Running Technique Reference

On the ground line, click the heel-contact point on the LEFT foot, then trace along the sole toward the toes to measure the strike angle.

At initial contact on the LEFT leg, draw the thigh line (hip → knee), then the shank line (knee → ankle). One drawing captures BOTH the knee flexion angle and the stride angle.

At midstance on the LEFT leg, draw the thigh line (hip → knee), then the shank line (knee → ankle). The angle between them is knee flexion.

From behind the LEFT leg, draw two lines. Line 1 (tibia midline): click the middle of the soleus (mid-calf), then the bottom of the Achilles tendon. Line 2 (calcaneus): click the top of the heel bone, then the bottom of the heel. The angle between the two lines is rear-foot pronation (eversion).

During LEFT-leg stance, click the left iliac crest first, then the right. The angle vs. horizontal is the contralateral drop.

During LEFT-leg stance, click the base of the neck (C7 spinous process), then the midpoint of the pelvis. The angle vs. vertical is the trunk's lateral bend.

From the front, draw the LEFT thigh line (hip → knee) and then the shank line (knee → ankle). Inward deviation is adduction (valgus); outward is abduction (varus).

From the front, trace the LEFT foot axis from the ankle to the mid-toe. The angle vs. line of progression (image vertical) is the adduction (in-toeing) or abduction (out-toeing).

Draw distinct lines like the other tools. Line 1 — the trunk: hip → base of the neck (so the line tracks the trunk midline, not the shoulder joint). Then press Enter to finish, or add an optional Line 2 — the neck: base of neck → ear. The trunk line gives the forward lean; the optional neck line adds head position (head in line with the trunk).

At midstance, draw the upper arm (shoulder → elbow) first, then the forearm (elbow → wrist). The interior angle at the elbow is the arm-carriage (elbow-flexion) angle.

At LEFT toe-off, draw the trunk line (base of the neck → hip — so it tracks the trunk midline, not the shoulder joint) first, then the thigh line (greater trochanter → lateral epicondyle of the knee). The angle between them is hip extension — how far the thigh has travelled behind the line of the pelvis. A thigh still AHEAD of the hip at toe-off reads as a NEGATIVE value (“6.2° flexed”) — that is not a small amount of extension, it is none at all, and it grades more severely than a small positive.

At toe-off, click the BACK of the pelvis (PSIS) first, then the FRONT (ASIS). The angle of that line vs. horizontal is the tilt: positive means the front has dropped (anterior tilt), negative means the pelvis is tucked under (posterior). ✨ places the pair across the hip square to the trunk — that is a starting position, not a reading. The angle only means anything once both points are on the bony landmarks.

At LEFT toe-off, draw the shank line (knee → ankle) first, then the foot line (lateral malleolus → 5th metatarsal / pinky toe). The reading is how far the foot opens past a neutral 90° resting position — positive plantarflexed, negative dorsiflexed.

Press ✨ Auto-measure to compute steps/min straight from the tracked step rhythm — or do it by hand: mark a window, count every foot contact (both feet) inside it, and the tool computes steps per minute.

Press ✨ Auto-measure to compute step length in cm, self-scaled from the athlete's height (no object calibration): it measures the footprint-to-footprint travel per stride from the tracked foot contacts (÷ 2 per step) — works on treadmill and overground clips. Or draw it by hand: at initial contact, span lead foot → trailing foot.

Auto-only. With this tool selected, press ✨ Auto-measure: it measures how far the centre of mass rises and falls, self-calibrated from the athlete's height, and draws the band on the frame with the average in cm. On a Lateral·L clip it reads the LEFT leg's stance bounce; on Lateral·R, the right. Run it on both side clips to get the L/R pair and its asymmetry.