900 million and a global community of over 200,000, planning is essential to the success of ACS. Lynch is proud to have chaired the committee that created the society’s next five-year strategic plan. He hopes that his work will continue to put the society’s vast resources to use helping advocate for scientists around the world. “My focus now is implementing ACS’ strategic plan, which envisions a world built on science and setting up the indicators to measure our success,” said Lynch. “We want to make sure we support chemists whether they are in academia, industry, government labs or retired.” Serving in a leadership role for a world-renowned scientific organization is part of Lynch’s calling to help others. He began his service with ACS over 40 years ago when he volunteered at a regional meeting while pursuing his bachelor’s degree. He started making connections immediately and grew his professional network from the local to the national level. Forming friendships in the scientific community and witnessing the ways their work changed lives inspired Lynch to continue to grow his own knowledge so he could do more for others. “Getting to do research as an undergraduate pulled me in, and I knew that chemistry was where I could make a difference. I realized I had a path to help society through science and I never looked back.” Looking to know more about Georgia Southern University or connect with Will Lynch? Simply contact Georgia Southern's Director of Communications Jennifer Wise at jwise@georgiasouthern.edu to arrange an interview today.

View all posts
Powered by