Could your phone replace a $1,000 Back-Flexibility device?
NCT ID NCT07680231
First seen Jul 02, 2026 · Last updated Jul 02, 2026
Summary
This study compares a smartphone app (iPhone Level) to a specialized device (BROM) for measuring how much the lower back can bend forward, backward, and sideways. Researchers will enroll 120 healthy male university students aged 18–25 with normal body weight. If the app works well, it might become a simple, inexpensive way to assess back motion.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- iPhone Level application
- What this could lead to
- If the app proves accurate, it could offer a low-cost, accessible way to measure back motion in clinics or at home.
- What could go wrong
- This is a small, early-stage study in healthy young men only, so results may not apply to people with back pain or other ages. The app may not match the precision of the dedicated device.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Participants
-
120 people
The number who actually took part.
- Started
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Dec 2025
- Finished
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May 2026
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
Healthy University Students with normal BMI Healthy Male university students
- Ages
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18 to 25 years
- Sex
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Male participants only
- Healthy volunteers
-
Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: 1. Age 18-25 years old 2. Healthy Male university students 3. All participants have normal BMI Exclusion Criteria: 1. Recent back, pelvic, or abdominal surgeries, traumatic injury to the back . 2. Lower limb deformities, e.g., leg length discrepancy. 3. Adolescent idiopathic scoliosis 4. Any overweight or obese participants
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Cairo University
Giza, 12613, Egypt
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Other studies related to the condition(s) this trial covers.