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New study by Appalachian Human Performance Laboratory finds banana compounds act as COX-2 inhibitor

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Dr. David Nieman, director of Appalachian State University’s Human Performance Laboratory on the North Carolina Research Campus and professor of health and exercise science at Appalachian. Photo submitted

“ … banana metabolites that increase in the blood following ingestion have a similar effect to aspirin or ibuprofen that inhibits COX-2 activity. This makes bananas close to the perfect athletic food.”

Dr. David Nieman, director of Appalachian’s Human Performance Laboratory on the North Carolina Research Campus

By Jennifer Woodward
Posted March 27, 2018 at 2:43 p.m.

BOONE, N.C. — What do banana metabolites and ibuprofen have in common? In a new study completed by Appalachian State University’s Human Performance Laboratory and published March 22 in the scientific journal PLOS ONE, both were found to inhibit COX-2 mRNA expression.

The study, “Metabolic recovery from heavy exertion following banana compared to sugar beverage or water only ingestion: A randomized, crossover trial,” contrasted banana ingestion during exercise to water alone or a six percent sugar beverage, which is similar to a sports drink.

View larger image

Dr. David Nieman, director of Appalachian State University’s Human Performance Laboratory on the North Carolina Research Campus and professor of health and exercise science at Appalachian. Photo submitted

“ … banana metabolites that increase in the blood following ingestion have a similar effect to aspirin or ibuprofen that inhibits COX-2 activity. This makes bananas close to the perfect athletic food.”

Dr. David Nieman, director of Appalachian’s Human Performance Laboratory on the North Carolina Research Campus

The study showed that banana carbohydrates work equally to a sports drink to fuel athletes and help them with recovery. New metabolic findings revealed that banana metabolites potentially mimic how ibuprofen works to reduce pain and swelling, and how they help the immune system function effectively during a metabolically stressful time such as intense exercise.

“Ibuprofen is the number one drug taken by athletes to combat inflammation,” said study author Dr. David Nieman, director of the Appalachian State University’s Human Performance Laboratory on the North Carolina Research Campus (NCRC) and professor of health and exercise science in the Beaver College of Health Sciences.

“Research shows that it can cause intestinal cell damage and, in some studies, was found to increase inflammation in athletes. Now, athletes know there is a natural alternative — bananas and water.”

About the study

Twenty male and female cyclists completed four 75-km time trials after an overnight fast ingesting Cavendish and mini yellow bananas that have similar carbohydrate but different phenolic content. They also ingested a six percent sugar beverage and water only. Each cyclist had a two-week washout period between cycling trials.

Study findings

There were two key results found after the Cavendish or mini yellow bananas were ingested. First, there was a significant increase in at least 18 banana-derived metabolites, including serotonin and dopamine byproducts. The appearance of the metabolites coincided with a reduction in COX-2 mRNA expression, which normally increases with exercise. A reduction in COX-2 mRNA expression usually results in less inflammation and reduced swelling and the perception of pain.

Secondly, the presence of banana antioxidants kept immune cells operating optimally, preventing them from switching to less efficient energy production methods. Intense exercise often depresses immune function due to physiological stress.

The study did confirm that carbohydrate ingestion, whether from the bananas or a six percent sugar beverage, supported endurance performance by fueling athletes effectively while contributing to a faster recovery by reducing markers of post-exercise inflammation.

“Consuming bananas with water during exercise has several advantages for athletes and fitness enthusiasts,” Neiman commented, “above those linked to regular sports drinks, including a stronger anti-inflammatory effect, better nutrition and improved metabolic recovery. Within an exercise context, banana metabolites that increase in the blood following ingestion have a similar effect to aspirin or ibuprofen that inhibits COX-2 activity. This makes bananas close to the perfect athletic food.”

Study co-authors include scientists from the Dole Nutrition Institute, North Carolina State Plants for Human Health Institute and University of North Carolina at Charlotte Bioinformatics Services Division, all of which are located on the NCRC.

