Sport specialization requires an understanding of morphological variability to optimize performance. However, the current literature lacks a detailed analysis of the anthropometric profile of track and field athletes, especially in Latin America. Additionally, the five-way fractionation method of body mass has been under-documented. These gaps highlight the need for more research to maximize the potential of athletes, particularly in emerging countries like Mexico. This study aims to determine the anthropometric characteristics of elite and Olympic Mexican track and field athletes. A descriptive cross-sectional study will be conducted. Forty-three anthropometric variables will be assessed to characterize the athlete´s physical composition using the standards of the International Society for the Advancement of Kinanthropometry (ISAK). Those variables will be used to describe the anthropometric profile (Heath and Carter somatotype, body composition through five-way fractionation method, muscle bone index, muscular adipose index, sum of skinfold thicknesses, and proportionality through Ross & Wilson Phantom strategy. Correspondences of those variables will also be established among different tests and specialties: sprint, middle-distance, long-distance, endurance, combined events, jumps, and throws. This study aims to provide the opportunity to generate reliable references for high-performance Mexican athletes.

Inclusion Criteria:

• Elite and Olympic Mexican track and field athletes
• Female and male,
• All national teams
• Actively competing in national and/or international competitions

Exclusion Criteria:

• Injured or not classified athletes
• Not informed consent signed

Elite and Olympic Mexican track and field athletes from different national teams and actively competing in national and international competitions

Because the participants were informed that data management would be protected only by the principal investigators.