A recent study published in the Journal of Human Kinetics has focused on infrared thermography in Masters athletes to understand how high-intensity exercise modulates the physiological response over time.

The research, conducted during the European Masters Athletics Indoor Championships, analyzed 148 male athletes divided into three age categories: 35 to 45 years, 50 to 65 years, and over 70 years. The main objective was to determine whether age-related changes affect the ability to dissipate heat and redistribute blood flow after maximum exertion during competition.

The methodology employed was notable for its rigor under field conditions. Researchers applied the RAMP protocol during warm-up and performed thermal imaging of the lower limbs at two critical moments: at rest after an acclimatization phase and exactly five minutes after the race. Specific regions of interest, such as the rectus femoris, biceps femoris, gastrocnemius, and tibialis anterior, were monitored, ensuring anatomical accuracy through physical markers placed by specialists.

The results revealed a fascinating phenomenon: only the youngest group (35-45 years) showed statistically significant thermal changes, characterized by a decrease in skin temperature in key muscles such as the rectus femoris (Δ = -0.63°C). This surface cooling is interpreted as an efficient redistribution of blood flow, where the body prioritizes perfusion of active muscles over the skin periphery. Conversely, in the older groups, these variations were much more subtle and did not reach statistical significance, suggesting remarkable thermal stability despite the aging process.

One of the most relevant conclusions for sports science is that long-duration training appears to act as a protective factor that mitigates the deterioration of thermoregulatory mechanisms. While in the general population the sweating threshold increases and cardiovascular efficiency declines drastically after age 40, the Master athletes in the study demonstrated thermal homeostasis and limb symmetry that contradicts the patterns of sedentary aging. Their athletic history, with an average of 18 years of experience among the participants, thus emerges as key to preserving capillary density and the responsiveness of thermal receptors.

Finally, the study underscores that thermography is not only a clinical diagnostic tool but also a strategic ally for performance monitoring and injury prevention in veteran athletes. The absence of significant thermal asymmetries across all ages analyzed suggests that systematic training helps maintain the functional integrity of the musculoskeletal system. These findings reinforce the idea that competitive sport is one of the most effective tools for achieving successful aging, allowing the body to continue responding with metabolic efficiency to highly demanding physical challenges.

Bibliography

Adamczyk, J. G., Michalak, B., Gutkowski, Ł., Bałdyka, J., Sillero-Quintana, M., Boguszewski, D., Gryko, K., Mikołajec, K. & Kopiczko, A. (2026). Thermal Responses to Exercise in Male Master Track & Field Athletes: Monitoring during Competition. Journal of Human Kinetics, 101, 227–243. https://doi.org/10.5114/jhk/218447