Meet the Team
Our talented, interdisciplinary team of physicians, scientists, dietitians, and allied health/research professionals lend their broad and unique insight as subject matter experts and key opinion leaders from both academia and industry in every major facet of the business value chain.
CEO
Tim Ziegenfuss Ph.D, FISSN, CSCS
An internationally recognized author, speaker, and researcher with expertise in exercise science, dietary supplements, nutrition, and sports performance, Dr. Tim Ziegenfuss is the Co-Founder and Chief Scientific Officer of the Center for Applied Health Sciences. He is a past President (2009-2011) and Fellow of the International Society of Sports Nutrition, and Certified Strength and Conditioning Specialist. Dr. Ziegenfuss earned a Bachelor of Science from Lock Haven University (Magna Cum Laude, Health Sciences), a Master of Science from Purdue University (Exercise Physiology), and a Doctorate from Kent State University (Exercise Physiology, cognates in Nutrition and Statistics). During his five-year tenure as a professor, he taught undergraduate and graduate level courses in exercise physiology, metabolism, body composition, anatomy, physiology, pathophysiology, and sports nutrition. In addition to publishing over 80 scientific papers, 8 book chapters, and more than 600 articles in mainstream magazines, Dr. Ziegenfuss has been quoted in Scientific American and made presentations in Washington DC on behalf of the dietary supplement industry. Because of his unique ability to connect the dots between dietary supplements, nutritional habits, and physical activity within academic, industry, and legal channels, Tim is routinely sought after by top 25 print media and as a consultant to top supplement companies, raw material manufacturers, elite athletes, and high-level executives. Dr. Ziegenfuss is also a renowned scientific advisor to the U.S. Sports Nutrition market. His input has led to the creation of products that currently grace the shelves of every major retailer in a dozen countries around the world, accounting for millions of dollars in revenues.
COO
Jennifer Sandrock MS, RD/LD, CCRC
A Licensed and Registered Dietitian and a Certified Clinical Research Coordinator, Jennifer Sandrock is the Chief Operating Officer at the Center for Applied Health Sciences. As a Certified Sports Nutritionist, her research interests focus primarily on sports performance, weight loss, and cardiovascular disease prevention. She also consults for local fitness facilities and teaches disease and lifestyle management courses as well as instructing healthy cooking classes for personal clients. Jennifer’s enthusiasm and passion for cooking has led her to become actively involved with local Ronald McDonald House charities.
Jennifer received her Bachelor of Science (Health Sciences) degree from Lock Haven University, and a Bachelor of Science and Master of Science (Nutrition and Dietetics) from D’Youville College. She is an active member of the International Society of Sports Nutrition and the Academy of Nutrition and Dietetics.
Director of Clinical Research
Michael La Monica Ph.D, CSCS*D
Michael La Monica received his bachelor’s degree from Rutgers University and his master’s degree and doctorate from the University of Central Florida. Michael has worked as an Exercise Physiologist for a hospital where he interacted with special populations (diabetes, bariatric, cancer, osteoporosis, and cardiovascular rehabilitation), individuals undergoing rehabilitation, and athletes (youth to professional). He later taught a variety of undergraduate and graduate courses within Kinesiology at the University of Central Florida and Missouri State University. He has published multiple peer-reviewed research articles within sports science, exercise physiology, and nutritional supplementation. Additionally, Michael regularly attends and presents research at national conferences including the American College of Sports Medicine, Experimental Biology, the National Strength and Conditioning Association, and the International Society of Sports Nutrition.
Research Associate
Ethan Ziegenfuss BS, MBA
Ethan Ziegenfuss holds a Bachelor’s degree in Exercise Science from Mercyhurst University, where he was also a dedicated member of the football team. Currently, Ethan is on track to complete his MBA by June, further expanding his expertise in business and strategic management. Ethan's passion for clinical research began during his internship with the Center for Applied Health Sciences in 2018, where he gained invaluable experience and discovered his interest in advancing health sciences. With a strong foundation in digital marketing, communication, and time management, Ethan brings a versatile skill set to the team. His unique combination of academic knowledge, research experience, and strategic skills positions him to contribute effectively to advancing innovative studies and supporting our clients in achieving their goals.
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Research Nurse
Brady Berlin RN
Brady Berlin is a compassionate and experienced registered nurse with a diverse background in healthcare. He earned bachelor's degrees in both Exercise Science and Nursing from Kent State University. With a strong foundation in exercise physiology, Brady began his career as an intern at the Center for Applied Health Sciences (CAHS) and later became an ACSM certified exercise physiologist prior to becoming an RN. As an RN, Brady has gained invaluable experience in hospital settings, working in oncology, hematology, and hospice care, where he provided high-quality care to patients during critical times. His approach combines clinical expertise with compassion for those in need. In addition to his nursing roles, Brady has worked in the developmental disabilities field, offering consulting and educational services to improve care and outcomes for individuals with developmental disabilities. Brady enjoys combining his knowledge and experiences from his nursing and exercise science background at CAHS to provide high quality research as well has high quality care for all research subjects.
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Research Nurse
Shelley Hartshorn RN
Shelley Hartshorn is a dedicated and highly experienced nurse with a strong background in critical care. She earned her nursing degree from Stark State College, graduating at the top of her class. With a background as an ICU/PCU nurse and Clinical Nurse Leader at Aultman Hospital, Shelley has developed a strong foundation in patient care and leadership. Currently, she brings her expertise to clinical research at CAHS where she excels in organizing lab orders, analyzing blood results, and overseeing the day-to-day operations of data collection, documentation, data entry, and subject recruitment. Shelley’s years of experience and compassion ensure the utmost care and attention for all test subjects under her supervision.
Research Associate
Jodi Grdic BS
Jodi Grdic is a dedicated professional with a background in sports medicine and nutrition. Jodi studied sports medicine at Akron University, and went on to earn a bachelors degree in nutrition from Youngstown State University. Jodi currently serves as a research assistant at CAHS, where she plays a vital role in the day-to-day operations of data collection, documentation, data entry, and subject recruitment. With several years of experience as a nutrition counselor for the Women, Infants and Children(WIC) Program, Jodi brings a wealth of knowledge and expertise to her current role. She is passionate about promoting health and wellness, and is committed to making a positive impact in the field of clinical research.
Research Associate
Ashley Gustat NCPT, CMA
Ashley holds certifications in phlebotomy and medical assisting.
She has AAMA-accredited training in clinical and laboratory procedures as well as professional medical administrative skills. Her experience includes high- risk pregnancy, geriatrics, dentistry, hematology and oncology. Ashley plays a key role in ensuring the comfort and safety of our study subjects as well as quality of specimen processing. Her background of diverse experience compliment her interest in supplement science and research in health and wellness.