Weightlifting Measurement Guide: Reading Snatch and Clean & Jerk Phase by Phase

Jul 3
8 min read

In weightlifting, the line between a made lift and a miss isn't the weight — it's the phases. Even at the same 100kg, if you spend all your force on the first pull from the floor to the knees (1st Pull), the speed won't be there for the second pull (2nd Pull), the very phase that's supposed to be the most explosive. The bar doesn't float high enough, and the catch collapses. To the eye it just looks like "so close," but break the lift into phases and exactly where it fell apart shows up in the numbers.

The catch is that these phase differences pass by in tenths of a second. A coach's eye and instinct can tell that "the 2nd Pull was late," but it's hard to measure precisely how fast the first pull was and how low the catch was received on every single attempt. This guide is about capturing one lift as phase-by-phase data and learning how to read those numbers — what values you get, what they mean, and what to keep in mind to get data you can trust in the field.

What You Get When You Measure a Lift

Measure a single lift with PoinT GO and it breaks that lift down phase by phase — the snatch and clean into three pulls and the catch, and the clean & jerk with the jerk added on top.

Phase	What it shows
1st Pull	From the floor to around the knees. Go too fast here and the rest of the lift dies
2nd Pull	The most explosive drive. This is where the lift is made or missed
3rd Pull / Catch	Pulling under the bar to receive it — how low and how stable the catch was
Jerk (clean & jerk)	The final phase, driving the bar from the shoulders to overhead

For each phase you get peak and average velocity, peak acceleration, phase duration, and the height lifted (range of motion). For the lift as a whole, you also get the following:

Peak power: A measure of how explosive the movement was. Because it looks at the power of the movement itself regardless of bar weight, you can compare a light warm-up and a heavy attempt on the same scale.

Hook (catch) depth grade: Shows how low you received the bar, expressed as a grade. Elite lifters drop only as much as they need to; when the catch is excessively deep, it's a sign the bar wasn't floated high enough.

Technique notes: Automatically flags states like "only 1st Pull detected," "2nd Pull not captured during the transition," or "clean completed without the jerk." You can see at a glance which phase didn't come through cleanly.

One thing worth noting: the power and force values from a weightlifting measurement aren't ground reaction forces measured directly like a force plate — they're derived from the movement of the bar. That's why they're strong at showing, phase by phase, "how fast and in which phase you drove." The way these phase-by-phase velocity and power values are extracted is handled by PoinT GO's proprietary algorithm, built by optimizing a 9-axis IMU wearable sensor, so the coach can focus purely on putting the numbers to work in the field.

Choosing the Lift Type and Options

Even within "weightlifting," what you look at depends on what you're measuring. With PoinT GO, you choose three things before measuring.

Lift type: Snatch, Clean, or Clean & Jerk. The snatch goes from the floor to overhead in one motion, the clean to the shoulders (front rack), and the clean & jerk adds the jerk to the clean to drive the bar overhead.

Catch style: Choose between full (receiving deep in a squat) and power (receiving shallow without a squat). Even in the same snatch, a power catch means you have to float the bar higher and faster, so the velocity values mean something different.

Starting position: Choose whether to start from the floor or from the hang (knee or hip height). The hang is good when you want to skip the first pull and focus on the transition and the 2nd Pull.

Pick to match the event and your training goal. To polish pure technique, go light with power and hang variations; to see the competition movement as-is, measure from the floor with a full catch. Since it factors into the power calculation, enter the bar weight as well.

Measuring a Lift with PoinT GO

Measuring a lift in the field is a simple flow. Whether you're on the app (connect) or the web (coach-web), the steps are the same.

Attach the sensor: Fix the 15g PoinT GO sensor firmly to the bar. Keeping it from shaking or rotating during the lift matters for phase-detection accuracy.

Set up the lift: Choose the type (snatch / clean / clean & jerk) → catch style (full / power) → starting position (floor / hang), and enter the bar weight. If you're going to stack multiple attempts, turn on continuous measurement mode.

Calibration (optional): Repeat just the first-pull motion a few times at a light weight and the sensor learns that athlete's pattern. It's a step that sharpens first-pull detection — you can skip it and still measure, but going through it steadies phase detection.

Get ready: Press "Ready" and hold the starting position through a short countdown. The sensor sets its reference point from this still position.

Measure: On the signal, lift explosively. The phases — stabilization → 1st/2nd/3rd pull → catch → jerk (clean & jerk) — are captured automatically, with a voice cue or beep at every phase change.

Review and save: Check the phase-by-phase velocity and height, peak power, hook depth grade, and technique notes, then save — it goes into the athlete's record.

A big impact — like the bar dropping to the floor — can jostle the sensor readings for a moment. When that happens, give it a second or two to settle before the next attempt.

Measuring with the connect app lets you measure right there in the gym with just a phone and stack up multiple attempts, so it's easy to check in real time during training.

