Motion Analysis Center Mary Free Bed Gait Analysis Grand RapidsUnderstanding how you move may mean a clearer path to independence. The tools and technology at the Motion Analysis Center capture a more complete picture of your motion. It’s technology to help you put your best foot forward.

The Motion Analysis Center (or MAC, as we like to call it) was established in 1994 at Mary Free Bed Rehabilitation Hospital in Grand Rapids, Michigan. It’s a high-tech facility where we study human movement. Here, we can analyze both your gait (lower body movement and walking) and your upper body motion.

Motion Analysis Center at Mary Free Bed We have the most experienced clinical gait analysis team of experts in the state of Michigan.  Our professionals are committed to the use of clinical gait analysis as part of treatment planning for patients with walking disorders. We use an evidence-based approach to provide recommendations to your treatment team based on your motion analysis data.

Our staff is actively involved in research and education leading to better understanding and treatment of human motion problems. Members are active in the Gait & Clinical Movement Analysis Society (GCMAS) and the American Academy of Cerebral Palsy and Developmental Medicine (AACPDM).

Team members also are involved in the education of current and future health care professionals through lectures and in-services, and collaborate in research opportunities with physical therapy students and other rehabilitation practitioners.

MAC team members include:

  • Mitch Barr, MPT, Physical Therapist: The primary physical therapist for the MAC and co-author on numerous peer-reviewed articles about pediatric movement disorders. Performs and interprets physical assessments and participates in all aspects of patient testing and reports.
  • Amy Lenz, Gait Lab Engineer: Undergraduate degree in biomedical engineering with a master’s degree in mechanical engineering. Performs most of the MAC’s data processing and technical tasks related to clinical and research cases, plus special projects related to data integrity and process improvement.


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