[bluedino]

Genetics probably play the biggest role when it comes to natural abilities. Height, strength, explosiveness, body proportions, endurance.

[AlexandrB]

This is inconsistent with the fact that average height has increased significantly over the last two centuries[1]. Our genes have not had time to change in that span, but our environment, including access to nutrients, has changed radically.

[1] https://ourworldindata.org/human-height

[bluedino]

Taller than average people are most successful in certain sport. Basketball, volleyball, etc

Shorter than average are very rare in most sports except for some niche positions.

[achenet]

gymnastics and olympic weightlifting actually both favor shorter statures.