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Distance-runner bone-risk screen
Distance RED-S &
Stress Fractures
For coaches, parents, and distance runners
Distance runners often hide RED-S through mileage pride until bone pain, recovery failure, and body-pressure language start clustering together.
Evidence-basedCoach-safeReferral requiredNot diagnosticCitations on sheet
Mileage only helps when the athlete is fueled well enough to absorb it.
Low Risk (Green)
Steady mileage, regular meals, and no bone or body-pressure signal.
Action: keep normal fueling and recovery habits visible during mileage growth.
Moderate Concern (Yellow)
Bone pain, persistent fatigue, or obvious restriction starting to travel together.
Action: refer this week and reduce load while the athlete gets evaluated.
High Risk (Red)
Stress-injury concern, rapid weight loss, fainting, or a hard collapse in recovery and training function.
Action: stop training and move to same-day medical guidance.
Risk Clusters
Bone + Recovery
- Localized pain or repeated stress-injury history.
- Runs feel harder while recovery keeps getting worse.
- The athlete never really bounces back between key sessions.
Fueling + Body Pressure
- Meal skipping, carb fear, or visible pressure to stay lighter.
- Guilt after normal meals or praise-seeking around restriction.
- Notable weight loss during high training phases.
Team Context
- Mileage or performance identity is tied to eating less or staying small.
- Cycle concerns, low iron history, or repeat illnesses are already present.
- Parents or trainers are worried but the athlete keeps minimizing it.
Immediate Referral TriggersRefer to athletic trainer or physician today if you notice:
Bone pain plus low-energy-availability clues
Rapid weight loss during distance training
Repeat stress fracture or menstrual disruption with fatigue
Fainting or inability to finish normal easy running
What Not To Say
- Do not praise smaller bodies when bone or fatigue risk is already showing.
- Do not call the athlete mentally weak if they cannot absorb the current load.
- Do not keep mileage high just because the athlete insists they are okay.
Coach Action Steps
- 1Name the cluster early instead of waiting for a formal RED-S label.
- 2Reduce training load when bone or severe fatigue flags are showing.
- 3Loop in family, ATC, and sports medicine support without debating body composition.
- 4Keep the tone performance-and-health focused, not punitive.
Need more family support?
Scan to join the free Aspire Runner Fueling Lab.
https://aspireperformancerd.com/runner-fueling-lab?source=handout-relative-energy-deficiency-and-stress-fractures-in-distance-runners-print