noun
athlete's heart
Medical term for the benign cardiac adaptations seen in highly trained athletes, such as increased heart size and lower resting heart rate.
スポーツ心臓は、長期間の激しいトレーニングによる心臓の適応現象です。
Athlete's heart is an adaptive phenomenon of the heart resulting from long-term intense training.
健康診断でスポーツ心臓と診断されましたが、特に問題はないと言われました。
I was diagnosed with athlete's heart at my health checkup, but I was told it's not a problem.