Training load
How Runima quantifies the stress of each session and your accumulated load over time.
Training load
Training load expresses how much physiological stress a session imposes, so you can compare an easy 10K against a hard interval workout on a single scale.
Acute vs. chronic load
Runima tracks two rolling averages:
| Term | Window | Meaning |
|---|---|---|
| Acute load | ~7 days | Recent training — your current fatigue. |
| Chronic load | ~28 days | Your established fitness base. |
The ratio between them (acute ÷ chronic) is the acute:chronic workload ratio (ACWR) — a widely studied indicator of whether you are ramping up safely or spiking into injury-risk territory.
ACWR = acute load / chronic load
< 0.8 detraining / undertraining
0.8–1.3 the "sweet spot"
> 1.5 elevated injury risk
ACWR is a guide, not a verdict. Use it alongside how you actually feel and the
readiness signals on your dashboard.