What a camera can see in a power snatch
A power snatch takes the bar from the floor to overhead in a single pull and receives it above a full squat. The rubric scores the elbow angle in the finish frame, the largest hip angle at the top of the pull, and the knee angle at the catch. All three are strongest from a side or oblique view. Three identity checks keep the movement distinct: racked elbows at the start mean a clean or a thruster, a full-squat catch means a squat snatch, and an upright starting torso means the bar came from the hang.
How ScoreRep scores a power snatch
The rubric declares 4 scored criteria. The strongest single camera angle is the left side view. Every criterion below is available from that angle.
The score is the points earned divided by the points the recorded angle could support, so a clip filmed from a limited angle is never quietly marked down for what the camera could not see. At least 60% of the applicable weight has to be measured before a result is ranked at all.
| Criterion | Points | Measured from the athlete’s pose | Full marks when |
|---|---|---|---|
| Overhead lockout | 30 | elbow angle in the finish position | 165° or more |
| Hip extension | 25 | largest hip angle in the rep | 172° or more |
| Power catch | 25 | knee angle at the bottom of the rep | 140° or less |
| Explosiveness | 10 | time taken by the lifting phase | 0.7s or less |
Criteria that depend on the camera angle
These criteria are excluded, not estimated, when the recorded angle cannot support them. That is why the same set filmed twice from different positions can produce two valid scores out of two different totals.
- Hip extension — needs a left side, right side, left oblique and right oblique view.
- Power catch — needs a left side, right side, left oblique and right oblique view.
Does this power snatch rep count?
ScoreRep answers that in two separate steps. First, the clip has to read as a power snatch at all: every check in the table below has to pass, and a reading the camera could not take counts as a fail, never as a pass. A clip that fails is returned unranked with the reason attached, rather than scored low against the wrong rubric, and no template can override a failed check.
Second, the scoring criteria award points. Falling short of a full-marks threshold costs points, not the rep. Every number here is read from version 2 of the power snatch rubric, the same file the scoring engine runs.
- Compare the power snatch standard with the other 29 movements on the movement standards page.
- How the rep counter decides between a valid rep and a no-rep, station by station.
| Reading | Has to be | Otherwise rejected because |
|---|---|---|
| Vertical travel of the hips across the rep | 0.05 or more | the hip pull is not strong enough |
| Largest hip angle in the rep | 160° or more | the hips do not extend, so the pull is incomplete |
| Whether the hands finish above the shoulders | yes | the bar does not finish overhead, so this is not a snatch |
| Elbow angle in the starting position | 130° or more | the elbows are in the front rack at the start, which reads as a thruster or a clean rather than a snatch |
| Smallest knee angle in the rep | 100° or more | the bar is received in a full squat, which reads as a squat snatch rather than a power snatch |
| Elbow angle in the finish position | 155° or more | the elbows are not locked out overhead at the finish |
| Torso lean in the starting position | 20° or more | the torso is too upright at the start, which reads as a hang power snatch rather than a power snatch from the floor |
What the recording has to contain
Eligibility decides whether a result can enter a leaderboard. Failing it does not block the feedback — the clip is still scored and returned, but marked unranked with the reason attached, so a bad camera position never silently becomes a bad score.
- A pose has to be detected in at least 55% of the frames.
- The camera angle has to be one of: left side, right side, left oblique and right oblique.
- At least 1 complete repetition has to be detected.
What is deliberately not scored
Identity, repetition counting, eligibility and the score are derived only from the athlete’s pose. Measurements that come from tracking an external object — the path of a barbell, for example — are drawn on the review overlay but are deliberately outside the scoring contract, so they never affect the number.
For this movement that applies to Bar path. It is listed in the rubric so the exclusion is visible rather than silent, and it earns no points.
Reading the result
The catch criterion behaves like the power clean’s: a quarter squat scores highest, and both a rigid catch and a full squat score lower. Athletes new to the lift usually lose points on lockout rather than on the pull, because the arms bend to steer a bar that is drifting. If the lockout score falls while hip extension holds, the problem is overhead position and stability, not power.
A technique score is educational feedback about visible movement. It cannot tell you whether a load is safe for your joints, whether pain means something, or whether a programme suits you. Those judgements need a coach or clinician who knows your history.