Lateral Leap and Catch

Sarah Johnson · recorded Jun 14, 2026 · lines at 60% height · metronome 40 bpm

Terminated · 3 of 3 strikes

Movement-screening output. Interpret with clinical history, strength testing, symptoms, and other assessments.

The trial stopped at the third faulty movement strike after 13.2s of 60s. Rates below are computed over the evaluated duration only and are not comparable to a full-duration trial without accounting for exposure.

Clean landing rate

63%

5 of 8 landings

Strikes

3 / 3

Faulty movement strikes

Lines crossed

Successful line crossings

Evaluated duration

13.2s

Protocol max 60s

Observed movement errors

Counts across evaluated landings — descriptive, not diagnostic

Knee valgus1 · 13%
Pelvic drop1 · 13%
Line not crossed1 · 13%
Balance loss0 · 0%

left limb

75%

3 clean · 1 strikes · 4 attempted

right limb

50%

2 clean · 2 strikes · 4 attempted

Analysis quality

Scorable with caution

Scores are shown but one or more quality checks were degraded. Confirm flagged items before acting on the output.

Protocol validity
Lines annotated at 60% height; metronome audible at 40 bpm
Landmark visibility
Lower-limb landmarks visible in 91% of evaluated frames
Event-detection confidence
2 of 14 landings below 0.75 confidence — flagged for review
Camera & annotation quality
Static front view, level horizon, mild lens distortion at frame edge
Frame rate
60 fps — adequate for landing-event timing

Missing or low-confidence inputs are reported as Not scorable — never imputed as zero.

Landing log

Every detected landing with the errors that triggered a strike · 0 of 8 reviewed

#	Time	Limb	Errors observed	Outcome	Confidence
1	2.4s	right	None	Clean	conf 0.94
2	3.9s	left	None	Clean	conf 0.92
3	5.5s	right	Knee valgus	Strike	conf 0.71
4	7.0s	left	None	Clean	conf 0.90
5	8.6s	right	Pelvic drop	Strike	conf 0.83
6	10.1s	left	None	Clean	conf 0.95
7	11.7s	right	None	Clean	conf 0.93
8	13.2s	left	Line not crossed	Strike	conf 0.88

Continuous metrics

Descriptive kinematics. No diagnostic cut-offs are applied.

Metric	Value	Trial median	Trial range	Reference
Peak knee valgus excursion right	11.4°	11.4	7.8 – 15.2	Descriptive only — no cut-off applied
Contralateral pelvic drop right	6.9°	6.9	3.1 – 9.4	Descriptive only
Ground contact time bilateral	0.34s	0.34	0.26 – 0.48	Median across evaluated landings
Leap distance symmetry bilateral	Not scorable	—	—	Requires calibrated line annotation on both lines

Session history

Clean landing rate across sessions

Apr 02, 202658% · 3 strikes · 14.2s
May 08, 202667% · 3 strikes · 18.6s
Jun 14, 202671% · 3 strikes · 22.5s

Sessions terminated on strikes have different exposure times. Compare rate and duration together.