How to Read the Results

Reading the numbers you measured is where the real work is. Here's how to look at weightlifting results.

Start with the 2nd Pull. A lift is made or missed in the second pull. If this phase's peak velocity is noticeably lower than usual, it signals that the weight was heavy or that the timing of triple extension (extending the ankles, knees, and hips at once) was off.

Watch the flow between phases. If the first pull is too fast and no extra acceleration comes in the 2nd Pull, you spent your force early off the floor. Conversely, if velocity drops sharply in the transition above the knees, it can mean the bar drifted away from the body. Splitting the lift into phases pins down "where" it broke down.

Read the catch through the hook depth grade. Receiving the catch too deep is often a sign the bar wasn't floated high enough. If the grade keeps coming out low, work on the height and velocity of the 2nd Pull first.

Use the technique notes to pinpoint the failure. Notes like "2nd Pull not captured during the transition" or "clean completed without the jerk" tell you right away which phase didn't come through. Keep in mind, though, that this is information about phase detection. Form feedback — like whether the bar path drifted forward or back — still needs to be checked alongside video.

Look at trends and consistency over any single value. We're human, so every attempt differs a little. Stack up several attempts and you'll see whether the day's condition held steady and whether phase velocities are maintained as the weight goes up. If the 2nd Pull velocity keeps dropping rep after rep at the same weight, fatigue is building — at that point it's better to keep only the good reps and wrap up the set.

Getting Data You Can Trust

When the measurements wobble, so does your interpretation. Just keeping these in mind in the field makes the data far steadier.

Fix the sensor firmly to the bar. If the sensor rotates or rattles during the lift, phase detection wobbles. Keeping the attachment position the same every time also helps with comparisons across attempts.

Run the calibration if you can. It's an optional step where you repeat just the first pull a few times at a light weight to teach the sensor that athlete's pattern. You can skip it and still measure, but going through it makes first-pull detection crisper. Recalibrate when the athlete changes.

Measure after warming up. Going for a max lift when the body isn't loose yet gives low phase velocities and raises the injury risk.

Measure under the same conditions. Keep the lift type, catch style, and starting position the same every time, and enter the weight accurately — otherwise the comparison doesn't mean much. Mixing catch styles in particular makes the velocity values come out differently.

Pause briefly after an impact. Right after dropping the bar hard to the floor, the sensor readings can spike for a moment, so let it settle for a second or two before the next attempt.

Managing at the Team Level

Measuring one athlete and managing a whole team are different jobs. This is where coach-web (the web dashboard) comes into its own.

Per-athlete trends: Lay out an individual athlete's phase velocities and peak power over time, and track how much they've risen against a baseline.

Comparison by variation: Collect records split out by snatch / clean / clean & jerk and full / power catch. It's easy to spot at a glance which variation the weakness shows up in.

Program assignment: Build measurement and training programs that include weightlifting, assign them to athletes, and run them as a regular measurement routine.

The flow is: measure with the app in the field, and that data gets organized at the team level in coach-web. Because the app and the web share the same algorithm, the same lift gives the same result no matter where you measure it.

App or Web — Which Should You Use?

Both do measurement and analysis in full. The difference isn't capability — it's the situation.

On-site or on the move: the connect app: With just a phone you can measure right away and stack up multiple attempts as you go. It's the tool most commonly used in the gym.

Managing a team systematically: coach-web: This is where you organize teams, permissions, and programs on the desktop and compare and analyze accumulated data by variation. You can also connect a sensor and measure live from the web (desktop Chrome or Edge).

Usually the natural combination is to measure in the field with the app and review it all together on the web.

Frequently Asked Questions

Q. Can phase data help weightlifting beginners too?

If anything, it's even more useful for beginners. Experienced lifters can tell a good lift from a bad one by feel, but beginners don't have that sense yet. Phase-by-phase velocity shows "the first pull was too fast that time" in numbers right away, so learning speeds up. That said, for the first few weeks it's better to focus on grooving the correct movement pattern rather than fixating on the numbers, then bring in phase velocity once the pattern is stable.

Q. I have lifts that fail even though the peak velocity is good. Why?

Even with fast velocity, if the bar flies forward or back it's hard to receive. Phase data shows "how fast," but form issues — like which way the bar path drifted — need to be checked alongside video. The good combination is to narrow down where it broke down with phase velocity, then confirm the form in that phase on video.

Q. Does the power value get bigger the heavier the bar?

No. PoinT GO's peak power looks at how explosive the movement itself was, regardless of bar weight. That's why you can compare a light warm-up and a heavy attempt on the same scale. If you want to manage the weight itself, look at the weight and phase velocity together.

Q. Can I measure snatch and clean & jerk together in one session?

Yes. Just choose the lift type before measuring, and records accumulate separately by variation. Splitting and comparing by variation in coach-web makes it easy to catch which event the weakness shows up in. Just be sure to select the right settings each time you change the type or catch style so the data doesn't get mixed together.