Glossary · Training load and racing

Tapering

In plain English

Cutting training back in the days or weeks before a key race so fatigue clears while fitness holds. Most of the evidence favours cutting volume, not intensity.

Also called: Taper

What it is

A taper is a planned reduction in training before an important event. The goal is to shed accumulated fatigue while keeping the fitness you’ve built.

What the research says

A 2007 meta-analysis by Bosquet and colleagues, covering 27 studies of competitive athletes, found the largest performance gains with:

These are averages across the studies included. The best taper for you depends on how much you’ve been training, how tired you are and how long your event is.

Why it matters for training decisions

The common mistakes are not cutting back enough because you’re worried about losing fitness, or cutting intensity as well as volume. Keeping some short, sharp efforts while reducing volume is the pattern the evidence supports.

In a load chart, a taper shows as fatigue (ATL) dropping faster than fitness (CTL), so form (TSB) rises.

Limits

Feeling sluggish early in a taper is common, and recovery scores may swing around as your routine changes. Pre-race nerves, travel and sleep in a strange bed can move overnight data too.

How P247 uses it

If you set an event, the weekly report knows how many weeks out you are and frames next week’s call around it. AI goal plans can also build a plan towards your event date if you turn on AI features.

This glossary is general information to help you understand your training data. It isn't medical advice, diagnosis or treatment. For injury, illness, medication, blood test results or any health concern, speak to a qualified health professional.

P247 turns your Apple Health data into a daily brief and a weekly report that tells you what to change next week. Launching on the App Store at the end of November 2026. Your first weekly report is free.

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