Table 4

Recommendations for the Acceptability of Recreational (Noncompetitive) Sports Activities and Exercise in Patients With HCM

Intensity LevelEligibility Scale for HCM
 Basketball (full court)0
 Basketball (half court)0
 Body building1
 Ice hockey0
 Rock climbing1
 Running (sprinting)0
 Skiing (downhill)2
 Skiing (cross-country)2
 Tennis (singles)0
 Touch (flag) football1
 Modest hiking4
 Swimming (laps)§5
 Tennis (doubles)4
 Treadmill/stationary bicycle5
 Weightlifting (free weights)1
 Brisk walking5
 Horseback riding3
 Scuba diving§0
 Weights (nonfree weights)4

Adapted with permission from Maron et al. (224).

  • Recreational sports are categorized according to high, moderate, and low levels of exercise and graded on a relative scale (from 0 to 5) for eligibility, with 0 to 1 indicating generally not advised or strongly discouraged; 4 to 5, probably permitted; and 2 to 3, intermediate and to be assessed clinically on an individual basis. The designations of high, moderate, and low levels of exercise are equivalent to an estimated >6, 4 to 6, and <4 metabolic equivalents, respectively.

  • Assumes absence of laboratory DNA genotyping data; therefore, limited to clinical diagnosis.

  • These sports involve the potential for traumatic injury, which should be taken into consideration for individuals with a risk for impaired consciousness.

  • § The possibility of impaired consciousness occurring during water-related activities should be taken into account with respect to the individual patient's clinical profile.

  • Recommendations generally differ from those for weight-training machines (nonfree weights), based largely on the potential risks of traumatic injury associated with episodes of impaired consciousness during bench-press maneuvers; otherwise, the physiologic effects of all weight-training activities are regarded as similar with respect to the present recommendations.

  • Individual sporting activity not associated with the team sport of ice hockey.