Get StartedCall
From the Lab

Lab Notes.

Training science, testing methodology, and athlete development. Written by the coaching staff at Onyx Performance Lab.

Testing · Force platesMay 2026

Rate of Force Development: why how fast you produce force matters more than how much

Most athletes train to develop force. Fewer train to develop force quickly. On a force plate these are different numbers, and the second one is the more relevant for sport.

Read Article →
Guide · Parent guideSep 2026

Youth speed: what actually improves, and when

A short, honest guide for parents: what changes speed in a 10–18-year-old, what doesn't, and how to tell the difference in six weeks.

Read Article →
Guide · Athlete guideSep 2026

What your force plate numbers mean

Jump height, peak force, RFD, asymmetry — the four numbers on your report, what each changes about your program, and which ones are worth chasing.

Read Article →
Guide · Member guideSep 2026

Your first month at Onyx

What to expect from the first free class to week four: how classes are built, how to read the app, and what changes first.

Read Article →

Two Lab Notes a month from here on: testing methodology, training science, athlete development. The guides above are free to read after you leave an email.