The research is unambiguous. A study of 750 horses at FEI competitions found that 44 per cent were presented with noseband tightness of zero fingers — no space between the noseband and the horse's jaw. Only 7 per cent were correctly fitted by the FEI's own standard of two fingers. Pressure measurements on tightly fitted nosebands ranged from 200 to 400 millimetres of mercury — above the 250 mmHg threshold at which a tourniquet causes pain in humans.
Post-Inhibitory Rebound
Post-inhibitory rebound is documented in the research literature. Remove a tight noseband from a horse that has been wearing it and the horse's first response is typically to open its mouth, move its jaw, attempt to chew or yawn — to do everything the noseband prevented it from doing. This is the expression of everything the equipment suppressed. The horse was not relaxed. It was prevented from communicating its discomfort.
The double bridle — compulsory at FEI level — causes measurable physiological stress in horses at rest, before the rider picks up the reins. Research using thermal imaging and cortisol measurement has documented this. The bit in the horse's mouth is not a neutral presence.
What the Submission Score Actually Rewards
The FEI submission score rewards, in its written criteria, the horse's acceptance of the bit, the freedom of the jaw, and the horse's willingness. In practice, judges reward a quiet mouth.
A horse that opens its mouth is penalised — the open mouth is considered a sign of resistance, tension, or incorrect training. A horse whose jaw is prevented from opening by a crank noseband cannot open its mouth. Its mouth is quiet. Its submission score benefits.
This is not a design flaw in the scoring system. It is its logical outcome. A system that rewards quiet mouths and provides equipment that enforces mouth silence will produce horses with quiet mouths — horses that are silent not because they are relaxed but because they have been prevented from speaking.
What Fillis Understood in 1890
Fillis understood the distinction. He wrote that the mouth he valued was the mouth that was fresh — neither dry nor wet — responsive to the lightest contact and capable of genuine relaxation of the jaw. This is categorically different from the mouth held shut by a noseband tightened to tourniquet pressure.
135 years of clear thinking about what a horse's mouth should do. A sporting culture that rewards the opposite. The equipment that makes that reward possible. This is not confusion. It is a system working exactly as its incentive structure designed it to work.