📖 Static demo — read-only snapshot
You’re browsing a static build of the Body IQ knowledge graph, so everything loads with no backend. A few things that need the live server are turned off here:
- Global search (sidebar) is disabled — it queries the API.
- The JSON API and the API “Try it” playgroundaren’t included.
- The data is a snapshot — it refreshes only when the demo is rebuilt, not live from the database.
Everything else — the body map, progression ladders, coverage heatmap, exercise finder, and all anatomy/exercise/source pages — works fully. The full app (live search + API + database) runs from the source on GitHub.
Wall Hamstring Stretch
Why Include This
Indicated for reduced hamstring extensibility and limited straight-leg-raise range, which is common with low back pain, prolonged sitting, and post-injury stiffness. Static stretching reliably increases hamstring length and joint ROM: holds around 30 seconds produce measurable extensibility gains, and this is the best-supported benefit (moderate evidence). The supine doorway setup is preferable to toe-touch or standing stretches because the trunk and pelvis are supported on the floor, which reduces lumbar flexion load and lets the person isolate the hamstring without straining the low back — useful for older adults or anyone with back sensitivity. Note that evidence for hamstring stretching preventing strains or improving performance is weak; the honest, well-supported reason to include it is targeted ROM/flexibility restoration and comfort in tasks requiring hip flexion with a straight knee (bending, reaching, gait).
Evidence basis: moderate
Positions & Range of Motion
- Start
- Supine in a doorway, buttock close to the door frame, the working leg raised straight and resting against the wall/door frame, the opposite leg extended flat through the doorway, low back and pelvis relaxed on the floor
- End
- Working leg held with knee straight and hip flexed to a firm but tolerable hamstring stretch, ankle dorsiflexed (toes pulled toward face) for a calf/neural component; sustained statically
- Range of Motion
- Hip flexion held near the point of first firm hamstring tension (commonly ~60-90° depending on flexibility) with the knee kept in full extension; static hold, minimal joint excursion once positioned
How to Perform
Lie on your back in a doorway with the leg to be stretched raised and resting straight against the wall or door frame; the other leg extends flat through the doorway. Gravity and the wall provide a low-load, sustained hamstring stretch with no equipment beyond a doorway.
Opens a YouTube search for “Wall Hamstring Stretch”
Coaching Cues
- 1
Lie so your buttock is close to the door frame, then slide the working leg up the wall until you feel a firm but tolerable pull behind the thigh — not sharp pain.
(setup) - 2
Keep the raised knee straight; gently press the back of the knee toward the wall rather than letting it bend.
(external-focus) - 3
Let the opposite leg stay long and flat through the doorway so the pelvis and low back stay relaxed on the floor.
(form) - 4
Pull your toes down toward your face to add a calf and nerve-tension component; ease off if you feel tingling.
(progression)
Evidence-Based Dosing & EMG Data
Hold 30 seconds per repetition, 3-4 repetitions per leg, once or twice daily. Static holds of ~30 s are supported for ROM gains; longer or more frequent holds add little. Stretch to firm tension, never sharp pain, and breathe normally throughout.
Passive stretch with low target-muscle EMG; the hamstrings should be relaxed (minimal EMG) to allow lengthening, while light quadriceps activity may assist via reciprocal inhibition.
Muscles Involved (7)
Stabilizers
Lengthened / Stretched
Synergists & Assistors
Easier Variations ↓
Bent-knee doorway position
Rest the leg higher/closer with the knee slightly bent, or scoot the hips farther from the frame, to reduce hamstring tension for very tight or acutely irritable individuals.
Bent opposite knee
Bend the lower (non-stretching) leg with the foot flat on the floor to flatten the low back and remove any pull on the lumbar spine.
Harder Variations ↑
Hips closer with full knee extension
Move the buttocks nearer the wall and fully straighten the raised knee to increase the stretch through hip flexion and knee extension.
Add ankle dorsiflexion / active hold
Pull the toes toward you and add a gentle contract-relax (push the leg lightly into the wall for a few seconds, then relax into a deeper range) to bias the calf and use PNF-style gains.
Target Movements (3)
Why This Exercise Matters
Everyday activities this exercise helps you do — essential means it directly trains the capacity the task needs:
Goals This Helps With
Rehab, performance, prevention, and mobility goals this exercise supports — essential means it's a cornerstone:
Research Notes
claude-researched 2026-07 (home/bodyweight), panel-verified muscle roles + rationale. Sources not yet linked.