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Training-Load Monitoring (Acute:Chronic)

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DefinitionA short reference note, not a full lesson.
Definition

Quantify how much training you're doing — internally (sRPE, HR) and externally (volume, distance) — and watch how fast load is ramping relative to what you're used to.

Detail

Training load is the total dose of training stress over time. It comes in two flavors:

A widely used way to contextualize load is the acute:chronic workload ratio (ACWR): roughly this week's load ÷ the rolling ~4-week average load. The idea is that spikes in load relative to what you're adapted to are riskier than high load you've built up to gradually. A common (and debated) "sweet-spot" range is around 0.8–1.3, with ratios well above that flagged as elevated injury/overreaching risk.

Important caveat: the ACWR concept is useful as a guardrail but methodologically contested — it shouldn't be treated as a precise injury predictor. The robust takeaways survive the debate: ramp load gradually, avoid sudden spikes, and read load alongside recovery markers (HRV, RHR, readiness — see Readiness, Recovery, and Strain Scores) rather than in isolation.

Use it to:

Key facts

  • Load = external (volume/distance/time) + internal (sRPE×duration, HR load).
  • sRPE load = session RPE (0–10) × duration (min) — see cardio-rpe.
  • ACWR ≈ this week's load ÷ rolling ~4-week average load.
  • Often-cited sweet spot ~0.8–1.3; the model is debated, not a precise predictor.
  • Core takeaway: ramp gradually, avoid spikes, read with recovery markers.

Connections

Go deeperDeload Weeks

Sources

Cited in text — not yet linked
Established athlete-load-monitoring literature (Foster sRPE; Gabbett ACWR — with noted

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Educational content only — not medical advice. Always consult a qualified professional for individualized guidance, especially around injury, pregnancy, or medical conditions.

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Atlas Connections

Overtraining & Overreaching in Cardio
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Cardio RPE and Session RPEClosely related
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Logging Heart Rate (Avg / Max)
Average and max HR turn a session into an internal-load measure — how hard your cardiovascular system actually worked, independent of pace.
Readiness, Recovery, and Strain Scores
These single numbers blend HRV, resting HR, sleep, and recent load against your own baseline — useful directional nudges, but proprietary, baseline-relative, and not to be obeyed over how you feel.
Training Volume Load
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