> ## Documentation Index
> Fetch the complete documentation index at: https://docs.uplift.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Max Trunk COM Velocity

> Maximum linear velocity of the trunk center of mass during the pitch.

## Technical Details

* **Variable Type:** Discrete Metric
* **Data Type:** Float
* **Units:** m/s
* **Column Name:** `max_trunk_com_velocity`
* **Aggregation:** mean
* **Precision:** 3
* **Measurement:** Maximum linear velocity of trunk center of mass
* **Typical Range:** 1.755 – 2.896 m/s
* **Optimal Direction:** Higher is better

## Description

Max trunk COM velocity measures the maximum linear velocity of the trunk center of mass during the pitch.
This indicates the peak forward velocity of the trunk segment as we assume the max velocity will be oriented towards home plate.

Increasing trunk linear velocity (with all else held constant) will increase pitch speed.

## Normative Ranges

Percentile distributions by competition level from the 2026 Q1 dataset; the optimal range spans the 75th–90th percentiles.

| Population         | Optimal Range (75th–90th) |  10th |  25th |  50th |  75th |  90th |
| ------------------ | ------------------------- | :---: | :---: | :---: | :---: | :---: |
| Youth              | 1.886 – 2.382 m/s         | 1.387 | 1.489 | 1.646 | 1.886 | 2.382 |
| High School        | 2.624 – 2.926 m/s         | 1.636 | 1.826 | 2.166 | 2.624 | 2.926 |
| College            | 3.001 – 3.321 m/s         | 2.142 | 2.406 | 2.690 | 3.001 | 3.321 |
| Professional       | 3.785 – 5.816 m/s         | 2.717 | 2.989 | 3.404 | 3.785 | 5.816 |
| Broad (All Levels) | 2.896 – 3.583 m/s         | 1.517 | 1.755 | 2.351 | 2.896 | 3.583 |

## Use Cases

* Trunk velocity assessment
* Power generation analysis