Fitness Staff

Mary Byrne
Health & Wellness Director

Mary has been employed by the James Family Prescott YMCA for 10 years. She is certified to Personal Train through ACE and certified in Group Instruction through the YMCA of the USA and AFFA. Making sure that the YMCA maintains a quality fitness staff to take care of members is a priority. Whether you are looking for a Personal Trainer or get involved in a Group Fitness class, you will find am impressive group of qualified individuals dedicated to helping our members. Mary still teaches the occasional class to stay in the mix, but now channels her lifelong enthusiasm for fitness into programming and management.
Nino Filippinetti
Personal Trainer

From Switzerland, Nino is an competitive mountain cyclist, and avid hiker and snow skier. Before becoming a Certified Personal Trainer and Pilates Instructor, Nino was diagnosed with arthritis of the spine. It is no wonder that his special expertise is core exercise. Nino enjoys working with people to help them achieve their unique goals.

Caleb Miller
Personal Trainer

Caleb is a Personal Trainer certified through the National Federation of Professional Trainers who also recently graduated with a degree in Exercise Science.  He has the ability to train a wide variety of clients due to his experience as a multi-sport athlete, including one of the top football training programs in the Midwest, as well as, work and personal experience in a rehab setting.  His specialities include physicque training, nutrition and working with aging adults.  Caleb enjoys working the clients who are passionate about changing their lives to improve their health and well-being.  Using proper training, nutrition and stress management, he can help you become the best you possible.

Chris Sieben

Personal Trainer

Chris is an excellent listener with the ability to create a personalized fitness program that will help you in reaching your fitness goals. Having had both a full hip and partial knee replacement, he understands the challenges of recovery. Currently, he competes in mountain bike events and also enjoys backpacking, hiking, skiing, kayaking and other outdoor activities. So, whether you are rehabilitating, training for an event, or improving overall health, he has the experience and knowledge to create a fitness program right for you. Chris is an ACE certified personal trainer with additional certifications in Functional Movement Systems (FMS), YMCA Group Fitness and Schwinn Cycling instruction. , He is also an IMBA mountain bike certified guide and basic skill instructor.


Chuck DeGraff

Personal Trainer

Chuck has been an avid weightlifter most of his life. He was very active in sports and later coaching. After going through a total knee replacemet due to a decades old sports injury, and having to learn how to train differently, he wanted to pass on some of that knowledge to help others to recover and get back to an active and healthy lifestyle. He received his personal training certification from the National Academy of Sports Medicine (NASM) also receiving a certification speciality in Senior Fitness. He is very motivated to help people of all ages meet their goals and get the most they can from life.