The Spine Flexion Test measures how far the client can bend forward through the spine and trunk. It is useful for tracking spinal mobility, comparing baseline to follow-up and adding context to bending, lifting, squatting and general movement assessment.
A client may report stiffness when bending forward, difficulty reaching toward the floor, or discomfort during lifting and hinging tasks. The Spine Flexion Test provides a repeatable way to record forward bending ROM and track whether it changes across sessions.
The MAT article describes the client standing upright, with the Measurz inclinometer aligned at the T12 spinous process. The client flexes forward as far as possible while keeping the knees straight, and the result is recorded in Measurz. The MAT source lists at least 100 degrees as a practical reference for this test.
Test name: Spine Flexion Test
Purpose: Assess spinal/trunk flexion ROM
What it assesses: Forward bending range
Equipment: Measurz inclinometer or equivalent inclinometer
Key finding: Flexion angle in degrees
Best used with: Spine extension, lateral flexion, rotation, straight leg raise, hip flexion and functional bending assessment
Key limitation: It measures movement range, not the cause of restriction or pain
The Spine Flexion Test is a range of motion assessment for forward bending. It captures trunk/spinal flexion using an inclinometer placed at a consistent landmark, commonly T12 in the MAT protocol.
It is used to establish baseline ROM, monitor progress, compare sessions and add context to tasks that involve bending, lifting, sitting, hinging or reaching.
It measures spine/trunk flexion ROM in degrees. It does not isolate lumbar movement only, identify the pain source, measure hamstring length alone or diagnose a spine condition.
This is usually an active ROM test because the client flexes forward themselves. Passive spine flexion testing is not typically used in this standing format. If any modification is used, record it clearly.
Clients with general movement goals, gym clients, athletes, older adults, clients returning to bending or lifting, and anyone where spine ROM tracking is relevant.
Measurz inclinometer, flat standing space, Measurz app and notes for pain, symptoms, knee position, movement quality and retest comparison.
Ask the client to stand upright with feet in a consistent position. Place the Measurz inclinometer at T12. Ask the client to bend forward as far as they can while keeping the knees straight. Once maximal ROM is reached, pause and save the result.
Ask where the client feels the movement. Record whether the limitation feels like back stiffness, posterior thigh stretch, pain, balance limitation or guarding.
Record the score in degrees. The MAT article lists at least 100 degrees as a practical target for this test, while noting that normal ROM varies by age, sex and overall health.
A lower score may indicate reduced forward bending ROM, but it does not explain the reason. Interpret with symptoms, hamstring mobility, hip flexion, straight leg raise, spine extension and functional bending findings.
Evidence level: Level 2, related or closest available reference values.
Use at least 100 degrees as a practical MAT reference, not a universal rule. Baseline comparison and repeated testing under the same setup are usually more useful than a single cut-off.
Recent reviews support the use of smartphone and inclinometer-based methods for some spinal ROM measures, but reliability depends on the specific movement, body region, landmark, device and protocol. A 2020 review reported that smartphone assessment of cervical flexion, extension, lateral flexion and lumbar flexion appears feasible, while noting that validation gaps remain for some spinal movements.
Common errors include bending the knees, inconsistent T12 placement, measuring hip hinge more than spine movement, not recording symptoms, and comparing different test positions.
Use this test to monitor spine flexion ROM, track changes after mobility or training blocks and add context to forward bending, hinging, squatting and lifting.
Record flexion angle, pain score, symptom location, knee position, foot position, inclinometer placement, movement quality, baseline score, retest score and related hip/hamstring findings.
Spine Extension Test
Spine Lateral Flexion Test
Spine Rotation Test
Straight Leg Raise Test
Hip Flexion Test
90/90 Active Knee Extension Test
It measures forward bending ROM through the spine and trunk.
The MAT article lists at least 100 degrees as a practical reference for this test.
No. It is a movement finding and should be interpreted with symptoms, history and related tests.
Yes, for this MAT protocol. Knee bending changes the test.
The Spine Flexion Test measures forward bending ROM.
T12 placement and knee position must be consistent.
Use reference values cautiously.
Record symptoms and movement quality.
Track change over time in Measurz.
Cuesta-Vargas, A. I., Galán-Mercant, A., & Williams, J. M. (2020). Validity and reliability of smartphones in assessing spinal kinematics: A systematic review. Journal of Manipulative and Physiological Therapeutics, 43(6), 511–523.
Pourahmadi, M. R., et al. (2020). Psychometric properties of the iHandy Level smartphone application for measuring lumbar spine lordosis and range of motion: A systematic review. Journal of Sport Rehabilitation, 29(3), 352–359.
Fraeulin, L., et al. (2020). Intra- and inter-rater reliability of joint range of motion tests using tape measure, digital inclinometer and inertial motion capturing. PLOS ONE, 15(12), e0243646.
