NINA SZEMIS Athletic Trainer DIAKADI.jpg


  • Return to Sport Conditioning

  • Injury Prevention and Athletic Durability Training

  • Nutrition for Active Lifestyles

  • Youth Strength and Conditioning

  • Beginner Fitness


Nothing will work unless you do.
— Maya Angelou

Nina is a board-certified athletic trainer specializing in nutrition and wellness management. She received her masters from Boston University and holds an undergraduate degree in athletic training from James Madison University. She is a NASM certified personal trainer, as well as Graston Technique and RockTape Functional Movement Techniques Provider. She is also certified by the Titleist® Performance Institute (TPI). Her areas of expertise include: transitional fitness, injury prevention and rehabilitation, behavior modification and nutrition for active lifestyles. Nina is currently pursuing her 200 hour yoga teacher certification, focusing in alignment-based hatha. 

As a clinician, Nina emphasizes active lifestyles rooted in personal fulfillment. Through realistic and attainable goals, she promotes customized fitness, beyond four walls. She has experience treating a wide variety of clients, including Division I college athletes, industrial and mechanical engineers, as well as those new to fitness. She is committed to empowering clients, helping them to change their perspective on recovery and wellness, through a whole-life approach. 

An east coast transplant, she is enjoying exploring everything California has to offer. Look for her hiking with her two dogs, or soaking in winter sports, whether on the slopes or cheering on the Sharks!


  • BOC | Certified Athletic Trainer

  • National Academy of Sports Medicine | Certified Personal Trainer

  • International Yoga Alliance | 200 hour Instructor

  • National Academy of Sports Medicine | Sports Nutrition Specialist

  • Titleist Performance Institute | Certified Specialist

  • Boston University | Med Health and Anatomy

  • James Madison University | Bachelors of Science in Athletic Training


As I transitioned out of physical therapy, I’ve been lucky to work Nina. She is an amazing trainer, highly knowledgable, focused on developing a plan that is completely designed to help you achieve your wellness goals and has mastered the art of making sure you hold yourself accountable through the journey!
— MH
Nina was instrumental in guiding our son’s rehab and strength training after ankle surgery. She has excellent knowledge in training high performing athletes and is accommodating to ever changing schedules. She is professional, on-time and is an excellent communicator. Importantly, He was able to compete at a very high level again without further injury. We are very thankful for Nina and her dedication to her craft.
— MD
Working with Nina was truly instrumental to my recovery from an injury and furthering my strength after I became healthy. By far the best trainer I have ever worked with, Nina and I developed a great rapport very quickly thanks to her incredible work ethic, easy going nature, and commitment to my training.
— NK