Preparing for and competing in the heat: the human perspective.

This research review explores the strategies both humans and horses use to adapt to exercising in high heat, aiming to leverage solutions from human athletes for use in equine sports due to their physiological similarities. However, challenges like a horse’s lower surface area to body mass ratio and the high metabolic capacity of equine skeletal muscle make heat dissipation during exercise in hot conditions more problematic and complex.

Understanding Exercise in the Heat

• Exercising in the heat presents significant challenges for both humans and horses. The body’s need to regulate its temperature often clashes with the high metabolic demands of exercise, leading to stress and potential health risks
• The review looks at how these issues are managed by human athletes, with the goal of applying some of the same strategies to horses

Similarities Between Human and Equine Physiological Responses

• Humans and horses have many similarities when it comes to how their bodies react to exercise in the heat. These similarities make it possible that strategies used by human athletes could potentially be applied to horses
• The factors studied include training techniques, fluid replacement strategies, and heat acclimatisation approaches. These methods help the body manage the heat and replenish the depleted resources, allowing for continued performance

Differences Between Humans and Horses

• Despite the similarities, there are crucial differences between humans and horses that affect their ability to handle heat. These differences must be considered when looking for solutions to help horses exercise in the heat
• The major differences highlighted by this review are the horse’s lower surface area to body mass ratio and the high metabolic capacity of the horse’s skeletal muscle. These two factors make it particularly challenging for horses to dissipate heat when exercising in hot conditions

Importance of Specific Equine Differences

• The review underlines particular differences in horses that must be taken into account when formulating strategies for exercising in the heat. While humans may be able to adapt through training and other strategies, horses have physical barriers that need more specialized approaches
• By examining the issue from both a human and equine perspective, the review aims to improve understanding of the challenge and to propose more efficient strategies for horses participating in sports in high heat conditions