The respected credentials you want.

Originally from Europe, Olaf and Antoinette have many years of experience. They are at the forefront of their field through continuing-education courses in many specialized areas, including spinal manipulation, exercise, movement re-education, orthopedic and sports medicine and myofascial manipulation. Because of their knowledge, experience and results, Olaf and Antoinette are trusted by many area physicians for their patients.

Active Solutions Physical Therapy | Physical Therapist | Olaf Deroos

Olaf Deroos, PT, MHSc, MTC

Originally from the Netherlands and Dutch-trained, Olaf moved to the United States in the late 1980s. He worked at The Methodist Hospital, several private outpatient clinics, and saw patients through a home health company in Houston, TX. Olaf then moved and settled in Boulder, CO in 1993. Here he has focused on gaining experience in orthopedic injuries and manual therapy in various clinics.

Olaf founded Active Solutions Physical Therapy in 1999. To further increase his knowledge and skills, Olaf studied orthopedic and manual therapy at the University of St. Augustine, Florida and received an Advanced Master's of Health Science degree in 2003.

Olaf's mission is to help his patients achieve optimal function. He improves his patients' quality of life and overall health by treating and resolving their pain. His treatments are mostly a combination of joint mobilizations and joint manipulations along with exercise and instructions. His main interests are treating people with back pain and orthopedic injuries.

Besides physical therapy, Olaf enjoys spending time with his children, mountain biking, telemark skiing and playing chess. Olaf's knowledge and compassion for helping others with their pain and disabilities has successfully returned many people back to their active lifestyles.

Active Solutions Physical Therapy | Physical Therapist | Antoinette Vastenburg

Antoinette Vastenburg, PT, GCFP

Antoinette Vastenburg has been a physical therapist since 1987.

Originally from the Netherlands, she worked in various clinics in her home country before moving to Denmark where she worked in a hospital for one year. Antoinette moved to Houston, TX with her husband in 1989. Here, she learned about the Texan culture through home health, nursing homes, a psychiatric hospital and outpatient clinics.

After her time in Texas followed by six months of travel through South America, she and her husband found their new home in Boulder, CO in 1993. Here she gained experience in hand therapy, upper extremity injuries, work related injuries and home health through various clinics and settings.

Antoinette joined Active Solutions Physical Therapy, P.C. in 2002, a private practice established by her husband in 1999. Antoinette now enjoys working with patients with orthopedic injuries, balance disorders, thoracic outlet syndrome and chronic pain. She combines traditional physical therapy and the Feldenkrais method in her treatments.

When not working you can find Antoinette at the soccer field watching her son and daughter or telemark skiing on the ski slopes with her family. Antoinette also enjoys Latin American Dance, gardening, hiking and Qi-Gong. Antoinette's physical therapy knowledge along with her passion for learning new body movements has helped many people recover from their injuries.

Active Solutions Physical Therapy | Logan


Logan has been working the front desk with Active Solutions Physical Therapy since May 2016.

Logan is captivated by the human body and its abilities. He recently finished his undergraduate degree at the University of Colorado Boulder, where he enjoyed his anatomy and Exercise Physiology classes and labs. He now has a Bachelor’s degree in Integrative Physiology and hopes to become a certified personal trainer before applying to a Masters in Athletic Training program.

Logan spends much of his free time hiking and fly fishing, leading to a great appreciation for nature and all things outdoors. He enjoys spending time with friends and family, especially camping and hiking all over Colorado.

Active Solutions Physical Therapy | Daniel


Daniel has been working at the front desk here since August 2016.

Daniel is a Junior at the University of Colorado Boulder. He is an Integrative Physiology major, and his favorite classes thus far have been nutrition, anatomy lab, and physiology. Daniel is on track to graduate in May 2018, after which he will attend Physical Therapy School.

Daniel’s interest for Physical Therapy stemmed from his own experience with it when recovering from an injury, his passion for sports, working out, and his fascination with the human body. In his free time, he enjoys lifting weights, playing soccer and basketball, hiking, and attending professional sporting events as well as his younger brothers’ game

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