📖 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.
Step-Up on Stairs
Why Include This
Step-ups are a closed-chain, weight-bearing exercise that trains the exact task most patients need to reclaim: negotiating stairs and rising against gravity on one limb. They strongly load the lead-limb quadriceps and gluteals through a functional range and are a staple in knee osteoarthritis, patellofemoral pain, ACL and total-knee rehabilitation, and older-adult conditioning. Like sit-to-stand, they build lower-limb strength and power, which are well-established correlates of gait speed, stair-climbing ability, and fall risk in older adults; because they are unilateral, they also expose and correct side-to-side strength deficits and frontal-plane hip control (gluteus medius) that contribute to knee valgus. Step height directly grades the demand, making this an easily dosed home substitute for leg-press or squat loading. Evidence for progressive lower-limb strengthening improving function and reducing fall risk is robust, though most stair step-up studies are EMG/biomechanics and program components rather than isolated head-to-head trials, so I set the evidence level at moderate.
Evidence basis: moderate
Positions & Range of Motion
- Start
- Standing at the base of a staircase with one whole foot placed flat (heel supported) on the first step, other foot on the floor
- End
- Standing fully upright on the step with the working leg extended, having driven up through that heel, then lowered under control to lightly tap the bottom foot
- Range of Motion
- Working leg moves through ~90° knee/hip flexion up to full extension per rep
How to Perform
Standing at the bottom of a staircase, place one whole foot on the first step, then drive through that leg to lift your body up until you are standing on the step; step back down under control and repeat, alternating or completing all reps on one leg. Uses a single household stair (or the bottom step) as the platform.
Opens a YouTube search for “Step-Up on Stairs”
Coaching Cues
- 1
Place your whole foot flat on the step so your heel is supported, not just the ball of the foot.
(setup) - 2
Drive up by pushing through the heel of the top foot, keeping most of your weight on the stepping leg rather than pushing off the bottom foot.
(internal) - 3
Keep your kneecap tracking over your second and third toes; do not let the knee collapse inward.
(alignment) - 4
Lower slowly and quietly, tapping the bottom foot lightly instead of dropping onto it.
(tempo)
Evidence-Based Dosing & EMG Data
2-3 sets of 8-12 repetitions per leg, 2-3 times per week; rest about 60-90 seconds between sets. Start with the bottom step and light hand support, progressing height and load as control and strength improve.
Lead-limb quadriceps (vasti and rectus femoris) and gluteus maximus show the highest activation during the concentric lift; gluteus medius activity rises during single-leg loading to control pelvic drop. Higher step heights and slower eccentric lowering increase quadriceps and gluteal EMG demand.
Muscles Involved (12)
Primary Movers
Stabilizers
Synergists & Assistors
Easier Variations ↓
Hold the rail
Lightly hold the stair rail or wall with one or both hands to share load and provide balance while you build strength and confidence.
Assisted / partial step-up
Use a lower step or push off the bottom foot to help, reducing how much work the top leg does through range.
Harder Variations ↑
Slow eccentric step-down
Emphasize a 3-5 second controlled lowering on the working leg to increase eccentric quadriceps and gluteal demand.
Loaded step-up
Hold a backpack, water jugs, or dumbbells, or step onto a higher stair, to progressively increase resistance.
Target Movements (4)
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.