ImPACT Test vs Buffalo Concussion Treadmill Test: Why Your Athlete Needs Both

Written by Dr. Rob Letizia, PT, DPT - serving concussion patients and athletes across Wayne NJ and North Jersey.

Two of the most common tools in modern concussion management are the ImPACT Test (Immediate Post-Concussion Assessment and Cognitive Testing) and the Buffalo Concussion Treadmill Test (BCTT). Both are valuable. They measure completely different things. And using the wrong one or - more commonly - only using one of the two leaves significant gaps in an athlete's concussion rehabilitation.

Here is what each test does, what it does not do, and why your athlete probably needs both.

What the ImPACT Test Measures

ImPACT is a computerized neurocognitive test developed at the University of Pittsburgh. It measures verbal and visual memory, processing speed, and reaction time. Many high school and college athletic programs have their athletes complete a baseline ImPACT before the season starts, then re-test after any concussion to compare.

ImPACT is excellent for:

• Objective measurement of cognitive function after concussion
• Comparing current performance to pre-season baseline
• Tracking cognitive recovery over time
• Supporting return-to-learn and return-to-play decisions with cognitive data

ImPACT does NOT measure:

• Vestibular or balance function
• Cervical spine dysfunction
• Autonomic nervous system / exercise tolerance
• Ocular-motor (eye teaming) function

What the Buffalo Concussion Treadmill Test Measures

The BCTT is a graded exercise test performed on a treadmill with continuous heart rate and symptom monitoring. It identifies exertional intolerance - the most common driver of persistent post-concussion symptoms in athletes who feel "fine at rest."

The BCTT is excellent for:

• Identifying autonomic nervous system dysfunction
• Establishing the exact heart rate at which symptoms appear (symptom threshold HR)
• Prescribing sub-symptom-threshold aerobic training - the research-validated intervention that accelerates recovery
• Measuring progress objectively as the athlete recovers
• Supporting return-to-play decisions with exertional tolerance data

The BCTT does NOT measure:

• Cognitive function (memory, processing speed, reaction time)
• Cervical spine dysfunction directly (though HR dysregulation can be partially cervical-driven)
• Ocular-motor function directly

Why Most Athletes Need Both Tests

Here is the scenario that plays out constantly in my practice:

A high school athlete has a concussion. They complete their baseline ImPACT in August and re-test after injury. Their scores recover to baseline within 2 weeks. Their pediatrician clears them to return to play. They go back. They cannot get through a practice - dizziness, headache, fatigue flare up within 15 minutes of exertion. They are told to rest more. They rest. They try again. Same result.

Why? Because ImPACT measured their cognitive recovery - which was fine - but never tested their exertional tolerance. The autonomic dysfunction that was limiting their exercise ability was never identified, let alone treated.

The opposite scenario also happens: an athlete passes their BCTT with flying colors but still cannot concentrate in class or complete homework because of persistent cognitive symptoms ImPACT would have flagged.

Both tests together give a complete picture. Either test alone leaves critical gaps.

How They Work Together in Rehabilitation

In an ideal concussion recovery program:

1. Baseline ImPACT is collected before the season (by your school or team provider)
2. After concussion, ImPACT re-test measures cognitive recovery
3. BCTT at Spectrum Therapeutics identifies exertional intolerance and prescribes sub-symptom-threshold aerobic training
4. Vestibular/cervical/ocular-motor testing rounds out the 4-domain framework
5. Return-to-play decision incorporates all four data streams, not just one

The Bottom Line

If your athlete only did ImPACT and was cleared but still feels off, you are missing half the picture. If your athlete is doing the BCTT but no one is tracking their cognitive recovery, same problem. A comprehensive concussion program uses both - along with cervical and ocular-motor assessment - to give your athlete the best shot at full recovery.

Learn more about Spectrum Therapeutics' complete 4-domain post-concussion program.