Many owners and riders live with the belief that if a horse loads into the trailer without trouble, does not kick the walls, and stands still inside, then transport is not a problem for it. In the equestrian world, it has become common to assume that such a “well-behaved” passenger is simply not stressed. Science, however, sheds a completely different light on this phenomenon. What we interpret as calmness is often only a mask hiding profound physical and mental exhaustion.

For a sport horse, transport is not just logistics, it is the first stage of competition, and it may determine the result in the jumping arena or the dressage ring.

When calm is not relaxation: the “freeze” response

As prey animals, horses have developed specific defense mechanisms. When they cannot escape from a stressor, such as confinement in a trailer, noise, and vibration, they may enter a state of learned helplessness. This is a kind of psychological “shutdown”, the animal stops reacting to stimuli because it has learned that its actions will not change the situation.

Another dangerous state is tonic immobility, a form of fear paralysis. The horse stands stiffly, with tense muscles and a fixed gaze, which an inexperienced observer may mistake for patience. In reality, its body is in a state of maximum alarm, flooded with cortisol, the stress hormone, whose level remains elevated throughout the journey and long after it ends.

Look into the eyes - a scientific indicator of stress

How can you tell the difference between a truly relaxed horse and one experiencing a “silent drama”? The latest research points to the eyes.

• Blinking: A relaxed horse blinks on average 8–9 times per minute. Under transport stress, this number drops to as few as 5 blinks.
• Eyelid twitches: Although the horse blinks less often, the upper eyelid begins to twitch nervously, increasing from about 2 times per minute at rest to 6 times under stress.
• Worry wrinkles: Characteristic “worry wrinkles” appear above the eye as a result of facial muscle tension.

If your horse has wide-open eyes in the trailer and barely blinks, do not be fooled, its nervous system is working at the very edge of endurance.

The physical cost of “standing still”

Transport is a demanding isometric workout for a horse. In order to maintain balance in a moving vehicle, the horse must constantly adjust the tension in its postural muscles.

1. Energy expenditure: It is estimated that 1 hour of transport costs a horse as much energy as 1 hour of walking. A longer journey is, for the body, a marathon.
2. Muscle damage: After travel, horses show elevated muscle enzymes in the blood, such as CK and AST, which is evidence of microdamage to muscle fibers and accumulated fatigue.
3. Internal health: Transport stress is a major risk factor for gastric ulcers, which may begin developing after just 4 hours of travel, as well as for so-called shipping fever, a bacterial pneumonia caused by the inability to lower the head freely and clear the airways.

The champions’ strategy: Hempqualizer Compete

For sport horses, recovery is everything. If a horse arrives at a competition physically exhausted and emotionally drained, it will not be able to perform at 100 percent. That is why we created Hempqualizer Compete.

It is a solution designed with top-level sport in mind, where there is no room for compromise:

• No hemp, no doping: The Compete formula is completely free of substances prohibited by the FEI and other federations. You can use it with complete peace of mind immediately before transport and during competitions.
• Stability without dullness: Unlike sedatives, Compete does not make the horse sluggish. Its purpose is neurostabilization, helping to maintain mental clarity while reducing the excessive hormonal reaction to stressors.
• Protecting resources: By supporting the nervous system, the horse uses less energy fighting fear, which translates into better quality of movement and greater focus on the rider’s aids after unloading.

How to minimize the cost of travel: practical tips

In addition to supplementation with Hempqualizer Compete, it is worth implementing proven protocols:

• The 2:3 rule: For every 3 hours of travel, a horse needs at least 2 hours of rest before doing any work.
• Direction matters: If possible, position the horse facing backward in the direction of travel, studies confirm that in this position horses maintain balance more easily and have a lower heart rate.
• Hydration is key: Offer water with electrolytes before and after the journey. If the horse is reluctant to drink in a new place, add a small amount of apple juice to the water, start doing this 2 days before departure so the horse becomes familiar with the taste.
• Movement after arrival: After unloading, allow the horse to lower its head freely and take a calm walk, which helps clear the airways and loosen tense muscles.

Summary

True welfare for the sport horse begins where our reliance on appearances ends. The “quiet passenger” needs your support just as much as the one that loudly expresses its fear. By using Hempqualizer Compete, you give your horse the chance to travel in genuine comfort, protecting its muscles, stomach, and mind. Because victory in the arena begins with a successful journey.

Key Publications and Research:

1. Schmidt A. et al. (2010). Analysis of salivary cortisol levels and habituation in horses to repeated road transport. The study indicates a slow habituation process (approx. 10 exposures) and the occurrence of sudden stress hormone spikes even in experienced individuals.
2. Padalino B. et al. (2017/2020). The impact of transport on heart rate variability (HRV), the development of gastric ulcers, and the correlation between loss of balance and muscle damage.
3. Merkies K. et al. (2019). Spontaneous blink rate (SBR) and eyelid twitches as a non-invasive measure of stress in domestic horses. The University of Guelph proved a decrease in the number of blinks from 8–9 to approx. 5 per minute in stressful situations.
4. Lundblad J. et al. (2021). The effect of transport and social isolation on equine facial expressions (EquiFACS). The study identifies so-called "worry wrinkles" (AU101) and nostril tension as indicators of distress.
5. Waran N. K. et al. (2008). A study on the phenomenon of learned helplessness in horses in the context of training and transport.
6. Smith et al. (1996). Comparison of forward-facing vs. rear-facing transport in horses—demonstrating lower heart rates and greater calmness in the rear-facing position.
7. Tateo et al. (2012). Development of recovery indicators after transport exertion, suggesting a ratio of 2 hours of rest for every 3 hours of travel.
8. Heidmann P. (2022). Pathophysiology of shipping fever and the importance of head movement freedom for airway clearance.
9. Fielding C. L., Magdesian K. G. (2024). Changes in electrolyte concentrations and hydration status in endurance horses prior to competition.
10. Takasawa T. et al. / Connysson et al. Research on muscle enzyme activity (CK and AST) as biomarkers of fatigue and muscle tissue micro-injuries.
11. Grandin T. (1997). The impact of handling and transport methods on the welfare and performance of livestock and sport animals.
12. Munsters C. (2014). Stress dynamics during loading and long-distance flights in sport horses.
13. Schmidt et al. (2010/2024). Studies on the impact of transport on endocrine parameters (ACTH, insulin) and the risk of false-positive diagnoses for metabolic diseases.

Additional Physiological Indicators:

Estimated energy expenditure of transport (1h of travel = 1h of walking) based on heart rate monitoring and postural muscle work.

Recovery time for AST enzyme levels to return to baseline (up to 8 days) and cortisol (up to 24–48h after travel $>12h$).

Correlation between transport stress and a decrease in intestinal motility (reduction of gastrointestinal sounds).