What a camera can see in a push jerk
A push jerk drives the bar overhead and then re-bends the knees to receive it, so the athlete finishes standing up under a locked-out bar. The identity gate requires that second bend: without it the clip is a push press. From the side the camera measures the knee angle at the lowest point after the drive, which is the receiving dip, along with the elbow angle at the finish. From the front it can compare the two knees, which is where an uneven catch shows up.
How ScoreRep scores a push jerk
The rubric declares 4 scored criteria. The strongest single camera angle is the left side view. From that angle 80 of the 100 declared points are available; the rest need a different view and are removed from the total rather than scored as zero.
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 |
| Leg drive | 25 | time taken by the lifting phase | 0.6s or less |
| Receiving dip | 25 | knee angle at the bottom of the rep | 130° or less |
| Left-to-right symmetry | 20 | largest left-to-right difference in knee angle | 5° 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.
- Receiving dip — needs a left side, right side, left oblique and right oblique view.
- Left-to-right symmetry — needs a front and back view.
Does this push jerk rep count?
ScoreRep answers that in two separate steps. First, the clip has to read as a push jerk 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 push jerk rubric, the same file the scoring engine runs.
- Compare the push jerk 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 |
|---|---|---|
| Whether the hands finish above the shoulders | yes | the bar never reaches an overhead position |
| Vertical travel of the hips across the rep | 0.04 or more | there is no leg dip, which reads as a strict press |
| Smallest knee angle in the rep | 135° or less | there is no second dip to receive the bar, which reads as a push press rather than a push jerk |
| Elbow angle in the starting position | 120° or less | the bar is not in the front rack at the start |
| Elbow angle in the finish position | 155° or more | the elbows are not locked out overhead |
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, right oblique, front and back.
- 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.
Reading the result
A receiving dip that gets deeper as the set goes on is the normal, correct response to fatigue — the athlete drops further to meet a bar that is not travelling as high. A dip that stays shallow while the lockout score falls is the opposite, and usually means the athlete is pressing the bar out rather than moving under it. The two scores read together tell you which, and that distinction matters more than either number alone.
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.