https://www.ahajournals.org/doi/epdf/10.1161/01.CIR.80.3.564
.
The total study population of nonathlete HCM patients
(n = 194, 50.2±13.6y, 108 male, body surface area (BSA) = 2±0.17 m2), healthy athletes (n = 150, 24.2±4.8y, 101 male, BSA = 1.92±0.19 m2) and athletes with HCM (n = 10, 31±10y; 9 male, BSA = 1.94±0.19 m2) were examined by CMR
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6375568/
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Of the 4111 study subjects, 7 (0.17%) were identified as having probable or definite echocardiographic evidence for HCM (the Table). The 95% CI for this prevalence was 0.07% to 0.35%.
The 7 subjects with HCM (4 black men, 1 black woman, 1 white man, and 1 white woman) were 25 to 33 years of age at the time of the echocardiographic study. The frequency of HCM was 5 in 1913 (0.26%) in men, 2 of 2198 (0.09%) in women, 5 in 2081 (0.24%) in blacks, and 2 in 2030 (0.10%) in white
https://doi.org/10.1161/01.CIR.92.4.785
.
Of the 33,735 athletes initially screened, 3016 (8.9 percent) were referred for echocardiographic evaluation because of the family history, abnormal physical findings, or electrocardiographic abnormalities. Twenty-two (20 male and 2 female athletes; mean age, 20±4 years; range, 16 to 28)
DOI: 10.1056/NEJM199808063390602
.