Home  /  Articles  /  Article

Return-to-Play Protocol Explained

By Dr. Neil J. Patel, MD, MBASports Neurology & Brain Injury MedicineLast reviewed: May 26, 20267 min read

After a concussion, an athlete cannot simply feel better and return to competition. Safe return follows a graduated, supervised six-stage protocol — and skipping stages is where preventable injuries happen.

The internationally accepted six-stage framework

The graduated return-to-play (RTP) framework is endorsed by the 2022 Amsterdam Consensus Statement on Concussion in Sport, used by the American Medical Society for Sports Medicine, and operationalized in nearly every professional and collegiate athletics program. The Concussion & CTE Foundation publishes athlete-friendly guidance built on the same protocol.

1. Symptom-limited activity. Daily activities that do not provoke symptoms.
2. Light aerobic exercise. Walking, stationary cycling, no resistance. Heart rate up to roughly 70% of max.
3. Sport-specific exercise. Running drills, skating, position-specific drills. Still no head impact.
4. Non-contact training drills. More complex drills, light resistance training, increasing cognitive load.
5. Full-contact practice. Following medical clearance. Functional assessment by coaches.
6. Return to play.

The cornerstones of safe progression

• Each stage requires at least 24 hours. The total minimum is 6 days. Most athletes take longer.
• Symptoms gate every transition. Recurrence at any stage drops the athlete back to the previous symptom-free level.
• Medical clearance — not parental or coach approval — authorizes Stage 5.
• Younger athletes go slower. The Amsterdam consensus and CDC guidance both note that adolescents recover more slowly than adults, and that second injuries during incomplete recovery carry catastrophic risk.

Same-day return is never appropriate

The 2017 Berlin Consensus and the updated 2022 Amsterdam Consensus are unambiguous: an athlete with any suspected concussion must be removed from play and not return the same day, regardless of how they look. A properly executed RTP protocol takes between six days and several weeks. The shortest version is not the safest. Athletes, parents, and coaches should resist any pressure to compress the timeline.

Baseline testing & neuropsychological evaluation

One of the most useful tools in return-to-play decision-making is information gathered before the injury ever happens. Baseline testing is a pre-season assessment of an athlete's normal, healthy brain function — typically covering reaction time, processing speed, memory, attention, balance, and oculomotor (eye movement) performance. When a concussion occurs during the season, the athlete can be re-tested and the results compared against their own pre-injury data rather than against population averages. That individual comparison matters: a "normal" post-injury score can still represent a meaningful decline for an athlete who started well above average, and baseline data helps clinicians catch deficits that a one-time test would miss.

Commonly used baseline and post-injury tests

• Neurocognitive tests (C3Logix, ImPACT, and CNS Vital Signs, for example). Computerized batteries that measure verbal and visual memory, visual motor speed, reaction time, and related cognitive domains, administered at baseline and again after a suspected injury to quantify change. ImPACT (Immediate Post-Concussion Assessment and Cognitive Testing) is FDA-cleared as an aid to concussion assessment; C3Logix integrates neurocognitive measures with balance and visual testing on a tablet platform; CNS Vital Signs builds standardized scores from well-established neuropsychological tests. All support baseline-to-post-injury comparison and serial tracking across a recovery.
• VOMS (Vestibular/Ocular-Motor Screening). A brief clinical examination assessing smooth pursuits, saccades, convergence, the vestibular-ocular reflex, and visual motion sensitivity, with symptom provocation rated at each step. Because vestibular and oculomotor systems are frequently disrupted by concussion — and strongly tied to prolonged recovery when they are — VOMS adds a dimension that purely cognitive tests miss.
• Rapid number/picture testing (King-Devick, MULES (Mobile Universal Lexicon Evaluation System), for example). Brief timed tests of saccadic eye movement, attention, and visual processing pathways. King-Devick uses rapid number naming; MULES uses rapid picture naming, engaging additional pathways including color perception and object recognition. Because oculomotor and visual function are frequently disrupted by concussion, a slowed time relative to baseline is a quick, objective signal that something has changed. These tests take roughly two minutes and can be administered by trained non-physicians.

Many programs supplement these with balance assessments such as the Balance Error Scoring System (BESS) and the symptom and cognitive screening components of the SCAT6, building a multidimensional baseline rather than relying on any single instrument.

The role of testing in return-to-play clearance

It is important to understand what baseline and neuropsychological testing can and cannot do. No computerized test diagnoses a concussion, and no score — by itself — clears an athlete to return. Concussion remains a clinical diagnosis, and clearance remains a clinical decision made by a qualified clinician. What testing provides is objective data inside that decision. Returning to baseline performance is one piece of converging evidence that the brain has recovered; a persistent deficit on testing in an athlete who reports feeling "fine" is a red flag that symptom reporting alone would have missed. This is particularly valuable with adolescent athletes, who are known to under-report symptoms when motivated to return to sport.

In a well-run program, neurocognitive testing is interpreted alongside the symptom trajectory, the physical examination, balance and vestibular-ocular findings, and the athlete's performance through each stage of the graduated protocol. Formal neuropsychological evaluation by a clinical neuropsychologist adds further depth in complicated cases — prolonged recovery, multiple prior concussions, pre-existing ADHD or learning disorders that complicate test interpretation, or any case where the stakes of the clearance decision are high.

Who should supervise the protocol

Graduated return-to-play works when someone owns it. In professional and collegiate settings that is typically a team physician working with athletic trainers. At the youth and high school level, supervision is more variable — which is precisely where mistakes happen. Every athlete progressing through an RTP protocol should have a designated clinician responsible for stage transitions and final clearance, and that clinician should have specific training in concussion management. State law in all 50 U.S. states requires medical clearance before a young athlete returns to play after a suspected concussion, but the quality of that clearance depends on who provides it.

For families navigating this without an athletic trainer on staff — the reality for most youth sports — the practical path is a clinician visit early after the injury to establish the plan, a symptom log kept by the athlete and parents between stages, and a follow-up evaluation before the contact stages. The protocol is simple on paper; the value of supervision is in catching the athlete who is progressing on the calendar but not in reality.