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Tyrannosaurus Flex: Finding the "Fair-ly Normal" Grip

Who can join

Ages 2 to 12 · All sexes · Healthy volunteers welcome

Inclusion Criteria:

* Children between the ages of 2-12 year old who demonstrate participation interest and provide informed consent and assent (when appropriate).

Exclusion Criteria:

* Presence of a known musculoskeletal, neurological, or neuromuscular condition affecting upper limb strength or function (including, but not limited to, cerebral palsy, brachial plexus injury, muscular dystrophy, etc.)
* Diagnosis of a systemic condition affecting the musculoskeletal or nervous system
* Previous hand, wrist, or upper limb surgery
* History of hand, wrist, or upper limb trauma
* Current pain in either hand or upper limb
* Persons unable to follow standardized commands when presented to them in English

About the study

The purpose of this study is to evaluate the performance of the Dinomometer and establish normative data to inform clinical standards and benchmarks for therapeutic practice.

This is a cross-sectional study designed to collect normative grip strength data from a large sample of the general population in Minnesota. Participants will primarily be recruited from attendees of the Minnesota State Fair. Grip strength will be measured using the Dinomometer, a non-invasive handheld grip strength measurement device.

The study should take approximately 10-15 minutes to complete for each participant including enrollment and completion of study procedures. Follow-up is not required.

What is being tested

• Dinomometer (device)

Sponsor: University of Minnesota · Participants: 600 · Started: Sep 6, 2026

Contact the study team

• Corey McGee, PhD, MS, OTR/L, CHT, FAOTA · Phone: 612-626-5645

Official record on ClinicalTrials.gov — NCT07735195

Locations in the U.S.

From ClinicalTrials.gov, data retrieved Nov 15, 2026. Each study sets its own eligibility; the study team decides who can join.