The video · explainer

How to read a training study

Name: How to read a training study — the video
Uploaded: 2026-08-20T14:00:00+02:00
Duration: 5 min 9 s
Description: Seven questions that tell you how far a training study travels: who was in it, how many, how long it ran, what it was compared with, what was measured, how big the difference was, and whether it would have been published if it had found nothing. Five minutes, no statistics.

A training study is built out of about seven choices, and every one of them is written down in the paper. Once you can see them, you can tell how far a finding travels. Five minutes, narrated, and no statistics required.

5:09 · 1920×1080 · English subtitles you can switch off Download the MP4

Every number in this video is traced to a source in the full write-up: read the complete explainer — nine sources, thirteen figures, and the fine print a video can't carry. Where something is our own estimate rather than a measurement, we say so.
Want to put a percentage into seconds? The free calculators — pace, race predictor, heart-rate zones, climbs and aero — each show the formula they use.
Music: “Carefree” — Kevin MacLeod (incompetech.com), licensed under CC BY 4.0.