calculate-recovery-readiness

name	calculate-recovery-readiness
description	Use when a coach or athlete needs to objectively measure an athlete's recovery status before a training session — to decide whether to train as planned, reduce load, or rest based on physiological and subjective readiness indicators.
source	Halson (2014) "Monitoring Training Load to Understand Fatigue" (Sports Med); Buchheit (2014) "Monitoring Training Status with HRV" (Sports Med); Saw et al. (2016) "Monitoring the Athlete Training Response" (Sports Med)
tags	["recovery","readiness","hrv","training-load","monitoring","fatigue","athlete-monitoring"]

Calculate Recovery Readiness

Measure and interpret an athlete's daily recovery status using a combination of objective (HRV, resting HR, body mass) and subjective (wellness scales) indicators to make evidence-based training load decisions.

Why This Is Best Practice

Why best: Combining objective (HRV, RHR) and subjective (wellness, RPE) readiness indicators, interpreted against individual baselines, catches accumulating fatigue before it causes performance regression or injury — outperforming either monitoring type alone or no monitoring at all. Adopted by: Rugby Australia, New Zealand All Blacks, EPL clubs, Olympic endurance programs, and many professional sports organizations use daily wellness and HRV monitoring as the basis for individual training load modification. Apps and platforms (HRV4Training, WHOOP, Training Peaks, FirstBeat) provide athlete monitoring systems used by millions of athletes globally. Impact: Halson (2014) review in Sports Medicine established that monitoring training load — both external (volume, intensity) and internal (HR response, HRV, RPE) — enables coaches to identify accumulating fatigue before performance regression or injury occurs. Saw et al. (2016) found that subjective wellness measures were as sensitive as objective measures in detecting training-induced fatigue in elite athletes, and combined subjective+objective monitoring outperformed either alone. The cost of training a fatigued athlete is lower adaptation and higher injury risk.

Steps

1. Select the monitoring tools

Choose 2-3 measures from the following, balancing accuracy, practicality, and athlete compliance:

Objective measures:

• Heart Rate Variability (HRV): most researched objective recovery marker; measure resting supine (waking), 60 seconds, same time daily; RMSSD is the most reliable parameter; individual trend matters more than population norms
• Resting Heart Rate (RHR): elevated >5-7 bpm above individual baseline = significant fatigue signal
• Body mass: >2% reduction from 7-day average morning weight indicates residual dehydration
• GPS/accelerometer load: acute:chronic workload ratio; ACWR >1.5 correlates with injury risk

Subjective measures (most practical, well-validated):

• Simple wellness questionnaire (Hooper Index or equivalent): 4 items (sleep quality, fatigue, muscle soreness, stress) each rated 1-7; total score >20 = concern
• Session RPE (sRPE): Rate of Perceived Exertion × session duration = internal load estimate per session; compare to planned load
• Mood/motivation: single-item "How motivated are you to train today?" (1-10); <6 is a significant signal

2. Establish individual baseline

Recovery markers are individual — population norms are less useful than the athlete's own baseline:

• Collect 7-14 days of resting data during a low-stress, well-recovered period (early off-season, rest week)
• Calculate individual baseline HRV and RHR
• All subsequent readings are interpreted relative to this baseline, not published norms

Build baseline in the first week of a new training block or return from off-season.

3. Interpret daily readiness scores

Create a simple traffic light system:

Green (train as planned):

• HRV within ±5-8% of 7-day rolling average (CV-adjusted)
• RHR within 5 bpm of baseline
• Wellness score ≥18 (Hooper) or equivalent
• Body mass within 1% of baseline

Yellow (train with modification):

• HRV 5-15% below rolling average
• RHR 5-10 bpm above baseline
• Wellness score 14-18
• Athlete subjective readiness 6-7/10

Red (rest or recovery session only):

• HRV >15% below rolling average
• RHR >10 bpm above baseline
• Wellness score <14
• Multiple indicators simultaneously depressed

4. Make the training modification decision

Based on the traffic light classification:

• Green: execute the planned session
• Yellow: reduce session volume 20-30%, maintain intensity; monitor during session; stop if performance deteriorates
• Red: active recovery only (low-intensity walk, swimming, mobility); no high-intensity or high-volume training

The decision must be made before the session, not reactively during it. Monitoring is only useful if it drives action.

5. Implement monitoring consistently

Monitoring only works if it is consistent:

• Measure at the same time each day (immediately on waking, before fluids or caffeine)
• Use the same conditions (supine, quiet, same device)
• Track data in a simple spreadsheet or app (HRV4Training, TrainingPeaks)
• Coach reviews team data daily in a dashboard view (if team sport)

Compliance decreases as protocol complexity increases. Choose the minimum effective monitoring battery.

6. Integrate with training load data

The most powerful readiness interpretation is when recovery indicators are matched with recent training load:

• High load last week + depressed HRV this week = expected accumulated fatigue; may not indicate illness
• Depressed HRV with normal or low load = potential illness, overreaching, or lifestyle stress; investigate

Check the training log before interpreting the readiness score.

Common Mistakes

• Using population norms instead of individual baselines: HRV of 50ms is high for one athlete and low for another. Only individual trends are meaningful.
• Monitoring without acting: If readiness data is collected but training is never modified, the monitoring is theater. Define in advance what action each color triggers.
• Single-day decision from one variable: No single readiness indicator is reliable in isolation. A yellow HRV day with a 9/10 subjective motivation = different interpretation than yellow HRV with 4/10 motivation.

When NOT to Use

• Monitoring is not a substitute for periodization — it is a fine-tuning layer on top of a planned training program. Do not remove planned periodization because daily monitoring exists.