Strong Foundation Fitness
Exercise is the best medicine
845 S. Coast Highway, Oceanside CA
North County San Diego
The recent osteoporosis statistics are alarming. One in two women over 50 will suffer an osteoporosis-related fracture during their lifetime. These falls are a primary cause of disability among patients. Right here in the San Diego community, ONERO™ provides a safe and effective training program designed to build long-term bone resilience.
The Onero™ Method
Strong Bones Need Strong Training
Strong Foundation Fitness offers ONERO™ to our San Diego community. ONERO™ is the only evidence-based exercise protocol clinically proven to safely increase bone density for those managing osteopenia or osteoporosis. By merging high-intensity resistance with targeted impact training, this system enhances skeletal strength and functional movement while decreasing fall-related risks. Every class is supervised by a Doctor of Physical Therapy to provide professional oversight on form and loading.
Meet Our Team
Diana Tsai, DPT
As a Doctor of Physical Therapy with more than 20 years of clinical experience, I am passionate about helping people improve their strength, mobility, and overall quality of life. My professional interests include orthopedics, bone health, and nutrition, and I enjoy partnering with clients to help them achieve their individual health and wellness goals. I am a licensed Onero™ provider and have earned a certificate in Nutrition through the UC San Diego Extension program. This combination allows me to take a whole-person approach, addressing not only movement and strength but also the lifestyle factors that support long-term health. When I am not working, I enjoy surfing, Pilates, yoga, gardening, reading, traveling, and spending quality time with my husband and dog.
Abby Brantl, DPT, OCS
With two decades of experience as a physical therapist, I specialize in orthopedics and pelvic floor health. I hold a Doctor of Physical Therapy from Northwestern University and a Bachelor's in Movement and Sports Science from Purdue University. My mission became personal two years ago when I was diagnosed with osteoporosis in my early 40s. By committing to dedicated strength training, I successfully increased my T-score by 4.5%, and I am eager to help other women achieve similar breakthroughs. Outside the clinic, I love beach days and camping trips with my husband and three children, or simply catching up with family and friends.
★★★★★
★★★★★
"I feel like a new, stronger, more confident person after starting the Onero training program for bone health and fitness with Diana and Abby. I’m building strength, balance, mobility, and bone health in a way that fits my pace and goals—and I actually look forward to every session. I am so grateful for and empowered by my Strong Foundation Fitness community!"
- Rebecca via Google Reviews
★★★★★
"Abby and Diana of Strong Foundation Fitness are truly expert trainers and physical therapists. The excellent foundational training they provide, along with customized adjustments, has me feeling confident building up my bones, increasing my strength, and improving my balance while protecting my back. Highly recommend!"
- Rene U., via Google Reviews
