New Bolton Center Kennett Square, PA
Emergencies & Appointments:
Ryan Hospital Philadelphia, PA

Treadmill Evaluation

Dedicated in 1993, New Bolton Center clinicians were pioneers in the use of the high-speed treadmill. It can hit speeds of up to 45 miles per hour, which makes it ideal for evaluating racehorses. It can also be used for sport horses, draft horses, and ponies—any horse that needs assessment while exercising.  

Examination during treadmill exercise allows us to instrument and evaluate the horse while trotting, pacing, or galloping, looking at multiple body systems all at once: heart, upper airway, lungs, and musculoskeletal systems.

Treadmill testing includes:

  • Exercising upper airway endoscopy
  • Exercising electrocardiogram (ECG), to measure heart rate and rhythm
  • Echocardiogram, an ultrasound of the heart
  • Arterial blood gas analysis – New Bolton Center is one of the only equine clinics in North America that conducts exercising arterial blood gas analysis on a treadmill, using catheters to obtain multiple samples to measure blood oxygen levels.
  • Bronchoalveolar lavage (BAL), fluid analysis from the lungs
  • Electrolyte, muscle enzyme, and lactate analysis

Contact Sports Medicine

  • Appointments: 610-925-6122
  • Emergencies: 610-444-5800

New Bolton Center
382 W. Street Rd.
Kennett Square, PA 19348

Estimated time for completion of service

High-speed treadmill evaluation can be completed on an outpatient basis and the typical appointment lasts 5-8 hours. Laboratory data may require several days for completion.


Horses should be sound and fit, preferably training at the level during which the performance problem occurs.  To exercise on the treadmill, horses must be shod with four flat shoes (no toe grabs, heel caulks, borium, etc.).  Where appropriate, please bring your horse’s harness or other tack.  Please bring details of previous examinations, imaging and treatments with you to the appointment.

Appointment / Referral information

  • Referral by your veterinarian is recommended but not required.
  • For information or to schedule an appointment, please call 610-925-6122 or email at