Return-to-run readiness tests: what the evidence actually supports

What did @dr.lisa.dpt actually say?

The creator, a doctor of physical therapy, laid out five progressive tests runners should pass before returning to run/walk intervals after injury. She recommends starting with "time on feet" walking 30 to 60 minutes pain-free, then single-leg heel raises for 20 reps, single-leg squats for 10 reps, double-leg jumps for three 30-second rounds, and finally single-leg jumps for three 30-second rounds on each side. The threshold throughout is "pain free or very, very light pain." She explicitly tells viewers to stop using test runs to gauge injury status, which is solid advice that a lot of recreational runners ignore entirely.

The progression moves from low-load linear stress to single-plane strength to impact absorption, which tracks with how return-to-sport frameworks are generally structured. Nothing here is fringe or invented.

Does the science back this up?

Largely, yes. The framework she is using maps closely onto validated return-to-sport criteria used in clinical settings for lower limb injuries. The specific benchmarks she cites are reasonable approximations of what the literature supports, though they are not derived from a single universal protocol.

The single-leg heel raise as a calf/Achilles loading benchmark is well-supported. Silbernagel et al. (2010, American Journal of Sports Medicine) established that symmetrical calf endurance, typically measured with heel raises, correlates with return-to-activity outcomes in Achilles tendinopathy. A target of 20 to 25 reps is consistently cited in rehabilitation literature for this population.

Single-leg squat performance as a proxy for hip and knee neuromuscular control is backed by Crossley et al. (2011, British Journal of Sports Medicine), who showed single-leg squat quality predicts functional outcomes in patellofemoral pain. Plyometric progression from bilateral to unilateral jumping before return to run is supported by Ardern et al. (2016, British Journal of Sports Medicine) in their systematic review of return-to-sport criteria frameworks.

What did they get wrong (or right)?

The creator gets more right than wrong here. The sequencing is logical and the benchmarks are clinically defensible. That said, a few points deserve scrutiny.

First, the "very, very light pain" threshold is vague and could be risky depending on the injury. For Achilles tendinopathy, some pain during loading is tolerated within the Silbernagel et al. model, but for stress fractures, bone stress injuries, or acute ligament repairs, any pain during impact testing is a stop sign, not a yellow light. The video does not specify which injuries this protocol applies to, which matters a lot.

Second, 10 single-leg squats as a readiness criterion is on the low end. Research tends to focus more on movement quality during single-leg squats, specifically pelvic drop and knee valgus, than rep count. Ten clean reps matters more than ten sloppy ones, and the video does not address form criteria beyond pain.

Third, she does not mention limb symmetry index testing, which most clinical return-to-sport guidelines treat as the gold standard benchmark. Passing a test on the injured side without comparing it to the uninjured side leaves a meaningful gap in the assessment.

What should you actually know?

This is a reasonable, evidence-informed framework for general recreational runners returning after soft tissue injuries. It is not a substitute for individualized assessment by a physical therapist, particularly for post-surgical cases, bone stress injuries, or anyone with a history of recurrent injury.

The five-test structure reflects the core principle of return-to-sport science: progression should be load-dependent and symptom-monitored, not calendar-based. That principle is solid. The creator is also right to warn against "testing" an injury by just going for a run. That approach delays recovery and is one of the most common mistakes recreational runners make.

If you are working with a provider on a recovery plan that includes adjunct therapies, whether that is physical therapy, strength work, or other recovery tools, functional testing like this should be part of the conversation before you return to impact activity. Clearing the tissue structurally matters, but so does confirming neuromuscular readiness through exactly the kind of progressive loading she describes.