HORSE GYM USA® | Innovative Equine Treadmills and Therapeutic Equipment equestrian treadmill, equine treadmill, water treadmill, aqua tread, equestrian training equipment, equine therapeutic equipment, horse gym, horse gym 2000, aqua trainer, activo med HORSE GYM USA® is North America's premier retailer for equine rehabilitation and conditioning equipment. Based in Wellington, Florida since 2004, HORSE GYM USA® is proud to launch a new line of products which now includes a Cold-Saltwater Spa, Massage Floor, Solarium, and a vastly upgraded Water Treadmill.