In this guide
Begin with the reason running stopped
A person returning after deconditioning faces a different decision from someone recovering from a tibial bone stress injury or ACL reconstruction. The diagnosis, treatment, healing constraints, medical history, and intended running demands determine what needs to be examined.
Clarify who is guiding the return and which restrictions still apply. Being able to complete one run does not establish the ability to tolerate repeated sessions, faster running, hills, or the volume of previous training.
Understand the limits of common criteria
The Aspetar ACL rehabilitation guideline proposes a combination of symptom, motion, strength, and loading criteria for returning to running. Its authors also identify a lack of research validating those proposed criteria.[1] The framework combines evidence and clinical expertise in a specific surgical population.
A review of return after tibial bone stress injury identified five areas to assess: pain-free walking, local bony tenderness, strength and loading tests, contributing factors, and imaging evidence of healing for high-risk injuries. A clinician interprets those findings together. The recommendations came largely from lower-level evidence, and no included study directly compared return-to-run approaches.[2]
A proposed “90% symmetry,” “25 calf raises,” or “10% per week” rule needs a diagnosis and testing method attached to it. Ask which population a criterion came from, how it was measured, and whether it has been validated for the decision being made.
Prepare an injury and training history
| Topic | Bring or ask |
|---|---|
| Diagnosis and restrictions | What tissue or condition is being managed? What remains restricted? |
| Daily function | Current walking and stair tolerance, swelling, and relevant symptom behavior |
| Physical capacity | Which strength or loading assessments are appropriate for this injury? |
| Previous running | Usual distance, frequency, speed, terrain, and recent changes |
| Recovery and health | Sleep, nutrition, other training, work demands, and relevant health factors |
| Next exposure | An agreed starting structure and criteria for repeating, changing, or stopping |
Discuss a run–walk starting plan
Where clinically appropriate, a run/walk format can separate exposure from continuous duration. The exact intervals, pace, surface, and frequency should follow the individual plan. Do not copy a tendon pain allowance into a bone-injury programme. Suspected bone stress injury should not be tested by repeated hopping at home.
Record the activity completed and the response afterward. A rise in symptoms, swelling, or declining function may call for reassessment rather than a smaller version of the same progression. Bone stress injuries also require attention to site risk and contributing factors. One factor may be energy availability: the energy left for body functions after exercise demands are accounted for.
Rebuild the intended running demands
Duration, frequency, speed, hills, and terrain are separate demands. Holding some steady helps make the effect of a change clearer. Return to a comfortable easy run is different from readiness for intervals, trail descents, competition, or another sport.
Review the pattern across exposures with the professional guiding care. A reassuring score on one test does not erase the rest of the history, and a successful first week is only one stage of the return.
Ask one question before borrowing a protocol
“What makes this protocol appropriate for my diagnosis, current capacity, and goal?” A good answer should identify the relevant evidence, the parts based on judgment, and the findings that would change the plan.
References and evidence
- Aspetar · Rehabilitation after ACL reconstruction: clinical practice guideline (2023)
Proposed return-to-running criteria include expert judgment; the authors identify a lack of research validating those criteria.
- George et al. · Return to running after tibial bone stress injury (2024)
Scoping review with mainly low-level evidence. Injury risk, healing, and contributing factors change the plan.