Metabolic recovery from heavy exertion following banana compared to sugar beverage or water only ingestion: A randomized, crossover trial
Metabolic recovery from heavy exertion following banana compared to sugar beverage or water only ingestion: A randomized, crossover trial

David C. Nieman, Nicholas D. Gillitt, Wei Sha, Debora Esposito, Sivapriya Ramamoorthy

PLOS ONE

Carbohydrate (CHO) ingestion from bananas or a sugar beverage had a comparable influence in attenuating metabolic perturbation and inflammation following 75-km cycling. Ex-vivo analysis with THP-1 monocytes supported a decrease in COX-2 mRNA expression and reduced reliance on glycolysis for ATP production following ingestion of bananas but not sugar water when compared to water alone.

Read the study
Top Fitness Findings and Practical Tips from Dr. David Nieman
Top Fitness Findings and Practical Tips from Dr. David Nieman
North Carolina Research Campus

Fitness is not about spending a lot of time and money on a gym membership. It’s a lifestyle, made up of nutritious food choices and regular exercise.

Learn more
Bananas vs. Sports Drinks? Bananas Win in Study
Bananas vs. Sports Drinks? Bananas Win in Study
The New York Times
April 4, 2018

A banana might reasonably replace sports drinks for those of us who rely on carbohydrates to fuel exercise and speed recovery, according to a new study comparing the cellular effects of carbohydrates consumed during sports.

Read the story
App State Study Claims Bananas Could Be The Perfect Post-Workout Food
App State Study Claims Bananas Could Be The Perfect Post-Workout Food
88.5 WFDD
March 30, 2018

New research out of Appalachian State University shows that the humble banana may have some hidden benefits. The study suggests that a combination of water and a banana is not only as effective as sports drinks for exercise recovery, but quite likely more effective.

Read the story
What to Eat After a Workout: Bananas Are Just as Effective as Sugary Sports Drinks
What to Eat After a Workout: Bananas Are Just as Effective as Sugary Sports Drinks

A study found that bananas were just as good at replacing nutrients and preventing post-workout inflammation.

Men's Health
March 23, 2018

Skip the Gatorade and pain pills. A banana may offer your body all it needs to perform and bounce back after a punishing workout, according to a new study published in PLOS One. David Nieman, Dr.P.H., first author of the study and director of Appalachian State University’s Human Performance Lab on the North Carolina Research Campus says his current study found some banana metabolites "knock down" a gene that promotes pain and inflammation after exercise.

Read the story

About the North Carolina Research Campus

The North Carolina Research Campus, located outside of Charlotte in Kannapolis, is a scientific community that collaboratively works to empower human health through nutrition. Eight universities, the David H. Murdock Research Institute, global companies and entrepreneurs focus research and development on safer, more nutritious crops, healthier foods and precision nutrition. Learn more at https://transforming-science.com.

About the Beaver College of Health Sciences

Appalachian State University’s Beaver College of Health Sciences (BCHS), opened in 2010, is transforming the health and quality of life for the communities it serves through interprofessional collaboration and innovation in teaching, scholarship, service and clinical outreach. The college enrolls more than 3,600 students and offers 10 undergraduate degree programs, nine graduate degree programs and four certificates across six departments: Nursing, Nutrition and Health Care Management, Public Health and Exercise Science, Recreation Management and Physical Education, Rehabilitation Sciences, and Social Work. The college’s academic programs are located in the Holmes Convocation Center on App State’s main campus and the Levine Hall of Health Sciences, a state-of-the-art, 203,000-square-foot facility that is the cornerstone of Boone’s Wellness District. In addition, the college supports the Appalachian Institute for Health and Wellness and has collaborative partnerships with the Wake Forest University School of Medicine’s Physician Assistant Program, UNC Health Appalachian and numerous other health agencies. Learn more at https://healthsciences.appstate.edu.

About Appalachian State University

As a premier public institution, Appalachian State University prepares students to lead purposeful lives. App State is one of 17 campuses in the University of North Carolina System, with a national reputation for innovative teaching and opening access to a high-quality, affordable education for all. The university enrolls more than 21,000 students, has a low student-to-faculty ratio and offers more than 150 undergraduate and 80 graduate majors at its Boone and Hickory campuses and through App State Online. Learn more at https://www.appstate.edu.

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